Takumi/Ami Aiba

The protagonist, whose first name and gender can be set by the player. A member of "Enjoy Chat" and a user of EDEN, who, after being mysteriously given the "Digimon Capture" that allows them to scan and collect Digimon, gets attacked by an Eater and becomes a half-digital entity in the process. They're eventually found by Kyoko, who takes them into her service as her assistant so that they can recover their body and discover the secrets behind Eater and EDEN. They have the special ability to "jump" into digital fields and networks in order to travel between and into different areas that would normally be impossible for someone with a physical body, which is referred to in universe as a "Connection Jump".

Although in-game their personality is up to the player's interpretation as they're a Heroic Mime, reactions to their behavior, along with their sprites and dialogue choices, indicate them to be a friendly, outgoing, helpful, and sociable person.

The player is given the choice between Terriermon, Palmon, and Hagurumon as a starter, although ultimately they can have any Digimon available in the game. In the Master Cup, their Mirror Match counterpart uses the evolved forms of the three starters which they are commonly associated with: MegaGargomon, Rosemon and HiAndromon.

• All-Loving Hero: Their sole dialogue choice when confronted by Suedou about why they would want to save him after everything he did is simply that they don't want anyone to disappear, and indeed up until then they'd been stubbornly insisting on getting Yuuko and Arata out of Eater even despite their protests. There are also multiple points in the game where, after you're given fairly idealistic dialogue choices, other characters will respond that it's something they would say.
  • If a Digimon asks on DigiLine what they like, their response will simply be that they like so many things that they couldn't possibly list them all.
• Amateur Sleuth: Gets hired by Kyoko, a professional detective, to be her assistant despite having no experience or education in the field whatsoever. Granted, circumstances dictate that they're more like engaging in less-than-legal stuff on her behalf and aren't on the official record as working under her as long as their body is in the hospital, but that doesn't explain the large amount of miscellaneous requests they carry on her behalf (that she accepts money for!).
• Ambiguously Gay / Ambiguously Bi: The female protagonist, due to some writing mishaps in which lines blatantly written for the male character (such as hitting on girls in the story) are left untouched for the female. This effect goes both ways, as Arata still seems to want to make himself appear "mysterious and cool" for you if you are a male player too when you chose to play along with it.
• Apocalyptic Log: Played for laughs in Hacker's Memory, where a "Sleuth Memory" tells the tale of Kyoko preparing them coffee.
• Astral Projection: They become a half-digital entity after being attacked by a Eater and forcibly being separated from their body. They're still capable of manifesting in the real world and function more or less as they do normally, outside of their ability to Connection Jump into computer networks, but still seek to reunite with their physical body. Especially when it becomes apparent that being separated for too long will cause both bodies to deteriorate until they can reunite.
• Big Brother Instinct: There's an end-game quest where Aiba befriends a little girl, who they were supposed to be protecting from Digimon, who turned out to be her friends. When they took a longer-then-expected nap and missed their meet up time, they ran across a good chunk of Tokyo in just a few minutes to protect her from a violent Digimon.
• Bizarre Taste in Food: Drinking Kyoko's brews for so long has skewed their taste in coffee. They put mayo in their coffee in the epilogue. Which, given part of The Reveal about Kyoko's identity and Aiba's Back from the Dead status, may as well be Alphamon's "price" for doing so.
• Bunny-Ears Lawyer: An upbeat, cheerful teenager doesn't seem like they'd make an effective detective but their impeccable track record would say otherwise.
• Cast from Hit Points: Connect Jumping into Eater starts to take a toll on their body, to the point where it finally deteriorates from overusing it.
• Cessation of Existence: Aiba faces this if they don't get reunited with their body in time, since their cyber body is essentially an unstable mass of data being held together by sheer force of will. Kyoko outright states that their form is temporary and will eventually destabilize to the point of collapsing and dispersing completely, leaving only their comatose body which would eventually pass away from complications anyways. This ends up happening in the end, but thankfully the Power of Friendship allows Alphamon to build a copy of Aiba's data and re-install it into their physical body.
• Chekhov's Skill: Connect Jumping into Eater to save people trapped in it sure comes in helpful later.
• Chick Magnet: Downplayed as romance is not a focus of the game, but it's worthy to note that Aiba becomes close with a number of women during the story. Kyoko, Nokia, Yuuko, Mirei, Rina, Sayo and Date all become fond of them one way or another. Both Rie and Fei also flirt with them at some point. It even extends to Arata.
• Cloudcuckoolander: They have a surprising number of joke dialogue options, have a habit of zoning out and have a habit of breaking tension during serious moments. It's brought up in-universe how they don't seem all-together, but while Kyoko theorizes that this is because of their cyber body degenerating, they spend most of the game acting like this.
• Contemplate Our Navels: Around mid-to-late game, several characters will notice that the player tends to "space out" a lot. It's usually Played for Laughs, but dialogue from Pete and Kyoko imply that the spacing out is a sign that their cyber body is deteriorating and "glitching" out.
• Crazy Enough to Work: "Eaters are digital entities, so..."
• Crouching Moron, Hidden Badass: They can be rather goofy, jovial and sometimes come off as not being very bright, but they're still extremely competent at what they do. Able to match and defeat members of the Royal Knights one by one is certainty no easy feat.
• Cursed with Awesome: Sure, they're separated from a physical body, but it gives them the ability to jump into computers and travel through networks. Kyoko even considers it a blessing to her investigations. The "cursed" part only comes in as it becomes apparent that being half-digital makes them susceptible to network disturbances, and overusing Connection Jump will cause them to disintegrate entirely.
• Disappeared Dad: If a Digimon asks on DigiLine about their family, their response will be that it's only them and their mom, with no father mentioned. The localization translates one of Kyoko's lines as Aiba having "parents" (plural),^*Likely a mistranslation given the...hit-and-miss quality of the localization. but otherwise no father is ever brought up. The Digimon Story: Visual Artbook reveals that their mother Yukino divorced Aiba's father when they were at a very young age and that they've been estranged.
• Early-Installment Weirdness: Aiba can be either male or female, but the gender option is completely absent in the midquel with just male Keisuke.
• Energy Being: Their "half-cyber body" is essentially a tightly packed cluster of mental data shunted into the real world and somehow still manages to behave like physical matter.
• Even the Girls Want Her: Due to the above-mentioned writing mishap, this occurs if you play as the female protagonist.
• Even the Guys Want Him: Some of Arata's dialogue could be seen as him having an interest in Aiba too, regardless of which gender they are.
• Fashionable Asymmetry: Ami sports a sidetail offset to the left and seems to be tied down by her Digivice when it is not in use.
• Flat Character: To the point it's lampshaded by Nokia:
  "But the funny thing about you is you've got some pretty well-developed relationships considering how poorly developed your character is."
  • Despite Nokia's words, however, they actually Zig-Zag this trope thruoughout the story. As mentioned above, they tend to be rather hyperactive, and sometimes their dialogue goes in some rather....zany directions. They also have a love for food that almost rival's Yuko's, and they're shown to be an All-Loving Hero who tries to save as many people as possible.
• Forgotten Childhood Friend: They were friends with Arata, Nokia, Yuuko, and Yuugo during the EDEN beta test.
• Glass Cannon: Their half-cyber body is certainly kitted out with powers that offers the best of both worlds, but Kyoko and several others point out that Aiba is effectively a tightly packed cluster of data that is slowly but surely destabilizing over time. While not exactly as fragile as wet paper, physical exertion is definitely not recommended. Particularly stressful acts such as Connect Jumping into Eaters takes a severe toll on the body, leading to lasting instabilities. Near the end of the game, Aiba gets into a fistfight with Arata to snap him out of it after pulling him out of an Eater. The damage from the Connect Jump and the relatively light brawling was enough to cause them to glitch out for an instant and interrupt the fight.
• Goggles Do Something Unusual: They're Aiba's Digivice, which are used to manage their Digimon, access EDEN, and use DigiLine. The female protagonist also uses hers as a hair tie which in turn means she can't wear them the conventional way when holding her hair up. After being turned into a half-cyber entity, though, the utility of their Digivice is moot as it is now technically part of their body and they can access any of its functions by interfacing with the network directly.
• Hello, [Insert Name Here]: Aiba's first can be given by the player themself. Their Mirror Match will share the same name. Their surname Aiba remains unchanged.
• Heroic BSoD: They hit one after they recover their memories of the EDEN beta test, as they assimilate almost completely into the recreation and the dialogue choices indicates they've snapped, not helped by the fact that it is excruciatingly obvious how much pain they're in from their body's deterioration by then.
  ''If only it could have stayed like this...If only it could have stayed like this...
• Heroic Mime: An odd case; their dialogue isn't written out (although their sprites and other dialogue indicate they are indeed saying something unseen to the player), but their internal dialogue is laid bare for the player to see, revealing them to be a fairly upbeat and cheerful person. The contrast is somewhat jarring in-game. They do talk in battle, though.
• Hidden Depths: They really, really like food. Whenever there's an eating scene, Aiba will go into incredible depth describing how perfectly prepared the food is. Oftentimes, it serves as a Delicious Distraction, as they often zone out of conversations to think about food.
• Humanoid Abomination: Aiba's half-cyber body's "true" appearance is essentially a vaguely humanoid mass of translucent blue data. It's so disturbing to look at that it almost gets them arrested as soon as they manifest in the real world. Kyoko helps them escape and modify their form with a custom texture file so that they look normal enough to walk around in public without attracting undue attention. Late in the game, when their body is beginning to break down, they will periodically flash between their disguised form and the "data" form.
• Kid Hero: Aiba becomes a detective embroiled in a case involving a corrupt multinational conglomerate and a world-ending conspiracy while just being a high schooler.
• Liminal Being: Their "half-cyber body" is described as essentially a cluster of data that somehow retains a physical presence in the real world. More than one character muses that this makes them similar to the Digimon themselves. This unique state grants them several advantages otherwise impossible for others. Including the ability to separate an Eater from its host.
• Living on Borrowed Time: Aiba's half-cyber body was created in a freak accident involving a being that defies conventional physics. While their condition lets them function in both the physical and cyber worlds, their unnatural data form is inherently unstable and nobody understands how it functions enough to fix it. Early on, Aiba is told in no uncertain terms that unless they find a way to reunite their consciousness with their physical body, their new form eventually will collapse on itself and take them with it. No one knows exactly how long they have before total collapse, but it's implied to be due much sooner than later. Overuse of their powers, especially on Eaters, shortens their time limit dramatically.
• Magnetic Hero: Lampshaded by Nokia.
• Mirror Match: In the Master Cup, you can battle against your chosen character (who also shares the same name), who sends MegaGargomon, Rosemon and HiAndromon into battle.
• Missing Mom: Their mom, Yukino, is a reporter working overseas; the plan was for them to go visit her until the events of the game occurred. She keeps in touch over DigiLine throughout the game, but isn't present. Aiba's messages have them deliberately keeping their mother in the dark on the details of their activities and current situation to avoid worrying her.
• Morality Pet: For Alphamon. Stuck between their duty as a Royal Knight and doing what's right to protect both worlds they ask Aiba to guide their allegiance.
• Mythology Gag: The male default name matches how the anime leads would typically have names that started with the character "Ta", while the female's is in a more "standard" protagonist naming style.
• Nice Guy: Generally speaking, although you're capable of making some sly remarks once in a while via the dialogue options.
• Only Sane Man: They're a little goofy, but still easily the most normal and sane member of the main cast.
• OOC Is Serious Business: When they are not acting goofy, friendly, or sane, however, then you know something is very, very wrong.
  • When they discover that a man they were helping to meet a girl turns out to be a stalker trying to get the girl's personal information, they go ballistic, though still with a humorous Cloud Cuckoo Lander vibe. All the dialogue choices entail chewing said stalker out in a very non-friendly way and scaring them into submission, and one of the post confrontation choices even has them admit it feels good to "go off the hook" every once and a while.
  • Another time occurs at the end of the same mission where Arata reveals details about EDEN Syndrome, namely that there may not be a cure for it after all since it means that the victim's mental data was deleted from their minds. Given that they are a victim of EDEN Syndrome suffering an out of body experience, the news causes their facade to slip, just a little, as they consider the possibility that they may never return to their body, before pretending they didn't hear that part of the conversation.
  • Arguably, the biggest moment comes on the heels of the revelation about what happened in the EDEN Beta test. They break down completely and allow Crusadermon to assimilate them into the simulation, all while repeating a Madness Mantra about how they wished they all could have stayed in the beta test.
  • They also don't hold back on Suedou when they encounter him again after seeing what he'd done to the now Eater-fused and insane Arata. While we don't actually see what they say, their expression and Suedou's reaction makes it clear that their words for him are anything but polite.
• The Power of Friendship: It's said that they're able to accomplish much of what they do throughout the game through their bonds with their friends and their Digimon. Ultimately, this is what allows their Digimon to gather up their data and return them to their body.
• Purely Aesthetic Gender: The gender selection only changes their appearance and battle voice clips; other than that, it affects nothing, even scenes or dialogue choices that you'd normally expect to be made for the male protagonist. There are some small acknowledgements of their gender here and there; for instance, during a case where the player and Kyoko must figure out a fitting present for a girl, Kyoko will comment to a female player that she is too "worldly" to know what a girl actually wants.
• Screw Destiny: Mirei and Suedou both think their Connection Jump could alter fate.
• Signature Mon: All three Starter Mon as a whole count as Aiba's Signature Mons, which is further reinforced by their Mirror Match counterpart having all three of them. Other media like the manga also give them all three Starters at once. Notably, the Starter Digimon are the only ones that the main characters didn't meet in the past.
• Silent Snarker: Although they're a sort of Heroic Mime (see above), some of their facial expressions tend to fall into this category.
• The Snack Is More Interesting: When going out to eat, the sleuth is so absorbed in their meal they completely tune out everything around them. Nokia gets upset about this at one point.
• Running Gag: Being late. If the player is tasked with attending a meeting of some sort, they are almost always late to it.
• Schrödinger's Player Character: Whether you choose Takumi or Ami, the other will not appear in the story. Even in the Master Cup, your Mirror Match will be the same character you've chosen.
• Secretly Dying: Zig-Zagged. Kyoko and several others aware of their state know that it is only temporary and that eventually Aiba will collapse and disperse completely if they don't get back to their body. The "secret" part comes into play when it is obvious Aiba is not telling anyone just how bad their deterioration is getting; the reactions of their friends during the final fight when they almost disperse right in front of them while trying to Connect Jump makes it clear that none of them knew that Aiba was teetering on the brink of total collapse.
• Shouldn't We Be in School Right Now?: Aiba takes an indefinite leave from school for the duration of the plot. Their unique disembodied condition and need to investigate any possible leads on a potential cure for EDEN Syndrome would make it too impractical for them to attend school until both are resolved. Kyoko and her contacts with the police help them fabricate an excuse to avoid truancy or expulsion.
• Socially Awkward Hero: They're definitely...hyperactive for a protagonist. Along with their Cloudcuckoolander antics and...marginal attention span, several times they will also space out, often engaging in Inner Monologue and becoming distracted to the point that other characters take notice (most notably during the food tour the team takes). There's also the implication they have little sense of personal space or social awareness, at one point taking a comment Nokia makes regarding her "scent" to sniff her, much to Nokia's understandable bafflement, and some of their comments imply they feel more comfortable in online chats than in the real world, which, along with the incidents above, can point to Aiba possibly having A.D.H.D. or even Autism. While at least some of their behavior can be explained by their half-digital body breaking down over time, they still exhibited these traits even early in the game.
• Stepford Smiler: It is implied that they occasionally use their upbeat and All-Loving Hero attitude to hide how depressed they actually are over their admittedly serious condition; at one point, they have a conversation with Arata, and discover that, as far as the medical professionals can tell, EDEN Syndrome is permanent and there may not actually be a way to return to their body before they disperse. Their response is to "pretend [they] didn't hear that" and continue on. They still have moments where their facade slips, most notably when they fall into Crusadermon's Beta EDEN trap and learn the circumstances that brought the Eaters to the Digital World.
• Tomboyish Ponytail: The female protagonist has a sidetail to make her "cuter" and no matter how you play her she comes across as more active and "boyish" than most of the other girls in the game barring possibly Date, not helped by the as mentioned issues having the male and female dialogues largely the same.

Kyoko Kuremi

A detective specializing in cyber crimes, possessing a philosophical streak, a detective's natural curiosity, and quite a bit of knowledgeable intuition. Upon discovering Aiba in their half-digitized state, she recruits them as her assistant, offering to help them recover their body in exchange for them assisting her in detective jobs and an ongoing investigation into EDEN.

• Affectionate Nickname: She occasionally uses "my dear Watson" for Aiba, among other names.
• Benevolent Boss: She may tease Aiba constantly and expects a lot from them, but she ultimately cares deeply for her student and will put herself on the line with no hesitation to help them.
• Big Damn Heroes: Repeatedly. Most notably when she drives up and saves the player from being arrested when they materialize in the real world in their digital form. Then later when she drives straight into a digital shift to help the player fight Crusadermon as Alphamon.
• Body Surf: The "original" Kyoko was attacked and consumed by Eaters in EDEN, and as a result came down with EDEN Syndrome, leaving her body in a permanent coma without her mental data. When Alphamon made the jump into EDEN from the Digital World, they were severely weakened, and had to inhabit Kyoko's comatose body to prevent ending up like Omnimon, who ended up split between Gabumon and Agumon and inflicted with amnesia. By a sheer stroke of luck, Kyoko's and Alphamon's intentions and sense of justice were so similar that there was practically no rejection or data corruption, allowing the two to exist as one.
• Consummate Professional: Kyoko is very serious about her detective work. When she's on the job, she expects everyone to keep their heads in the game and see things through to the end. Early on, she makes it very clear that the services of her or her apprentice Aiba are only to be in the form of official paid cases as their time is too valuable to spent on things unrelated to their work. On one occasion where a case begins to veers from the digital entirely to the supernatural, she puts her foot down and ends her involvement on the spot. In her words, her office only works with cyber crimes and the case no longer fits those parameters, taking it out of her jurisdiction.
• Cool Car: Doubly so for being a V8 sports car in a country where compact vehicles are almost omnipresent, and it's apparently made out of Alphamon's armor. Perceptive players may notice that it's an Alphamon-colored Alfa Romeo Montreal.
• Cordon Bleugh Chef: Matayoshi warns Aiba during their first meeting to watch out for Kyoko's coffee, and he's not kidding; her "experiments" include putting in things like yogurt, sea urchin, oyster sauce, or mayonnaise. Aiba and Arata end up hapless victims. A journal entry in Hacker's Memory reveals that her coffee making process consists of cramming ingredients like fish eyes and bean paste into a blender and then dumping the resulting goop into the coffee. It suddenly makes more sense when it is revealed she is actually a Digimon with little to no concept of human cuisine, and becomes a Brick Joke, as Aiba ultimately takes mayonnaise and coffee with them when meeting up with Kyoko in the epilogue. As it turns out, Alphamon's the one responsible for this aspect; the real Kyoko is receptive to the idea, but finds it odd.
• Dynamic Entry: Using her Cool Car or more specifically, fusing with the Cool Car to save Aiba.
• Expy: Her physical appearance, demeanor, and motivation to find out what happened to her father seem to be heavily influenced by Kyoko Kirigiri.
• Infodump: Kyoko frequently goes on and on about various supernatural rumors, mythological legends, and monsters. Aiba's What Would X Do? moment has them ramble about the origin of Nues. Alphamon makes a point of giving one final Infodump as a way of saying goodbye as Kyoko.
• Innocent Bystander: When Suedou was trying to stop Kishibe from taking over Kamishiro Enterprises by deploying several eaters, Kyoko happens to be baited into Cyberspace EDEN by Kishibe when investigating the illegal activity per Kamishiro's request. This resulted in both women being indiscriminately attacked by the Eaters and inflicted by EDEN Syndrome, in which Alphamon takes the opportunity to take over Kyoko's body.
• "Just Joking" Justification: Near the end of the game, after reviving Aiba, she (as Alphamon) offers Aiba the choice between returning to the human world, or becoming a Digimon and staying in the Digital World as their partner. They follow up with saying that they just wanted to mess with Aiba one last time, but the sincere tone in Alphamon's voice while they make the offer gives off implications that it was serious, but Alphamon changed their mind after seeing how conflicted it was making poor Aiba.
• Leitmotif: "The Ending Has Lots of Coffee"
• The Mind Is a Plaything of the Body: The "Kyoko" that the cast interacts with over the course of the game, despite being an empty body inhabited by a Digimon, has a personality fusion of both entities: Kyoko's intelligence, curiosity, and intuition combined with Alphamon's odd taste in coffee and "regal", slightly masculine form of speech (although Alphamon does make sure to state that this was only possible because their intentions were already similar). After Alphamon leaves and the original Kyoko's is restored to her body, she seems to have residual, unconscious memories of the experience, as she asks Aiba if they've met before and says that she feels she's forgetting "something very important".
• Mission Control: Her detective agency in Nakano Broadway is the home base for Aiba's operations, and she's responsible for guiding them through detective requests and their investigative ventures.
• Ms. Fanservice: Though only in her character design; it's never commented on or pointed out in-game, other than the generic comment every so often about her being "beautiful".
• Navel-Deep Neckline: Her jacket has a plunging v-neckline that goes down to her midriff and she's clearly not wearing any top garment whatsoever under that jacket. (The actual 3D sprite closes it a little tighter.)
• OOC Is Serious Business: It is subtle, but one of the few times you ever see her genuinely taken aback by something is when Aiba offhandedly mentions the Digital World, at which point she all but demands to know where Aiba heard that term, this coming from someone who typically has the answers to a question before you even know what the question is. Given that she is Alphamon, one of the Digimon Royal Knights, and humans are not supposed to be aware of the Digital World at this point, her reaction makes sense.
• Sexy Mentor: She teaches Aiba the ins and outs of detective work and goes around town in hot pants and a top that exposes her cleavage down to her navel.
• The Stoic: Very little moves her from her general emotional state of "slightly amused".
• Visual Pun: In the form of her car. Alphamon drives an Alfa Romeo Montreal.
• Voluntary Shapeshifting: She can change from her human form of Kyoko and Digimon form as Alphamon at will. For convenience's sake, she spends most of her time in human form.
• Yōkai: She has an almost encyclopedic knowledge of them and Shinto folklore, and often makes comparisons of things they encounter to them.
• You Killed My Father: Her father is believed to have been murdered in the process of investigating Kamishiro Enterprises, and Matayoshi considers it to be a huge motivation for both of them to be finishing what he started. Although Kyoko certainly has respect for her father, she never mentions it herself, probably because her priorities are more invested in the fact she's actually a Digimon who wants to save humanity and the Digital World.
• We Help the Helpless: While Kyoko is very firm that her office handles computer and data-based cases, she's willing to stretch the definition so long as it involves the use of information technology at some point in the process. Once Digimon begin making themselves known in Material World, their nature as digital life forms mean that just about anything involving them falls under her office's umbrella by default.

Nokia Shiramine

An outspoken and positive-thinking girl whom Aiba and Arata had met through chat and met up in EDEN, who also receives the "Digimon Capture" from an unknown source. Although initially terrified of the Digimon, she meets and bonds with Agumon and Gabumon, partnering with them in the hopes of helping them get their memories back. Eventually, after slinking away from some fights, she decides to get over her cowardice, train with Agumon and Gabumon, and form a hacker team called the "Rebels" to fight for the well being of Digimon in EDEN.

Her partners are Agumon and Gabumon -> WarGreymon and MetalGarurumon -> Omnimon.

• Achievements in Ignorance:
  • During the story, Nokia ends up forming her own hacker group called the Rebels in order to protect the Digimon. Not long after she did, it somehow ends up becoming the second most powerful hacker group after Zaxon itself. They later end up as the most powerful one after Zaxon basically disbands following the Eater incident at Under Zero in the Valhalla server.
  • During a side quest she also succeeds in getting Agumon and Gabumon to Warp Digivolve into WarGreymon and MetalGarurumon respectively which makes her the only member of the main cast who's able to do so despite her inexperience. In a moment of desperation, she successfully commands her partners to DNA digivolve into Omnimon despite not knowing that her partners could even fuse together in the first place but did so through sheer stubbornness and dumb luck which Fei lampshades. Even Nokia herself is stunned that it somehow worked.
• All There in the Manual: Her background of her being a quiet kid as a child who later became more positive in life is not mentioned in the game, and it's later explained more detailed by Habu. Nokia used to be bullied due to her weak and feeble, but thanks to the influence of her cousin, Makiko Date, Nokia changed, not only in terms of personality, but also her fashion sense.
• Badass Arm-Fold: The game's Signature Scene has Nokia and Omnimon mimic the famous GunBuster pose.
• Breaking the Fourth Wall: She's fond of this, commenting on everyone's characters from time to time, although it's hard to say whether she's breaking the fourth wall or simply likes to use terms related to fiction (she at one point refers to her MP being at 0, despite no such concept existing in the game).
• Broken Pedestal: Up until he threatened her and tried to take Agumon and Gabumon away from her, Nokia was a fangirl of Jimiken (she'll still listen to his music, but he's a target of her hatred).
• Catchphrase: "Things will work out somehow!" She later upgrades it to "I'll make it work somehow!" near the end of the story where she's tasked with uniting the hackers in EDEN in order to help take down Leopardmon.
• Clingy Jealous Girl: Is this for Aiba as seen in the fact she gets jealous when she thinks there's another girl they're interested in, despite the fact she tries to earn every guy's attention.
• Converse with the Unconscious: The epilogue involves her, accompanied by the others, catching the comatose protagonist on what's happened since their defeat of Mother Eater, and begging for them to return.
• Cowardly Lion: Starts off this way at the beginning of the game prior to taking a huge, huge step out of it.
• Cuteness Overload: While she's initially terrified of Agumon and Gabumon as unknown monsters, the moment she calms down enough to get a good look at them, she starts fawning over how cute she thinks they are and immediately bonds with them as her new partners.
• The Ditz: The girl can barely survive in EDEN either by a combination of sheer good luck or The Power of Friendship. To make a point, when she forms the Rebels, it was very implausible for her to get into the Valhalla Server, but then Hacker's Memory revealed that her group only managed to get in there thanks to becoming friends with Chitose, who at the time was working solo and gladly used his skills for her benefit.
• Dude Magnet: Played for Laughs, quite a few of her Rebels are smitten with her.
• The Fashionista: It's not really brought up in the game, but according to Word of God, her flashy clothing style is the result of her experience from being bullied, but thanks to her cousin, Nokia changed to become more positive, starting with her appearance.
• Forgotten Childhood Friend: She was friends with Aiba, Arata, Yuuko, and Yuugo at the time of the EDEN beta test, or at least close enough with them for Yuugo to know her personality fairly well.
• Friend to All Living Things: Towards the Digimon. Bonding with both Agumon and Gabumon results in Nokia desiring to protect the Digimon and ensure that they can live happily with humans. In Chapter 18, this is likely what causes Kyoko to lend her Aiba's Digivice after they go missing as it's noted by the former that Aiba's Digimon trust her the most among their Tamer's human friends.
• Genki Girl: The most cheerful and outwardly excitable of the group.
• Girlish Pigtails: She's the most Girly Girl in the game by far and they also parallel her avatar's candy-wrapper shaped head.
• Hot-Blooded: Her impulsiveness gets her into a nasty habit of charging into events without really thinking them through.
• Idiot Hero: She's empathic and wants to help, but she's far from the sharpest tool in the shed and rarely gives her actions more than a second of thought before jumping into a situation.
• Just You, Me, and My GUARDS!: Attempts to pull this in the early parts of the game with Aiba in order to hide the fact that she's actually terrified and incapable of doing much. Agumon and Gabumon call her out on it twice.
• Leitmotif: "PO-SI-TIVE♡pop girl"
• The Load: Is this at first, to the point where she attempts to push any conflict onto Aiba in the early parts of the game. She gets better.
• Mons as Characterization: Tellingly, she has two partners compared to all the other non-protagonist main characters, both of which represent an aspect of her Character Development; Agumon, the patron Digimon of Courage, reflecting her growing bravery as she becomes more proactive and brave, and Gabumon, patron Digimon of Friendship, indicating her overall friendliness and magnetic personality. As Omnimon, a Royal Knight, and often considered the de facto face of the group, this reflects into her coming into her own role as a leader for her newfound Tamer group, the Rebels, set on maintaining harmony between human and Digimon relations.
• Ms. Fanservice: She's quite explicitly hopeful that guys around her will be into her "sexy-cute body". Interestingly, despite the fact that her character design bares a large amount of skin, it's mostly covered up in her 3D sprites, and other characters don't comment on what they think about it. Her body may be one of the reasons she even got people to join her hacker group.
• The Nicknamer: To a small extent; she immediately gets clingy to Yuuko and names her "Yuukorin" ("Yuukocchi" in the Japanese version) and eventually starts calling Arata "Geeta" (geek Arata).
• Olympus Mons: Her partner Digimon for most of the story is Omnimon, a Royal Knight and who is often depicted as one of the most powerful Digimon in the entire franchise.
• OOC Is Serious Business: She is almost constantly plucky, positive, and loud. So it says a lot when she collapses in the middle of the street and quietly breaks down when Aiba's over-stressed cyber body finally disperses during the transit back to the physical world.
• Please Wake Up: To the comatose protagonist at the end, begging them to wake up and help them locate Kyoko.
• Plucky Girl: Boy is she ever; her relentless positivity ends up being a draw factor for recruiting members into The Rebels, despite the fact that she doesn't have much hacker experience. Even during the latter half of the game, when faced with Arata succumbing to Eater and the Royal Knights looming even further, she briefly becomes a little dejected, but never fully succumbs to Heroic BSoD level. Aiba finally succumbing to data deterioration and evaporating in front of her just as they were about to come back home to push her into a BSOD, causing her to break down in the street when they return. She manages to recover within a few weeks, but it is obvious during her conversation with Aiba's physical but still comatose body that it still hurts and she just wants her friend back.
• Signature Mon: She's one of the few main characters to have multiple partners. Her Signature Mon is Omnimon, overall; it is the fusion of both of her partners after all. It's later revealed that Nokia first met Agumon and Gabumon in the Digital World many years ago, long before they became a Royal Knight.
• Small Name, Big Ego: She's convinced she has a "sexy-cute body" and expects every male in the vicinity to be into her self-proclaimed irresistible looks. Nobody in the game ever actually disagrees, though they do show a certain degree of exasperation, and at one point someone refers to a doll that looks uncannily like her as an "ugly one done as an experiment" that isn't selling well.
• Trademark Favorite Food: Anything having to do with eggs. When she, Arata, and the main character are sent as food critics, she always orders something with egg in it.
• Vitriolic Best Buds: She doesn't get on particularly good terms with Arata; she considers him pretentious, while he considers her idiotic. Deep down, though, it's clear they do care for each other deeply.
• What Measure Is a Non-Human?: After befriending Agumon and Gabumon and realizing that they're living beings rather than hacker programs, her motivation for the rest of the game becomes creating an environment where Digimon and humans can get along in peace, and hackers can stop treating their Digimon like slave programs.

Arata Sanada

An aloof boy who'd also met with Aiba and Nokia in chat and received the "Digimon Capture". He has considerable skill in hacking and seems to have been part of a big-time hacker group in the past, but refuses to mention anything about it. Throughout the game, he assists Aiba in investigating "Digital Shifts" that begin to half-digitize areas of Tokyo, expressing a particular curiosity in Eater and how to get Aiba back to their body. Despite his cold personality, there's a much softer and compassionate side underneath...not that he'll willingly let you see that.

His partner is Keramon -> Chrysalimon -> Infermon (and predictably Diaboromon if you complete a certain sidequest near the end of the game).

• Adaptational Heroism: His Digimon partner consists of the entire Keramon line, which were famously featured in Our War Game, a.k.a. the second part of Digimon: The Movie, as its Big Bad. Here, while it's fiercely loyal to Arata, it does not join his Face–Heel Turn and only digivolves into Diaboromon after Arata becomes good again.
• Ambiguously Bi: As mentioned under Even the Guys Want Him Arata tries pretty hard to impress Nokia and Aiba by making himself appear more "mysterious and cool", regardless of the latter's gender. Even if both of them are girls the way it's regaining his memories of Yuugo, who is said to have been his "closest friend" when they were kids, that leads to his breakdown can come across as questionable.
• Ax-Crazy: Shows some signs of this in Odaiba before the second Examon battle. He even has red eyes of madness!
  Arata: More, more, more... More, more, more, more and more!
• Blatant Lies: He walked into the "ComiMani" (comic maniacs) forum purely out of interest and thought it stood for something like "Communist Manufacturing", he swears!
• Butterfly of Transformation: Right before the last battle against him, he summons a screen with a butterfly pattern on it. When he walks through that screen, he transforms into Eater Adam.
• Closet Geek: Arata tries to play the role of a "cool hacker against authority", but he's actually a huge nerd and it shows through on several occasions, like when he's geeking out about manga and the player becoming a cyber sleuth. This leads to lots of teasing from Nokia and eventually Yuuko. The player can get in on it too sometimes. Get him to talk about comics and he'll start rambling on and on about them even after you ask him to stop.
• Cool Big Bro: Discussed Trope. Nokia notes that as BlueBox, he has the air of an older brother who looked out for both Nokia and Aiba.
• Dark Is Not Evil: Despite the fact that his partner's evolutionary line has generally appeared as antagonists in Digimon media, particularly in the anime, Arata himself is not a bad person in the slightest. When he goes off the deep end on his Face–Heel Turn, he doesn't even use his partner during that time, and after being brought back to normal his epiphany that he's developed into a better person is what triggers his partner's digivolution into Diaboromon - infamous for being the main antagonist in the second Digimon Adventure movie.
• Expy: Several players draw comparisons for Arata to Sasuke Uchiha. Especially later in the game when he goes with a mysterious Mad Scientist who promises him power in order to accomplish his goals and said "power" ends up giving him a Superpowered Evil Side and he ends up fighting his friends. Design-wise, he's a dead ringer for the protagonist of Devil Survivor 2.
• Face–Heel Turn: Briefly joins with Suedou and partially merges with Eater in the hopes of getting stronger after being reminded of his failure to save Yuugo, resulting in him going on a rampage around town and eating data. Although he doesn't completely become a heel initially as he still helps you defeat Examon, it culminates in him temporarily "eating" Gallantmon and eventually attacking you and your friends to make you "disappear". Eventually, Aiba snaps him out of it.
• Forgotten Childhood Friend: He was friends with Aiba, Nokia, Yuuko, and Yuugo during the EDEN beta test. The extent of his friendship with the others isn't fully clarified, but he refers to Yuugo as his best friend.
• The Gadfly: He enjoys being a bit of a troll to his friends, ranging from trying to scare an already clearly nervous Nokia when they first meet in person for the hell of it to giving you horrific romantic advice if you try asking him for some just to see how you'll react. Oddly enough though Nokia seems to indicate he doesn't actually do this often with his friends online as it comes up when she negatively compares him to how he handles himself as Blue Box.
• Get a Hold of Yourself, Man!: Aiba's response to him refusing to leave Eater is by punching him directly in the face. This causes Arata to angrily retaliate and for the two to enter a punching brawl...but his angry reaction indicates that He's Back!.
• Heroic BSoD: After his Eater form is defeated, he resigns himself to being weak and useless and unable to do anything, telling Aiba not to save him.
• Hidden Depths: Arata is a Sushi connoisseur, knowing several facts and even the order you're supposed to eat the different kinds in.
• Ineffectual Loner: Subverted. He acts like a cool loner, but he actually has a decently large circle of friends that he doesn't mind relying on. He becomes a straight example after absorbing Eaters.
• Insistent Terminology: He's a geek, not a nerd. And he's not a geek!
• It's All My Fault: Continually a victim of this; he blames himself for not getting you out of EDEN on time to prevent you losing your body, then for failing to trigger the Tokyo blackout on time to stop the dimensional gate from opening. His repeated failure to arrive on time to save Eater victims starts to take a toll on his self-confidence as the game progresses. By the time he's reminded of the second incident described in My Greatest Failure below, he does not take it well.
• I Work Alone: Tries to invoke this when he's about to get on the police's wanted list for causing the Tokyo blackout. Nokia calls him out for being cool, but Yuuko correctly identifies that he's trying not to get his friends in legal trouble by assuming responsibility for the crime. When Aiba meets up with him later, he admits that being on the lam really sucks, but still tries to keep up the act anyway.
• The Leader: Arata was the former leader of the Judes group of hackers until an attack after they raided Under Zero ended up destroying their accounts and driving some insane from fear. That being said, he gets the band back together for a last fight in Chapter 10.
• Leitmotif: "HACKING PRIDE".
• My Greatest Failure: Two. The first was leading Judes to Under Zero, resulting in everyone there being traumatized by the Knightmon there and the team's ultimate disbandment. The second, which gets him on a far deeper level, is hesitating to save Yuugo, his best friend, from Eater, then forgetting about the incident and Yuugo via Suedou-inflicted amnesia right after.
• One-Winged Angel: As Eater Adam.
• Red Eyes, Take Warning: He gets dark red eyes along with his Red Right Hand.
• Red Right Hand: Gives himself one by assimilating an Eater. Thanks to Suedou's preparations he maintains control over it, but the resulting Horror Hunger and deadening of his empathy cement him as a villain until it's dealt with. This eventually leads to his One-Winged Angel transformation.
• Shout-Out: He greatly resembles the protagonist of Devil Survivor 2 in terms of appearance.
• Signature Mon: The Keramon line, befitting his Playful Hacker personality. In a side quest, he asks Aiba to look for an additional partner for him. However, in the end, Arata changes his mind and he thinks that his freshly evolved Diaboromon is more than enough to carry him. It's also heavily implied that Arata first met his partner as a Kuramon many years ago.
• Tsundere: In spades. He has a tendency to react with embarrassment and denial anytime you uncover a softer side of his personality, which only spirals it down further.
• Vitriolic Best Buds: Nokia isn't fond of his cold attitude of "trying to act cool" and Arata isn't fond of her Hot-Blooded impulsiveness and occasional stupidity, so they tend to butt heads a lot, but ultimately they are friends and Arata seems to get legitimate fun out of teasing her.
• Would Hit a Girl: The scene in which he punches Aiba in the face takes place regardless of selected gender. To be fair to him, she did punch him first.

Yuuko Kamishiro

The polite and reserved daughter of Satoru Kamishiro, who had been president of EDEN's parent company Kamishiro Enterprises until his sudden and mysterious suicide. Believing that there's no way her father could have committed suicide, she enlists the help of you and Kyoko to help investigate. She also takes a personal interest in EDEN Syndrome, as someone close to her seems to be a victim of it. Her Digimon partner is a Gaiomon.

• Ambiguously Bi: In her introduction, Rie wonders aloud whether or not Yuuko might be hiding someone in the hospital ward, perhaps a boyfriend or even a girlfriend. Whether this is Rie's legitimate insight into Yuuko's preference or just Rie being Rie is unclear.
  • She does end up acting fairly Tsundere towards both the male and female protagonist, although that may have to do with certain writing-related mishaps (see Purely Aesthetic Gender above).
  • In Hacker's Memory, she ends up thinking for a long while what her exact relationship with Fei is, with her not being able to find the words but acknowledging that Fei is someone very important to her, to Fei's joy.
• Berserk Button: Anything relevant to her father's death - her reaction to Kyoko mentioning his suicide is yelling firmly that her father would not commit suicide, and after Crusadermon is revealed as his murderer, the mere subject sends her into Tranquil Fury.
• Becoming the Mask: She wears multiple personas to the deal with the people in her life and swaps them as needed to serve her goals. She's done this for so long that her greatest fear that she no longer has an identity of her own. Part of why she lashes out at her friends in the late game is because of this lingering anxiety that none of them could care for the "real" her when she doesn't even know who she is.
• Big Eater: She's often caught hanging around restaurants checking out some large food deal, and a sidequest reveals she can eat portions for multiple people and still be hungry. She also happens to be an online hobby food reviewer in her free time. Also, when asked about what her ideal romantic gift would be: it's "a huge onigiri filled with love".
• Broken Bird: The poor girl already has it rough from the beginning of the game: her twin brother is comatose, her father has mysteriously died (and is accused of committing suicide), and her family company is slowly falling into the hands of a power hungry corporate executive officer; there is no mention of her mother, and thus other immediate family. She firmly enters this status after the events regarding the Mother Eater.
• Cute and Psycho: After apologizing for saying cruel things to Aiba when out for revenge on Crusadermon, she puts on this demeanor when insisting that they forget about it, leading to them labeling her "Yuuko the Blackhearted".
• A Darker Me: After learning that Crusadermon killed her father, she noticeably takes on a few more cold and biting/sarcastic traits at certain moments, which the others jokingly refer to as "Yuuko the Blackhearted". Kyoko notes that she's been putting on so many different kinds of "masks" (the president's daughter, the leader of a team of hackers, a shy and lonely girl) that she's starting to display other unprecedented sides to her personality.
• Despair Event Horizon: Crosses it after being assimilated into the Mother Eater. By that point, in order, she's learned that all of her work as Yuugo was manipulated by Rie for her own selfish gains; that she, Yuuko, contributed to the many Eden Syndrome victims that resulted from the Under Zero operation. Furthermore, Rie has officially taken over her father's company, perverting the one familial tie Yuuko had to her practically nonexistent family. This also strips her of what little company power she had as a minor. The fact that Rie threatens Yuugo's safety while he's comatose only makes it worse. Following that, Rie painfully extracts her memories necessary to bring the Royal Knights to earth and begin the Digimon invasion. And following that she's forcibly assimilated into an Eater, that painfully feeds on her emotional state and body while her friends take care not to injure her in her monstrous form during battle. By the time Aiba is able to rescue her, she's completely given up hope of anything actually going her way.
• Expy: Visually, she resembles Yuuya, having similar fashion sense and also being the child of a major corporation's leader. That's where the similarities stop, though.
• False Flag Operation: Uses the detective agency as a patsy and a fake name so she can investigate the account raiders attacking EDEN without being identified by her ties to the Kamishiro Corporation or her secret identity as the head of Zaxon.
• Forgotten Childhood Friend: She and her brother were friends with Aiba, Nokia, and Arata during the EDEN beta test.
• Friendless Background: She has poor social skills and little experience in having friends, as when told to act like Aiba is her school friend she believes that this means she has to act like a Tsundere towards you. She also has a poor grasp on what it means to be a friend, and it takes a while before she acknowledges you as one. It seems that she'd been friends with Aiba, Nokia, and Arata as kids, although to what extent is unknown, and her memories of them were wiped after the EDEN beta test incident.
• Heroic BSoD: After discovering that Rie had been manipulating her actions every time she'd been acting as "Yuugo", she falls into despair and tells Aiba to give up on rescuing her because everything she'd done had been for nothing. Aiba and Fei's TigerVespamon have to remind her that she's not alone in order for her to recover from it.
• Leitmotif: "MESSAGE", which notably isn't named after her but the significant yet unrelated event it's used in (Nokia's message to the comatose protagonist in the epilogue).
• Not So Stoic: At any mention of her father's death if it's anything related to suicide.
  • On a more humorous level, talking about food makes her a lot more open and happy than she would be ordinarily.
• Ojou: Played with; although she's the daughter of the former Kamishiro Enterprises president and is able to use her connections to get Aiba and Kyoko in when they need to do investigations, she's not of age and is thus given few access privileges while Rie is the company head. She does take control of leading the company when Rie's disappearance causes it to go into disarray, though it's not said whether this is an official position. It's also implied she has quite a bit of money; when she submits a request as "Yuugo", Kyoko mentions that "he" paid it off right away and comments that "he" must be of good upbringing, and later when Nokia runs out of money to help supply Agumon and Gabumon's massive appetites, she foots the entire bill for everyone present and takes them all out for dessert.
• Parental Abandonment: What happened to her mother is never mentioned or explained, but her father's death and her brother falling into EDEN Syndrome is said to have left her with no family. Although Satoru is restored to life after the Cosmic Retcon, the epilogue also has Nokia comment that with Rie making moves on Yuuko's father, she may very well end up becoming Yuuko's new mother, meaning that Satoru indeed does not have a currently living wife.
• Revenge: Alphamon's original plan is just to finish dealing with Crusadermon for the time being and leave, but Yuuko wants revenge for her father's death. She gets it.
• Shrinking Violet: She's aloof and fairly shy. It's for this reason that the "Yuugo" avatar comes with an artificial personality, as she wouldn't have been able to lead Zaxon with her own demure disposition. She does, however, have the capacity for some well-timed cold remarks, which Aiba and Nokia jokingly refer to as "Yuuko the Blackhearted".
• Signature Mon: RizeGreymon/Gaiomon, who chooses to stay loyal to Yuuko, while Machinedramon's loyalty lies with "Yuugo". It's also heavily implied that Yuuko met her partner as a Botamon many years ago.
• Take a Third Option: Upon visiting Fei and Keisuke at the Central Hospital, her and Fei's relationship is called into question by Keisuke. When asked by the two to clarify what she views the relationship as, she opts to neither confirm it as platonic or romantic, instead simply saying how Fei is "precious" to her and that their relationship is something that cannot be put into words.
• Terse Talker: At the beginning of the game. She would rarely say more than she'd need to; while she opens up as the story continues, she still remains the quietest of the main cast. This even extends to both her partner Digimon, Machinedramon and Gaiomon respectively.
• Tranquil Fury: She becomes very cold and passive-aggressive to you as you accompany her after discovering that Crusadermon was responsible for her father's death; although she never gets to the point of violent anger, she gets extremely frustrated with you for supposedly taking the situation too lightly and even denies that you're her friend. She apologizes for it later.
• Tsundere: After you save her from Eater, Nokia comments that she was very worried about you during your absence...to which she stammers and protests that it's not like that and she just wanted to thank you.

Mirei Mikagura

A character originally hailing from Digimon World Re:Digitize who's friends with Kyoko, manages the DigiLab where Aiba and Keisuke can manage their Digimon, and occasionally provides assistance in their hacking endeavors. She carries a mysterious demeanor and is a firm believer in "fate", describing her own presence as being a product of that.

Her partners are Angewomon and LadyDevimon -> Mastemon.

• All There in the Manual: A game-shaped manual in this case; her general nature is left unexplained in this game, and understanding it fully requires playing Digimon World Re:Digitize Decode (a game that, despite being in the same franchise, is technically part of a separate series) to the end. The website for this game gives a few details at the cost of spoiling the other.
• Cordon Bleugh Chef: She's responsible for suggesting strange coffee recipes to Kyoko, although knowing her personality she could easily just be taking amusement from the results.
• Dimensional Traveler: She's not from this world and has connections to multiple others. Mastemon also has the ability to create dimensional portals, although since creating her requires items that she doesn't have at the start of the game, how much access she has to this ability is unknown.
• Expy: She's a mysterious and elusive manager of a hidden, extradimensional monster management room, much like Elizabeth; she even has the same voice actress with the same vocal pitch.
• Fusion Dance: The scene in which Angewomon and LadyDevimon DNA Digivolve into Mastemon is...quite something.
• Late-Arrival Spoiler: Her official profile on the game's Japanese website spoils the final plot twist in Digimon World Re:Digitize Decode, in that she lost her physical body in an accident.
• Older Than They Look: Her chest might give it away, but according to her game of origin, she's actually an adult woman.
• Optional Boss: Both as one of the enemies in the Offline Colosseum and the final challenge in the Demon Lords DLC as she goes off the wall attempting to make the "ultimate Digimon" from the Seven Sins pieces.
• The Tease: She comes off as this, partially due to her voice actress playing up this aspect of her in her performance, partially due to her tendency to use language like "fate drew me to you". (She likes using this language on other people as well, as she refers to Aiba similarly as Sayo's "fated person" in reference to them being the one to save her Dianamon.)

Rina Shinomiya

A girl who hails from Digimon World Re:Digitize Decode and its corresponding Alternate Universe. Mirei sends Aiba to meet her in order to recruit her Veevee as the Royal Knight UlforceVeedramon. An incredibly aggressive and tomboyish girl, she's described as annoying, oh so very annoying...and cute.

Her partner is Veevee, a Veemon -> UlforceVeedramon.

• Astral Projection: Apparently being outside her own world leaves your physical body in your world of origin and makes you into a digital entity. Rina takes an alarmingly low amount of concern about this and in fact finds it cool to be "like a Digimon".
• Big Eater: She considers food to be one of the most important things in the world, and her introduction of the human world to Kentaurosmon ends up being endlessly dragging him to restaurants.
• Boisterous Bruiser: She's incredibly fun-loving and her first reaction upon entering Aiba's world is deciding that she wants to tour around the town. Her free-spirited nature is eventually what convinces Kentaurosmon to back down and give humanity a chance.
• Calling Your Attacks: She and Veevee like to call his finisher together...except she keeps getting it wrong, like saying "Spray of History" for "Ray of Victory"^note "in Japanese, Oyster V-Sauce" for "Shining V-Force".
• Cloudcuckoolander: Pretty much the basis of her entire character in-game, to the point where absolutely no one can keep up with her randomness. Not even a Royal Knight.
• Combat Pragmatist: She waits for an evil lord digimon to start his villainous gloating before drop kicking him in the face.
• Did You Just Punch Out Cthulhu?: In an action that would make Masaru Daimon proud, she kicks the Demon Lord Barbamon in the face.
• Dumb Muscle: She's incredibly physical and impulsive but also incredibly absent-minded, charging into situations regardless of consequence and shrugging off half the things she's told because she doesn't understand enough to care.
• Flanderization: In her game of origin, she was a bit of a goofy Genki Girl but was otherwise reasonably sensible and took the situation seriously enough (even chastising another character for being reckless). Here though, the Genki Girl aspect of her character is turned up to 11 and the common sense she displayed in her home game is nowhere to be found.
• Genki Girl: So much that her "idle" animation isn't idle as much as her jumping around ready to start a physical brawl.
• Goggles Do Nothing: Nothing that we see, but in series it's a good and reliable visual shorthand for "Digimon protagonist".
• Large Ham: Likes to overdramaticize everything she talks about (mostly to Veevee's exasperation). Culminates in her and Veevee giving each other a dramatic, tearful farewell as they promise to meet again (despite the fact that they're only going to be temporarily separated)...only for her to follow you through the gate anyway.
• Like Brother and Sister: She and Veevee have this kind of relationship, with a hint of Foolish Sibling, Responsible Sibling, with Rina as foolish one and Veevee as the responsible one.
• Motor Mouth: Rina's boundless energy means she can talk a mile a minute and does so most of the time.
• Optional Boss: Near the end of the game, she and Veevee are the first bosses in a series of quests that unlock the ability for you to make your own versions of UlforceVeedramon and the other Royal Knights.
• Vague Age: In her game of origin, she was depicted as what would be the age of a middle school student at the oldest, but in this game she's depicted to be around the same age as the mid-to-late teenager cast. This could also be a stylistic difference; despite the fact both games were by the same artist, Mirei, who shouldn't look older because she has no physical body, also goes through the same treatment.
• Whatever Happened to the Mouse?: After her side quest towards the end of the game we never see her again. She doesn't join you for the final battle and she isn't mentioned in the epilogue.

Pete

A Wanyamon discovered within Nakano Broadway in an early sidequest, who seems to be the manifestation of a "time capsule" left in an old vacuum tube computer in Nakano Broadway. Or, at least, it's only Kyoko's theory; he's actually the cat of a man named Yoshito Mizushima who used to work in the computer room, and was trapped there when the room was sealed off; the power of the Digital Wave within it caused him to merge with the computer and become a Digimon. He becomes a helpful assistant in a few sidequests.

• Amnesiac Dissonance: Although there's no moral alignment associated with it, the trauma and confusion of his conflicting identities of "Pete", named and given an identity by Kyoko, and "Miko", named and given an identity by a man named Yoshito Mizushima, is enough to almost give him a mental breakdown.
• Dead All Along: Possibly implied; Kyoko notes a number of strange things that don't line up with logic when he and Yoshito reunite...but ultimately Aiba chooses not to pursue it at Pete's request.
• Fish out of Temporal Water: Because he's a time capsule (or, actually, because Yoshito told him), he's aware of and talks about quite a few (in-universe) pop culture references that nobody around him recognizes.
• Identity Amnesia: He doesn't remember anything about himself or who he is, and he assists Kyoko because she takes an interest in discovering it.
• I Just Want to Be Normal: Once he remembers who he is, his final request to the player is to leave him and Yoshito alone- he does not wish to be found and would rather spend his remaining days with Yoshito as a normal cat: Miko. Thus, they are never again seen nor mentioned in the game.
  Pete: Please, leave us be... Don't go looking for us.
• Mission Control: Takes this role during Kyoko's absence in chapters 12-15.
• Peaceful in Death: Heavily implied at the end of "Ghost Cat Building": the final cutscene is of Yoshito and Miko leaving together. But what makes the implication stronger is that, rather than walking on the building, they seem to be walking on the screen instead- giving the illusion that either Yoshito or Miko, or perhaps both, will die soon- and happily together. Kyoko's monologue at the end of this quest can be taken as a kind of eulogy.
  Kyoko: Not all mysteries in this world need to be solved.
• Time Capsule: He's the personification of a time capsule filled with data from a few decades past, stored in an unused computer system within Nakano Broadway. Or at least, that's what Kyoko initially believes.
• Uplifted Animal: It's theorized that Pete/Miko was a cat that was caught in the wall with the vacuum tube computer that was affected by Digital Waves and became a Digimon.

Goro Matayoshi

A senior detective known in his department for being a bit of a Determinator with an obsession around discovering the truth, and a friend of Kyoko's late father who's known Kyoko since her childhood. He's rather inexperienced with modern technology, so he often drops by the detective agency for advice and considers it his "secret weapon". Due to his past experience with it, he provides valuable information in the Kamishiro Enterprises investigation.

• Affectionate Nickname: He calls Kyoko "Kyo-chan" despite her being a grown woman, saying that because he's known her for so long, Kyo-chan will always be Kyo-chan to him.
• Cool Old Guy: Though stern, he gets along well with much of the cast. He's particularly interested in Aiba and watching their development as an Amateur Sleuth, since they're Kyoko's protegé.
• I'll Pretend I Didn't Hear That: Is prone to saying he heard nothing when you mention using methods that skirt the edge of legality.
• It's Personal: Kyoko's father is his Dead Partner, and he wants to take down Kamishiro to avenge him
• Locked Out of the Loop: Although he's aware of the fact Aiba and their friends are trying to stop an oncoming world destruction plot, since he doesn't have a full grasp on the situation, he ends up having to leave it to them while he tries to explain their actions to the higher-ups.
• Manly Tears: Telling Aiba about Kyoko's father's death leaves him hiding his tears, though Kyoko noticed when he left.
• Reasonable Authority Figure: Although "reasonable" might be a little stretched since he technically assists the main cast in their questionably legal hacking actions. He does, however, try his best to protect Arata when the police department attempts to scapegoat Arata and the other hackers for the incidents around Tokyo.
  • According to Date, who is a former delinquent herself, Matayoshi is the only on in the police department who is open to hearing out street delinquents instead of straight up arresting them. This wins over Date's Undying Loyalty, and once she turns a new leaf and leaves her old life, she decides to become a police officer.
• Red Oni, Blue Oni: Matayoshi is a Cool Old Guy, Reasonable Authority Figure, and much more experienced Blue Oni compared to Date's hot-blooded, more aggressive, and easily angered Red Oni.

Makiko Date

A detective who works under Matayoshi, who seems to know a thing or two about Arata's past as a hacker. Although her aggressive and abrasive attitude causes her to initially have a bad opinion of Aiba and the detective agency, she eventually forms a good relationship with them.

• All There in the Manual: According to Habu, Date and Nokia are cousins, and it's thanks to Date that Nokia is the way she are (in looks and personality).
• Cuteness Overload:
  • Towards a lost Lopmon looking for their friend Tokomon she comes across and brings to Aiba as a client.
  • Hacker's Memory has her at one point subjecting Keisuke, who was at the time disguised as a Poyomon, to a Marshmallow Hell until she's reminded that she should be working and give Yu back his "Digimon".
• Defrosting the Ice Queen: She starts off considering Kyoko's agency - and Aiba by extension - suspicious, and even until late in the game has a habit of threatening to arrest them, but builds a far better relationship with them afterwards (while still threatening to arrest them).
• Disproportionate Retribution: Played for laughs. Every time you meet her she'll threaten to arrest you for some reason or other, like being depressed when Kyoko goes missing later in the game.
• Establishing Character Moment: Threatening to arrest people for making a scene around Aiba after having their damaged digital avatar shunted into the real world by an Eater, then threatening to arrest someone for calling her an "officer" when she's actually a detective, Then threatening to arrest the player character for "being gross".^*Granted, Aiba at the time was a mass of translucent blue data in a vaguely humanoid form sitting in the middle of the street, which one could easily find disturbing, but still.
• Foil: To Kyoko. Though they share a vocation, the two female detectives couldn't be any more different from their appearances to their general attitudes.
• Hair-Raising Hare: A Lopmon that she ends up assisting eventually becomes an Antylamon that serves as her partner in Hacker's Memory.
• Hair-Trigger Temper: Date is very aggressive and easily angered on a whim. She also threatens to arrest everyone on even the smallest offenses possible.
• Has a Type: When taken along on cases in Hacker's Memory this topic may come up, and as it turns out it's "strong, dependable, and always remembers what others have done for them" or, as others occasionally point out, Ryuji.
• Japanese Delinquents: She talks like one, despite being a law-enforcing detective. Turns out she's a former delinquent herself.
• Jerk with a Heart of Gold: She's aggressive and quick to say rude things, but she does have everyone's best interests at heart, and particularly idolizes Matayoshi. She also at one point grudgingly admits that a Lopmon is "cute". She's also capable of holding quite civil and occasionally even cheerful conversation with Aiba over DigiLine (although most of them happen to involve Matayoshi, who's her effective soft spot).
• Liquid Courage: According to Matayoshi in Hacker's Memory, she's even more difficult to stop when drunk.
• Red Oni, Blue Oni: Date is the hot-blooded, more aggressive, and easily angered Red Oni compared to Matayoshi's Cool Old Guy, Reasonable Authority Figure, and much more experienced Blue Oni.
• Tsundere: She's either nice or aggressive, with essentially no middle point.
• Undying Loyalty: To Matayoshi; she's constantly concerned about his welfare, and at one point she suggests she'll have to be the one to take care of him if he quits the police force.
• Wacky Marriage Proposal: Toward the end of Hacker's Memory she demands that Ryuji return safely so she can arrest him for life. Chitose is quick to point out that that sounded like the weirdest proposal ever.
• You Remind Me of X: Matayoshi is particularly fond of her as his junior, since she reminds him of himself when he was a younger detective and believes she'll grow into a great one.

Ryouta Takei and Sakura Fujisaki

Two of Aiba's classmates. Ryota has a less-than-subtle crush on Sakura, whose love for the singer Jimmy KEN's music has lately caused her to become worringly absent-minded.

• Cloudcuckoolander: Sakura comes off this way, although Ryouta notes that she's been like this ever since she became obsessed with Jimmy KEN, and indeed her DigiLine messages are far more coherent than her speech.
• Declaration of Protection: Kyoko forces one from Ryouta when questioning him how he likes Sakura in what way.
• Match Maker Quest: After Sakura is saved from the Jimiken hypnosis incident and lands in the hospital, Aiba ends up helping Ryota pick out a present for Sakura that, with progressively decreasing levels of subtlety, is eventually revealed to be something he hopes to ask her out with. In addition, you can try egging on their relationship through DigiLine responses. A late-game DigiLine message reveals that they've started dating, although it's not mentioned whether this applies after the ending's Cosmic Retcon. Hacker's Memory throws in further confusion by revealing that Sakura later dumped Ryota before the timeline got reset.
• Those Two Guys: They ultimately are for comedic and light-hearted value; the most they factor into the plot is Sakura becoming one of the Jimiken hypnosis victims, and afterwards their tale is told only in a sidequest.

The Inoden Occult Research Club

A high school occult club that requests Kyoko's help in investigating an urban legend, and occasionally factors into a few sidequests. They're led by Mei, who has a boundless sense of enthusiasm for the occult. Four members (Mei, Kenji, Manaka, and Lily) are seen throughout the course of the story.

• Beneath the Mask: One case with Manaka involves her DigiLine account being hacked and sending messages that she didn't write. What's unusual about it is that the messages do, in fact, reflect her actual feelings - her true feelings, as in the kind that wouldn't be socially acceptable to let public.
• Guest-Star Party Member: In Hacker's Memory, after Digimon invade Tokyo, Lily's unseen familiar becomes a Kyubimon that aids the player and later Digivolves into Taomon in her side quest.
• The Eeyore: Not as drastic, but Lily is usually the one who thinks the club is into silly urban legends that aren't true and wish they could do something else instead. Then comes The Reveal that she's an actual professional exorcist and tries to steer her friends away from danger.
• Maid Café: Lily runs a part-time job in one, and thus is always seen in a maid outfit.
• Maybe Magic, Maybe Mundane:
  • Although the other cases turn out to have mundane (or at least mundane by in-universe logic) explanations, the case of Shibuya Hirasaka most notably does not, and it's left ambiguous whether the girl involved is an actual dead, vengeful spirit. Kyoko drops it under the justification that her jurisdiction lies in cyber crimes, and not in the occult.
  • The Shibuya Hirasaka case is expanded on in Hacker's Memory, as well as the group as a whole. Lily is in fact an exorcist, and whenever she's trying to derail the group's investigations it's because they're legitimately dangerous. The Shibuya Hirasaka case ended with the group accidentally linking the worlds of the living and the dead, and after the brief connection to the Digital World the girl's vengeful spirit fused with a Dragomon, not entirely unlike the cat that became Pete, and sought to use its power to take advantage of the linked worlds to flood Shibuya with undead. After stopping this and exorcising the spirit, the group pushes Lily into training them all to be exorcists in order to help lighten her work load, and to be able to defend themselves if their meddling ever steps into the legitimately supernatural once more.
• Shipper on Deck: Lily, for Manaka and Kenji.
• Workaholic: Lily has barely enough time to work at a Maid Café and juggle her apparent hobby as part of the research club. On top of this, she's a superb exorcist.

Reiko Tawa

A worker at the Shibuya Records store, who sends Aiba a request to deal with a mysterious CD appearing around the store. She eventually bonds with the culprit, an Etemon whom she happens to like the eccentric music of.

• Birds of a Feather: Her awful singing may explain why she was appreciative of Etemon's early music for its... "unique" sound.
• Crossover: On a meta-level, she's the Tower Records Japan mascot in real life.
• Dreadful Musician: Her singing is enough to make everyone in the area cringe.
• Meaningful Name: "Tawa Reiko" = "Tower Records".
• Product Placement: She's basically a walking advertisement for Tower Records in the game; she even promotes it in her lines. The localization ends up turning it into a Lawyer-Friendly Cameo by making it "Shibuya Records". (The only other reason she's in the game is a reference to the fact she's designed by Suzuhito Yasuda, the character designer for this game.)

Sayo

A girl who appears only in the Demon Lords DLC and originates from the Digimon World Dawn/Dusk pair of games; she identifies herself as a "Tamer" from Darkmoon City, in an Alternate Universe. Mirei introduces Aiba to her in order to help her recover her partner Dianamon, which can only be done through the defeat of the Seven Great Demon Lords.

• But Now I Must Go: She returns to her own world after Aiba rescues her Dianamon, though she promises that they'll meet again.
• Cutting Off the Branches: She's referred to officially as a member of the Night Claw organization, making her the protagonist of Digimon World Dusk or the rival in Digimon World Dawn and her male counterpart Koh a member of said game's Light Fang organization.
• Downloadable Content: Her missions. She serves no purpose to the main story and after she appears she will stay in the Digi Lab until you complete all of her cases. None of the other main characters except Mirei and the player interact with her in any other way.
• Gameplay and Story Segregation: The game states that Sayo defeated all Seven Great Demon Lords previously with her Dianamon, prompting the events of her quest. Dianamon, however, is a Data type Digimon with low defenses. In standard play, if it were to go up against any of the 7, it would most likely lose if not struggle greatly due to the disadvantage. Additionally, none of Sayo's other Digimon that she regularly used alongside Dianamon in Digimon World Dawn are mentioned or present.^*Her other two Digimon being a MachGaogamon that Digivolves into MirageGaogamon and is capable of entering Burst Mode, and a Lilamon that Digivolves into Lotosmon.
• Goggles Do Nothing: Other than signify, like most other Digimon media, that she is/was a protagonist in some way or form. In this case the protagonist of "Digimon World Dawn/Dusk".
• Guest-Star Party Member: After you help her get Dianamon back, she assists you in fighting Mirei.
• I Work Alone: She initially refuses Aiba's help on account of her "pride as a Tamer", but Mirei reminds her that there's literally nothing she can do; she can't fight the Demon Lords without Dianamon, but she can't get Dianamon back without fighting the Demon Lords. After grudgingly accepting help, she eventually warms up to Aiba as they display their strength.
• Nice Job Breaking It, Hero!: Her defeat of the Seven Great Demon Lords caused their power to disperse to other Alternate Universes, and the resulting "sin" caused her Dianamon to disappear. Thus, the only way to get Dianamon back is for Aiba to defeat the Demon Lords in their own world. Of course, this leads right to Aiba committing the same "sin", but thanks to Mirei's meddling, they end up not having to lose their own partners.
• Previous Player-Character Cameo: She was the lead of the previous Digimon Story game.
• Tsundere: Although her initial reaction to Aiba is legitimate disapproval of them having to rescue her, before she warms up to them completely her reactions to them taking out Demon Lords one by one are all along the lines of "...not bad".

Eater

Click ^here to see the Humanoid form

Click ^here to see Eater Eve

Click ^here to see Eater Adam

Click ^here to see Eater Legion

Click ^here to see Mother Eater

Click ^here to see Eater EDEN

The main antagonist of both Cyber Sleuth games, Eater is less of an "antagonist" and more of a malevolent entity that has no real will and corrodes all data it touches. Its physical contact with Aiba causes them to become a half-digitized entity, it mutates real-world areas into "Digital Shifts", and eats the "mental data" of any human it comes into contact with, throwing them into EDEN Syndrome. It also has the ability to use the data it "eats" to "evolve", taking on new forms accordingly.

• Achilles' Heel: In the earlier chapters, Purebreed Eaters have notoriously low HP. Thus, they're very easy to OHKO with fixed damage attacks such as Gatomon's Lightning Paw or Devimon's Death Claw, turning a potentially difficult encounter into a joke.
• The Assimilator: It doesn't directly copy the abilities or attacks of what it absorbs, but it takes on forms similar to it and becomes more powerful.
• Battle Theme Music: The rank and file Eaters are always accompanied by the utterly unsettling "Something Eroding" theme when fought.
• Big Bad: Partially so; because it has no intelligent will, most of its actions are chaotic/random or being controlled by someone else, but it's the effective cause of everything that happens in the game.
• Digital Abomination: The Eaters are mysterious entities from the Digital World driven only to consume data. They all have a glitched-looking Unmoving Plaid texture. The weakest ones resemble molluscs, while stronger ones resemble humans and the strongest ones can only be described as looking alien. In Hacker's Memory, they manage to absorb the core of the cyberspace Eden, turning the whole cyberspace into an Eldritch Location with paths resembling an M. C. Escher painting and with everything having the same Unmoving Plaid texture.
• Eldritch Abomination: Its Purebreed form resembles some kind of otherworldly squid, and its other forms are rife with moving parts that shouldn't be moving in that way.
• Expy: Of the D-Reaper from Digimon Tamers, as it's a non-human, non-Digimon Eldritch Abomination that has a corrosive nature that is eventually defeated by reverting it to a more harmless form. Unlike the D-Reaper, however, it has no real will.
• Forced Transformation: Their real (and presumably far more harmless) form is a glowing ball of light. It seems that contact with the human world is what twisted them so much.
• Hive Mind: All the Eaters are connected via one network tied to the core, which Yuugo exploits to communicate and is ultimately using to keep it from rampaging even further.
• Horror Hunger: All they want to do is consume data, preferably humans.
• Humanoid Abomination: Humanoid Eaters have consumed enough human data to understand what they are to attempt imitation, but don't quite grasp what humans actually look like, resulting in shambling humanoid facsimiles barely held together by their core that would only be mistaken for people from a distance.
• Light Is Not Good: They are actually transmitter waves coming from a higher plane of existence, and their true uncontaminated form resemble orbs of light. Many of their more advanced attacks are also light-related, such as laser beams or energy balls. In particular, the Eater EDEN's strongest attack that it unleashes after a countdown is literally named "Ain Soph Aur".
• Load-Bearing Boss: If an Eater is causing a Digital Shift, defeating it causes the area to go back to normal. It also works temporally; if you completely destroy Eater via its core, it will become as if Eater never existed.
• More than Three Dimensions: Suedou and Alphamon eventually speculate that it may have come from a "higher dimension", although its true nature remains unknown.
• Non-Standard Character Design: The developers deliberately hired Oh! Great who had never worked on Digimon before to create a new kind of monster that would be offputting for fans of Digimon, with the basic starting concept being a monster that "destroys Digimon from within and ravages them".
• Powered by a Forsaken Child:
  • Both "powered" and "limited"; Yuugo Kamishiro is its current active core; his presence is inducing it to eat humans, and it's implied that his negative feelings of isolation and abandonment are contributing to Eater's rampage. At the same time, he's also acting as a limiter on it through its Hive Mind. Without his presence as a "conscience", it would be liable to eating everything without restraint.
  • Hacker's Memory shows what would happen without Yuugo acting as a limiter. Erika ends up creating her own Eater Bits to serve her, but once her illness incapacitates her they immediately turn on her, use her connection to EDEN, and within hours EDEN is replaced entirely by "Eater EDEN".
• Status Effects: They enjoy using paralysis in the earlier levels and dotting in the later ones.
• Unmoving Plaid: Each form past the initial squid-like one has parts that are textured this way, to emphasize how otherworldly and wrong they look.
• Weak to Magic: The Purebreed Eaters fall under this. Where they excel in physical defense, their INT stat falls very short. Thus, strong INT attacks are advised. The inverse holds true for their Humanoid Forms, which are highly resistant to INT attacks but weak to physical attacks.

Rie Kishibe

A high-ranking member (and later CEO) of Kamishiro Enterprises, a flirtatious and unsettling woman whose motives are impossible to decipher. Yuuko knows her well, but is wary of her, and she stands as an obstacle to Aiba and Kyoko's attempts to investigate her company.

• Ambition Is Evil: She's described as having quite a bit of greed and ambition prior to her ascendancy to the position of president, to the point of having plotted to ruin Satoru Kamishiro's name and take his position.
• Arch-Enemy: Yuuko has a deep hatred for Kishibe for a variety of personal reasons. This animosity extends to Crusadermon once they reveal themselves to her. Kishibe herself has more important matters to attend to, but takes special pleasure in psychologically tormenting Yuuko when possible.
• Asshole Victim: She was one of the victims of an Eater attack ordered by Suedou like Kuremi (and that Suedou specifically ordered the Eaters against her), but since she's already planning to blackmail Kamishiro way before this and Kuremi was in EDEN trying to investigate her when the attack happened, she mostly deserved it.
• Bitch in Sheep's Clothing: Plays herself up as being like a caring foster older sister to Yuuko (who isn't buying it, especially after she threatens to "accidentally" do something to her comatose brother). Even with Crusadermon's presence this is indicated to be her actual personality to some extent, given how despite their open hatred of humanity Crusadermon still says Kamishiro's murder was more Rie's will than their own.
• Corrupt Corporate Executive: Even before Crusadermon took over her, she's been trying to blackmail Kamishiro with fabricated scandals so she can become the CEO of his enterprise. When Kyoko was hired by Kamishiro to investigate the underground activities within his own company, she lures her into EDEN and Suedo takes the oppurtunity to deploy several eaters to prevent Kishibe from upsurping Kamishiro.
• Crapsaccharine World: The secret room made in her image is filled with overly saccharine decor.
• Evil Counterpart: To Kyoko Kuremi, both being Royal Knights in human hosts and she is what Alphamon could have become if it took her body instead of Kuremi's.
• The Fake Cutie: She has very cutesy and saccharine mannerisms, but no one is really fooled by it.
• Femme Fatale: She's incredibly seductive to the men she meets, though the "childlike" nature she takes with it gives it a definitively creepy edge. Especially since it's revealed that, as Crusadermon, she actually detests all of humanity.
• He Who Fights Monsters: Crusadermon isn't very happy with becoming an accursed human as part of the plan to Kill All Humans.
• Humans Are the Real Monsters: Crusadermon claims that most of their sadism and manipulative actions came from the lingering aspects of the real Kishibe's consciousness twisting their thoughts into something darker than they already were. The Knight says that depths of Kishibe's malice disturbed even them. It was seeing the inside of Rie's head that confirmed their plans to wipe out humanity; to them a species that produces and empowers beings as evil as Rie Kishibe simply must be destroyed.
• Karma Houdini: This doesn't apply to Crusadermon, but the original version of her is still described as having attempted to hijack Satoru Kamishiro's position as president and harboring murderous intent towards him, yet in the "new Tokyo" provided by the Cosmic Retcon she retains her high-ranking position and seems to be seducing the president, to the point where she might end up becoming Yuuko's stepmother!
• Manipulative Bastard: She's the one pulling the strings for most of the plot-relevant villainy in the human world.
• Meaningful Name: "Kishi" means "knight", and of course, her true identity is...
• The Mind Is a Plaything of the Body: Rie's "ambition" was apparently what influenced Crusadermon to murder Satoru Kamishiro, despite the fact that her mind was not currently in her body. Her other negative and abhorrent emotions didn't give Crusadermon a much better opinion of humanity, either.
• Obviously Evil: Her unsettling disposition makes it very clear from the moment she appears that she's not going to be on the side of the good guys.
• Psychopathic Manchild: Part of the reason her demeanor is so unsettling is that she's channeling a ton of childlike Moe tropes despite being a grown woman.
• Really Gets Around: She claims that she had dozens of boyfriends at Yuuko's age and suggests she do the same. Her often seductive talk only reinforces the notion.
• Say It with Hearts: Used for intentionally nauseating effect in the Japanese version.
• Spiteful Suicide: Being so close to opening the Digital Gate and linking Earth to the Digital World, Crusadermon doesn't care much for maintaining her human guise or Kamishiro and deliberately flings Kishibe off the Tokyo Metropolitan Government Building in Hacker's Memory to spite Matayoshi and Hudie and throw them off her trail.
• Sugary Malice: She couches her cruel and manipulative actions in the same mocking, syrupy sweet faux-seductive tone as everything else she says. This only makes the heroes hate her even more.
• The Tease: She deliberately plays up her sex appeal and speaks with innuendos to distract and disarm those she speaks to. To the protagonists and player, her demeanor being so obviously faked only makes her malicious actions even more disturbing.

Akemi Suedou

A mysterious scientist who works for Kamishiro Enterprises and happens to be investigating the Eaters, providing useful information about his findings to the protagonists. His real motives are vague, however, and seem to extend beyond simple interest.

• Amnesiac Resonance / Alas, Poor Villain: Word Of God states that he once had a lover who passed away and tried to erase his own memory of them only to have lingering feelings of sadness and no idea where they came from, driving him to hatch his plan to erase sadness from the world. For obvious reasons, he never brings this up in the game proper.
• Anti-Villain: His motives are not necessarily evil, only misguided at worst. His methods however leave much to be desired.
• Assimilation Plot: His wish is to make the real and digital worlds "perfect", and ends up aiding a plan to rip a dimensional portal open and start mingling them. His ultimate goal is to make the world "evolve" through Mother Eater's power, creating a world where "no one will feel sadness anymore".
• Big Bad: Ultimately becomes this having hijacked the Eaters to his own end by the game's finale and the form Mother Eater takes when he hijacks it is the final boss for the game. Drasil and the Royal Knights have been completely taken out of the picture, thanks to both the Eaters and the protagonists, leaving no one to oppose Suedou on the antagonistic side.
• Blue-and-Orange Morality: Suedo operates on the principle that learning is always a positive and suffering should be avoided. His personal compass doesn't align with any normal definition of morality.
• Face of a Thug: His appearance is on par with some of the more monstrous human antagonists of Digimon, but he's actually one of the more noble ones out there.
• Friendly Enemy: Despite his creepy looks, he is a pretty amicable fellow and helps the heroes out on multiple occasions.
• For Science!: The primary motivation for everything he does is to advance his knowledge beyond normal human limitations.
• Gender-Blender Name: Akemi is generally a female name in Japan.
• Getting Smilies Painted on Your Soul: Part of his end goal is to basically make sadness impossible as a concept, a world where everyone can be unconditionally happy.
• Godhood Seeker: His final plan is to hijack Mother Eater and use its power to remake the world. Interestingly, he doesn't want power for the sake of it - he just wants to be the one to do it in accordance with his own vision.
• Heel–Face Revolving Door: It's hard to say exactly what side he's on; he offers his assistance to the protagonists on multiple occasions, providing them necessary information they need and even bailing them out once or twice, but also happens to be assisting Crusadermon's plan to wreak dimensional havoc. The protagonists are aware that he's working for his own ends, and regard him with a shade of distrust even when he's helping them out. Ultimately, he ends up on the heel end as his motives become too selfish for the others to allow.
• Heel Realization: That being said, when Ami/Takemi risks their very existence to enter the Mother Eater and try to rescue him because they didn't want anyone, Suedou included, to disappear, even after having just stopped his master plan, he comes to realize his folly of trying to recreate a world without sadness (at least, in his own...weird way) and decides it is better to let the universe unfold on its own, and writes himself out of history.
• Heroic Sacrifice: His reinitialization of King Drasil erases his existence in the "new Tokyo" so that he was never born.
• Mad Scientist: He gives off this vibe from his very first appearance, looking quite visually unhinged.
• Meaningful Name: His name sounds similar to "pseudo", indicating he's not what he seems. Perhaps more relevant to the game's cyberspace theme, however, is that it could also be a reference to the UNIX "sudo" (super-user do) override command.
• Noble Demon: His plan to save Satoru Kamishiro, whom he apparently respected deeply, involved using an Eater to absorb the mental data of the potential perpetrator and an innocent bystander. It didn't even pan out anyway because it led to Crusadermon possessing Rie's body and murdering him anyway - but he didn't seem to mind that as long as Crusadermon's plan was beneficial to his own ends.
• One-Winged Angel: Merges with the Mother Eater and King Drasil/Yggdrasil so he can remake the world as he sees fit, becoming the Final Boss.
• Opportunistic Bastard: He's not on the good guys' or bad guys' side; he'll help whatever side is convenient for him at the moment.
• Pet the Dog: He wiped the memories of the survivors of the EDEN beta in order to spare their sanity of seeing an Eater attack.
• Poke in the Third Eye: During Aiba and Arata's excursion to the deeper part of Avalon server to discover Rie's plans, they observe Rie and Suedou in another room from the confines of Rie's secret room. As Rie and Suedou are leaving their room, Suedou briefly looks straight at Aiba and Arata, seemingly knowing where they are.
• Ret-Gone: Reinitializes King Drasil from within Eater, causing everything to converge and making it so that he was never even born in the universe of the Cosmic Retcon.
• Screw Destiny: Aiba's actions convince him not to resign himself to the world being fated to end in sadness and accept the infinite possibilities in the world, leading to his Heroic Sacrifice.
• Well-Intentioned Extremist: Even though he acts as the Big Bad of the game, the worst thing he tries to do is evolve the human race to the point where there's no sadness, and he's genuinely baffled that the heroes would prefer the current, flawed world to the one he's proposing.
• Wild Card: One second he'll be helping you, the next, he's helping your enemies. Really he'll do whatever he finds of value regardless of what others may think or what may be considered ethical.

Yuugo

A hacker that Aiba meets in EDEN and the leader of Zaxon. Despite leading a group of malicious hackers, he himself is cordial, teaching Aiba how to use their Digimon Capture and occasionally restraining the hackers from becoming too much of a nuisance. However, he has his own personal goals and refuses to let anyone get in his way. For some reason, he bears an uncanny resemblance to the "white boy ghost" making appearances around EDEN, but he himself claims to merely be an elusive human.

His partner is Machinedramon.

• A.I. Is a Crapshoot: Subverted. Rie gave the "Yuugo" account to Yuuko specifically so it could gather the hackers in EDEN into a trap, with Yuuko none the wiser. So when she goes to erase the account, it reveals it's sapient and proceeds to fight her.
• Actually a Doombot: The "Yuugo" leading Saxon is actually an account remotely controlled by his sister Yuuko, before eventually revealing itself as an Artificial Intelligence serving Rie. The actual Yuugo is acting as a Power Limiter for the Mother Eater, and appears as the Specter of the White Boy.
• Angst: After hearing about his actions in regards to Nokia and the Rebels, Kyoko concludes that despite his good intentions, he's really just going through a ton of teenage angst.
• Anti-Villain: Despite the fact he's the leader of one of the most prominent hacker groups in EDEN, the members of which wreak havoc on its users, he himself doesn't take part in that kind of activity, assists and saves the protagonists at multiple points in the narrative, and even professes disappointment at the current state of EDEN. His stated goal is to unite the hackers and protect EDEN out of love for it; it's just that he doesn't treat anyone who gets in his way kindly. He's also out to investigate Rie and Kamishiro Enterprises, and wants to mobilize the hackers of Under Zero to break in so he can find the truth.
• Everyone Has Standards: Despite how openly he makes membership to Zaxon available he still felt the need to personally throw Jimiken out of the group for single-handedly breeding a large criminal subculture in the group.
• Grew Beyond Their Programming: Later in the game, "Yuugo" develops beyond his original programming to become an independent entity thanks to the data he gathered from Yuuko memories of both the original and her time imitating him.
• Leitmotif: "We Bring Glory to ZAXON".
• Rebel Leader: He claims to work for the "freedom" of hackers in EDEN so that they can do what they please, and eventually mobilizes them to assist him in a large-scale attack on Under Zero.
• Samus Is a Girl: The "Yuugo" leading Zaxon is actually an account controlled by Yuuko.
• Signature Mon: Yuugo has Machinedramon and RizeGreymon as partners, but the one who devotes its loyalty to Yuugo is Machinedramon. When Yuuko decides to ally with Aiba, Machinedramon refuses to follow her and instead remains loyal to the "Yuugo" program. It's also heavily implied that Machinedramon as a Pabumon met the real Yuugo many years ago.

Fei Wong Tomoe Ignacio

Yuugo's right-hand woman, of half-Japanese, quarter-Chinese, and quarter-Brazilian lineage with a Kyoto dialect. She has a calm but sadistic edge to her, a particularly hostile relationship with Nokia, and a very devoted sense of loyalty to Yuugo.

Her partner is TigerVespamon.

• Accent Adaptation: She appears to have been given a kind of Southern Accent in the English version of the game.
• Ambiguously Bi: Throughout the game she's presented as extremely devoted to Yuugo/Yuuko, to the point where she's shedding tears of joy after she's saved from Eater Eve. Nokia lampshades this, teasing Fei about whether or not she wants more than just friendship. A journal entry in Hacker's Memory is summarized as her attempts to impress a lover (implied to be Yuuko), with said lover's pronouns being female, which seems to confirm that she's attracted to girls. It could possibly be described as Single-Target Sexuality in Yuugo/Yuuko's case, considering that she has no mental issue whatsoever swapping between referring to Yuuko in her "Yuugo" and normal female personas, and uses the same loving words for both. She also lightly flirts with Aiba at one point regardless of gender.
• Anime Chinese Girl: Her name has Chinese roots, she's got a very sporty design and her massive Odango Hair make her look like a Chun-Li clone. Her character artwork for Hacker's Memory even has her do a kung-fu stance.
• Arrogant Kung-Fu Guy: Her rivalry with Nokia essentially makes her the hacker equivalent of one.
• As Long as It Sounds Foreign: Not only her third last name, Ignacio, is not a surname, but it's not even Portuguese. The correct spelling of that name in said language is Inácio.
• Because You Were Nice to Me: Yuuko/"Yuugo" was the one who gave her TigerVespamon, giving both of them a "place to be" (with each other).
• Break the Haughty: Getting absolutely bulldozed by Nokia and Omnimon then having Yuuko kidnapped breaks her ego and causes her to become more genuinely helpful.
• But Not Too Foreign: Her parents were apparently Japanese and Chinese-Brazilian, according to her official profile (it's never brought up in the game beyond her name). Her name is accordingly a mix: Fei Wong (Chinese) Tomoe (Japanese) Ignacio (Brazilian).
• Color Motif: She is associated with the color yellow. Not only does she sport it on her outfit, but all three of her party Digimon (including her signature) are primarily yellow in color.
• It's All My Fault: She blames herself for the destruction of Hudie Net Cafe (and Arcadiamon’s evolution to Ultimate, by proxy) because she completely lost it against Ryuji. She’s not wrong.
• Japanese Dialects: She sports a very thick Kansai accent in the original Japanese version. The official English translation gives her a Southern accent, albeit a much less extreme one.
• Let's Get Dangerous!: When fighting Nokia in Under Zero, one her techniques is "Playtime is over!", which heals all of her Digimon to full HP and boosts several of their stats, just in case it wasn't obvious enough how much it's a Hopeless Boss Fight.
• Nice Job Breaking It, Hero!: In Hacker's Memory, just when it looks like Erika is able to reach out to the brainwashed Ryuji, Fei decides to pick a fight with the latter after he threatens Yuuko which subsequently results in Arcadiamon evolving to its Ultimate form and destroying the Hudie shop building, nearly taking both Erika and Fei out in the process.
• Number Two: Is this to Yuugo in Zaxon, being his primary companion and enforcer and as well as being the only one to know of his true identity as Yuuko.
• "Not So Different" Remark: She notes that she and Nokia are quite similar in certain ways...before declaring that she hates her own kind and attacking her anyway.
• The Rival: To Nokia. It becomes more of a friendship after Nokia finally curbstombs her in battle.
• Secret-Keeper: She was aware of "Yuugo"'s true identity as Yuuko, and the fact that the avatar was based after the real Yuugo Kamishiro.
• Signature Mon: Fei has multiple Digimon working for her, but TigerVespamon is the one that's closest to her and understands what Fei desires. TigerVespamon speaking to her and helping Aiba in her stead to save Yuuko is what helps Fei to change her perspective on Digimon.
• Two First Names: Her third last name, Ignacio, is actually a first name.
• Undying Loyalty: To Yuugo, to almost obsessive levels; Nokia assumes that she must be in love with him.
• What Happened to the Mouse?: We never find out what happened to her relationship with Yuuko after the Cosmic Retcon, and if it's been affected in any way.
• What Measure Is a Non-Human?: She considers her Digimon to be programs and is alarmed when they begin "acting against orders". However, she does seem to find value in being with TigerVespamon, even when seeing her only as a program.

Jimiken (Jimmy KEN)

A famous rock star in the real world who also happens to be a particularly arrogant and malicious hacker. Although he starts off a member of Zaxon, he forms his own group called Demons after being kicked out by Yuugo for his criminal actions.

Though he doesn't have a core partner, he maintains a team of Devimon; Meramon -> SkullMeramon; BlueMeramon -> Boltmon.

• Berserk Button: Calling him out on being an obvious ripoff of KISS is one, even when Nokia fumbles on the name of it.
• Catchphrase: "You pickin' up what I'm puttin' down?" (In Japanese, it's "Is it coming across? This feeling.")
• Clark Kenting: Early into the game, in one of the first visits to Shibuya Records, you can talk to a businessman called Tanaka that, out of the blue, denies being Jimiken. Since "Tanaka" is later confirmed to be part of his real name, there's the implication that Tanaka is Jimiken in disguise (an implication that is outright confirmed in Hacker's Memory)
• Embarrassing First Name: Or at least, in his opinion, because he keels with embarrassment when Reiko accidentally reveals his real name: Tanaka, a stereotypical "generic name" in Japan.
• Faux Affably Evil: He always acts like he's in a good mood, laughing all the while no matter what he's doing. This attitude usually drops when he loses of course. However, he undergoes some Character Development after his Mass Hypnosis plans are thwarted; his attitude and irreverence towards the player doesn't change, but he becomes much more legitimate, and even invites Reiko Tawa to go on tour with him.
• Gratuitous English: In the Japanese version, he peppers his speech with tons of badly-conjugated and nonsensical English (the above Catchphrase has the word "feeling" in English).
• Mass Hypnosis: With Rie's assistance, he uses subliminal messaging in one of his videos to hypnotize a bunch of fans into running away from home and coming to his concert.
• Meaningful Name:
  • Fittingly for a rock star, Jimiken has a very similar spelling to Jimihen, which is how Jimi Hendrix was known in Japan.
  • His real name, Masao Tanaka, much like his appearance when not donning his rock-star attire, is incredibly generic.
• Never My Fault: He blames his continuous battle losses on his Digimon not being good enough. Nokia calls him out on it.
• Pet the Dog: Don't get him wrong, he's still a jerk to you, but after his scheme is thwarted he apparently softens up a bit to the point that he even invites Reiko to tour with him rather than kidnapping her as the player thought, and it is implied he is much nicer to her and even shared with her his real name: "Tanaka".
• Puppet King: Although he's always an Unwitting Pawn, Hacker's Memory reveals that K is the true leader of the Demons, or at least claims to be so.
• Start My Own: After he's exiled from Zaxon, he and a few of their other bad apples form their own hacker group the "Demons".
• Verbal Tic: He usually has a "lol" thrown into his words to play off his seemingly jovial nature.
• Wake-Up Call Boss: Especially on Hard Mode; he's the first major boss the game throws at you that isn't defeatable within a few minutes and is capable of decimating your party.

The Specter of the White Boy

A mysterious, phantom-like boy occasionally sighted around EDEN, who, according to Suedou, is the "physical manifestation" of Eater; his presence signifies that Eater is nearby.

• Beneath the Mask: He constantly repeats that he doesn't want the others to come save him, because it's too dangerous and because it'll stop him from being a Power Limiter...but when Aiba Connect Jumps into Mother Eater, they see an apparition of Yuugo's true feelings revealing him to have been feeling lonely and abandoned and wanting to be saved while the real Yuugo pleads with them not to listen.
• Distressed Dude: The final battle of the game is a journey to the Digital World to save him.
• Forgotten Childhood Friend: He is the forgotten friend in question, the real Yuugo Kamishiro; the incident regarding him caused Suedou to wipe his friends' memories to spare them their sanity.
• Heroic Sacrifice: He tried to hold off the invading Eater in the Digital World eight years prior to prevent it from reaching the other kids, and became the first EDEN Syndrome victim as a result.
• Hive Queen: Although he can't directly control them, he's capable of seeing things and communicating through Eaters; even then, he has a difficult time doing so, and is only able to appear to Aiba through a "memory fragment" he places in them at the start of the game.
• Power Limiter: He's responsible for restraining Eater as part of its core; without his presence, Eater is capable of going on a rampage, eating everything indiscriminately. This is the only reason either world survived the Eaters for so long. Hacker's Memory reveals that an unrestrained Eater could devour all of Eden within a few hours.
• Strong Family Resemblance: Despite being Yuuko's brother, Yuugo that we usually see is white-haired. That's because it's not the real Yuugo, merely his avatar being controlled by Yuuko. The real Yuugo has black hair, making him resembles Yuuko more.
• Walking Spoiler: As he's one of the most important characters in the plot, the number of spoiler tags in this section alone was inevitable.

King Drasil (Yggdrasill)

• Adaptational Wimp: Gone is the nigh-unstoppable godly entity who requires nothing short of Story-Breaker Power to defeat, replaced by a head figure who is easily corrupted by outside force (Eaters) or even a human (Suedou). The 7D6 avatar, previously appeared as the Final Boss of Digimon Data Squad, has also been reduced to Elite Mook level of security system.
• Ambiguously Evil: It merely figured out where the Eaters came from and told the Royal Knights to investigate, whether or not it actually wants humanity destroyed or not isn't clear, as Leopardmon and the other evil Knights seem to have assumed it was.
• Humans Are the Real Monsters: This is its "will", or, at least, if half of the Royal Knights are to be believed.
• Lighter and Softer: Compared to other incarnations of Yggdrasil, anyway.
• Master Computer: As per the tradition of the Digimon franchise, it's not actually a god as much as it's just a master computer running the Digital World.
• Mercy Kill: The protagonists never fight it while it's bearing malicious intent. By the time they reach its terminals, it's pleading for help, so destroying them comes off as euthanizing them. The core entity survives, however.

Keisuke Amasawa

The Hero(?) of Hacker's Memory. His original EDEN account was stolen by a hacker, causing him to set up a temporary account, drawing attention and accusations of being a hacker himself. In order to clear up this mess and restore his reputation, he seeks out the hacker who raided it, running into Ryuji Mishima, and subsequently joins the hacker group known as Hudie. He is given the choice of a Betamon, Tentomon, and Gotsumon as his Starter Digimon.

• Badass Longcoat: What primarily marks him as a Hudie member is his long blue coat.
• Beady-Eyed Loser: He is consistently described by other characters as having a generic and unmemorable face. His small irises are the only thing that differentiates him from other characters.
• Beware the Quiet Ones: Chitose bluffs his way into intimidating the Steam Dealers group by pretending that Keisuke's super violent underneath his quiet demeanor.
• Bittersweet Ending: Leaning much further into bitter than sweet. Keisuke ends up being a hero as he had wished, but the massive problem with this is his Ripple-Effect-Proof Memory, which forces him to retain all the memories of all the adventures and incidents he went through with Erika, who becomes Ret-Gone by choice by turning into Hudiemon and live in peace in the Digital World as to never face the possibility of dying as a human and inconvenience her older brother taking many sacrifices so she could barely have a stable life. As a result, only Keisuke is left to live in a world where no one can hope to prove that he was the hero he became and can't ever see Erika again. The only consolations, besides granting Erika's wish, are that he's still a member of Hudie and Yu was given a break by also becoming a member and having a healthy friendship with Ryuji and Chitose.
• Butt-Monkey: He's constantly abused by people and even his own team several times.
• Canon Name: His given name can be decided by the player, but he's officially referred to as Keisuke Amasawa.
• A Child Shall Lead Them: By the end of the story, both Ryuji and Chitose agree to give him the mantle of leader (temporarily) because Ryuji has a lot to answer for due to his actions under Arcadiamon's control and Chitose being so helpless after coming out of his EDEN Syndrome.
• Clear My Name: His initial motivation as he tries to find his original EDEN account and explain he's not a hacker to his school.
• Contrasting Sequel Main Character: Towards Aiba. Both are All-Loving Hero, especially towards Digimon. However, there are several key differences:
  • Aiba has much more deliberate design, and becomes a Liminal Being with special powers that benefit their adventure through network. Keisuke, on the other hand, while having hacking skills that improve as the story progresses, is a Ridiculously Average Guy and intentionally designed as such, with a very plain appearance and only has Badass Longcoat to stand out (and even then, you can change outfits).
  • Personality wise, Aiba is notably more jovial and hyperactive, and very prone to joke dialogue options. Keisuke, while not without funny dialogues and can sometimes become snarky, tends to have more normal reactions towards the events of the story.
  • As per Digimon protagonists tradition, both of them have goggles that also double as their Digivice. However, Aiba's goggles have more conventional design, while Keisuke's are VR headset, a huge departure from the tradition while also emphasizes his status as a hacker.
  • Aiba's gender can be selected, something that Keisuke cannot switch.
• Friend to All Living Things: Like Aiba, he can have very dedicated bonds with his Digimon pals. Furthermore, he demonstrates the trope proper at the game's beginning, where he's determined to free whatever two Digimon the player didn't pick to own. It's this friendliness that inspires the Digimon he did pick to stay with him after the event is all said and done.
• The Gadfly: Several of his dialogue options include provoking whomever he's talking to with playful banter, comments, or insults. Especially if Erika is concerned (after she's warmed up to him). He also likes to tease Yu from time to time.
• The Greatest Story Never Told: Said so himself. Several things that happen in Cyber Sleuth occur because he happened to have an indirect hand on them, such as Kyoko's insane coffee blends and even Yuuko's attempts to act like a "normal" friend.
• Goggles Do Something Unusual: In a departure from the typical Digimon installment, his goggles are instead a VR headset that also functions as his Digivice.
• Hello, [Insert Name Here]: Like Aiba before him, Keisuke's given name can be changed by the player, but his surname Amasawa remains unchanged.
• Heroic Mime: The only times he ever speaks are in a few cutscenes and during battle. Dialogue choices and actions seem to indicate that he's got a strong sense of justice and a penchant for snarkiness.
• Inconsistent Spelling: In several advertisement, his surname was written as Amazawa. His finalized surname is Amasawa.
• Limited Wardrobe: Averted. Unlike Aiba, Keisuke has many different shirts and several outfits to choose from, and is capable of changing at nearly anytime.
• Mistaken for Profound: Kyoko interprets his decision to make a silly face instead of striking a pose for a photo during her Shinjuku experiment as a reminder to take in all the factors for composing a photo when he actually just likes making that face for photos.
• Not a Morning Person: According to random replies in the DigiLine, he admits he's this.
• Only Sane Man: As the story progresses, Keisuke eventually becomes this amongst Hudie members. Between Ryuji who takes himself too seriously and also prone to outbursts despite being The Leader, Chitose who's prone to womanizing and stupid antics, and Erika being a withdrawn and sickly girl, Keisuke proves to be vital in keeping Hudie standing. This is also the reason why during the end of the story, he's the one who is appointed the leader of Hudie, as Ryuji must atone for his Face–Heel Turn, Chitose has just recovered from EDEN Syndrome, and Erika is being assimilated by the Eaters and needs rescuing.
• Ordinary High-School Student: A perfectly unremarkable student who hadn't gotten involved in any trouble before his account got raided.
• Ridiculously Average Guy: Keisuke's lack of distinctive qualities is often called to attention in the plot. Unlike Aiba, he has no history in the Digital World, no special powers, and no connection to the major players in the plot of the Eaters and Digital World. He's just a kid who got his identity stolen and decided to try to get it back by joining a hacker group. Even his looks are much more generic than those of Aiba.
• Ripple-Effect-Proof Memory: Despite the world being reset in the end, the ending cutscene shows still remembers Erika and mourns her loss.
• Shouldn't We Be in School Right Now?: Keisuke stops attending his high school after facing the social rejection from having his account stolen. It's not clear if he's officially dropped out of school, but he seems to work as a member of Hudie full-time by the time of the story.
• Thousand-Yard Stare: What he's seen giving in promotional material for the game and certain cut-scenes; his rather small irises only reinforces the imagery. Granted, he's much more facially expressive in-game.
• Unwitting Instigator of Doom: Played for Laughs. Several cases end up showing that in one way or another Keisuke was indirectly responsible for the odd things that happen to Aiba, such as providing the ingredients for some of Kyoko's coffee or having provided the books that led Yuuko to assume a friend needs to act like an Emotionless Girl Tsundere.

Erika Mishima

A fellow member of Hudie and Ryuji's younger sister. Her brain is partially connected to EDEN at all times, making her incredible with information processing. Her Digimon partner is Wormmon.

• 11th-Hour Superpower: During the final battle, to prevent her memories from being completely assimilated by the Eaters, Erika performs a Fusion Dance with Wormmon to become Hudiemon.
• Agent Scully: She's highly skeptical of the various phenomena going on in EDEN and Tokyo and believes in examining all the evidence before reaching a conclusion. The one that really frustrates her is Mirei since she thinks of the rumors of Mirei being a witch are nonsense but her Digilab is unreachable by conventional means for her, Mirei casually blocks her from entering when she tries to hack her way in, and Keisuke's explanation doesn't satisfy her.
• Always Someone Better: Initially, Ryuji was the better hacker, but Erika eventually surpassed her brother. Considering how she uploads her memory into a server in Eden to avoid overloading her brain due to her illness, allowing her to memorize lots of data and knowledge, it's not that surprising.
• Animal Motif: Butterfly. Being the Deuteragonist of Hacker's Memory, Erika is associated with butterflies, which also become the recurring motif for the story as a whole. Being de-facto owner of Hudie, she's revealed to be the one who initiates the formation of Hudie, while also suggesting its name and motif. During the game's intro at Enjoy Chat room, she uses a butterfly as her avatar. Two major tropes associated with butterflies become the story's central theme largely due to their heavy relation towards Erika herself:
  • Schrödinger's Butterfly: Early in the story, Keisuke can ask about what "Hudie" means. Erika explains that it comes from the Chinese of "butterfly" while also brings up the trope's origin by Zhuangzi, and provides the parallel regarding digital data and memories. Since Erika's illness forces her to regularly store her memories in an EDEN server, she also wonders if the "real" her is the memories in EDEN instead.
  • Butterfly of Death and Rebirth: During the climax, having her physical body being assimilated by Eaters, the remaining fragment of her digital memory performs Fusion Dance with Wormmon and evolves into Hudiemon, a humanoid butterfly Digimon. As she fights alongside Keisuke, she even says goodbye to herself when she realizes that her physical body is basically dead, while she and Wormmon have been reborn into a new entity.
• Bitch Slap: Delivers an incredible one to Rie/Crusadermon on the Metropolitan Building rooftop, for demeaning human pain and suffering.
• But Now I Must Go: As Hudiemon, she departs to the Digital World because her staying in the Human World after the Cosmic Retcon would still lead to her inevitable death and cause grief to Ryuji all over again.
• Delicate and Sickly: Her illness can be exacerbated by physical or emotional strain. In one early game event, so little as walking too far caused her a life-threatening flare up.
• Defrosting Ice Queen: She starts off as cold and somewhat apathetic, but thanks to her interactions with Keisuke, she gradually warms up to him as the story progresses. Even Ryuji and Chitose remark that she opens up more and more ever since Keisuke joins the team. Her bond with Wormmon follows a similar trajectory, starting by seeing him as little more than a curiosity before eventually seeing him as an irreplaceable companion.
• Deuteragonist: Erika is indisputably the other leading character besides Keisuke of Hacker's Memory as her backstory is pivotal to Hudie as a whole, motivated Suedou into becoming a villain, and provides the means for Eater to fully take over EDEN. Her arc is the one to most prominently intersect with the themes of Schrödinger's Butterfly and the importance of memory. The theme of identity while jumping between worlds is seen in her recognizing the utility of being so connected to EDEN while being insecure about what this means for her identity when both reality and data blur together. She frequently asserts that memories form who she is, from how she's relied to EDEN to store them to rebuilding herself from said memories to help create Hudiemon. Her entire partnership with Wormmon ties into both themes as their identites independent of each other become blurred the more Erika transfers her memory into it, culminating in the two coalescing together as Hudiemon with the memories of both. Erika is the one who has the most development across the game and, along with Keisuke, is the one to ultimately put a close to the story by signifying she'll watch over him and the rest even after leaving for the Digital World.
• Double Standard: Abuse, Female on Male: Erika often engages in this against Keisuke, even when the latter does nothing wrong. At one point, she even punches Keisuke, even though she's actually being angry at Wormmon, citing that the hit is meant for the Digimon. This bites her back late into the story: Erika insists on looking for Ryuji who has been possessed by Arcadiamon, despite being sickly herself in the hospital. Wormmon, having physically manifested in the real world, knocks her out cold so she can stay and resume her therapy, with Chitose remarking that since Wormmon shares his memory with Erika, he gradually becomes more like her.
• Emergency Transformation: To prevent her from being entirely consumed by the Eaters, the last intact portion of Erika's memory data willingly gives up on what's left of her humanity and permanently fuses with Wormmon to become Hudiemon.
• Fusion Dance: Happens to her twice. The first is when her Eater Bits turn on her, creating Eater Legion. During the fight against Eater Legion the final uncorroded portion of Erika's memory informs the members of Hudie that at that point her body has been completely lost and its death means her death. After being reminded of everything she wished to do with her life that fragment fuses with Wormmon to become Hudiemon, who proceeds to assist Keisuke in killing her former self, declaring that she's the "new Erika".
• Genius Sweet Tooth: She loves mixing juices sweet enough to knock out most people. It's later justified that her condition make her brain work so much that she requires additional energy from things like these concoctions to fuel it and alleviate the strain.
• Girls Love Stuffed Animals: Her whale plushie, Memetan, which doubles as a modded portable PC is just one of many stuffed animals in her collection, though this one's the most precious to her. There's even an entire sidequest dedicated to snagging her another stuffed animal from the same lineup as Memetan. Her memory server reveals even more stuffed animals in her old childhood bedroom and that Memetan was with her in the car accident her parents died in, explaining why she's so attached to that one in particular.
• Hikkikomori: At the beginning of the game, she's basically confined herself to the VIP room of their net cafe. When she leaves for the first time, she mentions that it's been ages since she went outside and begins to slowly go out more and more as the game's story progresses.
• Hive Queen: Toward the end of the game she manages to hack into an Eater and use the information to create her own small army of Eater Bits. While they do prove necessary to defeat Arcadiamon, it ultimately becomes her undoing when she loses control of them. Once her control slips, they turn on her and assimilate her into Eater Legion. Worse, her connection to EDEN grants them access to the network, creating a whole new threat that dwarfs Arcadiamon's own in the form of Eater EDEN.
• It's All My Fault: Erika blames herself for her brother's pain and desperation. Both for the expensive treatments she needs to live and for being the one who insisted on the car trip the ultimately killed their parents and caused her condition in the first place. To her credit, she chose to remain active rather than wallow in self-pity, but her attempts to make amends were arguably even more reckless and self-destructive than Ryuji's were.
• Insistent Terminology: She's not dissecting poor Wormmon, she's analyzing him.
• Liminal Being: As Erika stores the bulk of her memories in a server to lessen the strain on her physical brain, she often muses that she's as much of a digital being as she is a flesh and blood human. This perspective is part of why she chooses to live on as part of Hudiemon rather than allow herself to be reborn with the rest of the universe.
• My Skull Runneth Over: Her illness is described as damage to her brain that causes it to overwork itself with too much information. She has to offload the bulk of her memories into an external storage system regularly to lessen its burden. If she doesn't, the strain of processing too much data will leave her brain unable to manage the rest of her body, leading to painful and potentially fatal organ failures. Even this procedure proves to be a temporary solution. She simply has too much information in her memories for her ailing brain to withstand and will inevitably die when the strain grows too great.
• Nice Job Breaking It, Hero!: When trying to find a way to cure Chitose's EDEN Syndrome, and with help from Suedou's research, Erika breaks into the Mother Eater in the Digital World and hacks an Eater in the process. It works, and Chitose is cured... but when she develops the Eater Bits in order to help take down Arcadiamon, and subsequently loses control of them, it starts a chain reaction that ends up with all of EDEN corrupted with Eaters.
• Power Incontinence: Essentially how her illness works. Her brain would occasionally work so hard the rest of Erika's body suffers as a result, and thus needs to have her memories periodically stored in EDEN just to keep it under control. And even that is eventually revealed to only delay the inevitable.
• Ret-Gone: As history is being rewritten Hudiemon is left with the choice of returning to being Erika who will still suffer the accident that killed her parents and gave her her illness, or to remain as Hudiemon while the new world has no Erika which would prevent the accident from occurring, sparing Ryuji the loss of his family. She chooses to remain Hudiemon, and is only remembered by Keisuke in the new world.
• Ship Tease: With Keisuke. Erika quickly develops a close bond with the former throughout the story and it's even noted by Ryuji and Chitose how much she's opened up ever since he joined the team.
• Shorter Means Smarter: She's one of the most intelligent characters in the cast, with hacking skill surpassing even his brother Ryuji, but also the shortest of all the main human characters.
• Sweet Tooth: Due to the constant uploading of Erika's memories, her brain works harder than usual and requires more calories. As such, the average sweets are no longer tasty for her, and she needs to add more sugar to her food and drinks. At one point, when she makes a juice for Keisuke, the latter almost passes out because she puts too much sugar in it.
• A Taste of His Own Medicine: Erika engages in Double Standard: Abuse, Female on Male, especially on Keisuke and Wormmon, on even the most flimsy reasons. Come late into the story, when Erika insists on looking for Ryuji who has been possessed by Arcadiamon despite being ill, Wormmon, who has grown to behave more like Erika herself, knocks her out cold, forcing her to stay at the hospital and resume her therapy.
• Teen Genius: Erika is one of the most brilliant hackers alive despite being a very young girl, surpassing even the likes of her brother.
• Transferable Memory: Thanks to the method of treatment for her illness she's able to share basically everything about her mind with her Wormmon, making it her equal and able to fill in for her.
• Tsundere: She often alternates between "hot" and "cold" when interacting with Chitose and Keisuke, and often is reluctant to admit her true feelings.
• Unwitting Instigator of Doom:
  • It was at least in part her accident and family's desperation to turn to a completely insane and experimental treatment that drove Suedou toward his plan to push humanity beyond the concept of sadness.
  • While we don't get many details about it (understandable given it's such a difficult subject), there are a few hints in Erika's memory that hint that the accident that killed her parents and caused her illness had something to do with Erika herself. This becomes much more blatant due to how, in the re-written world where Erika no longer exists, Ryuji's parents are still alive.
• You Can't Fight Fate: The car accident that killed her parents and caused her illness is unavoidable. Because it was a random event that had nothing to do with the Digital World, it is still destined to occur even in the new reality created after the defeat of the Eaters. Rather than return and face losing her parents and being doomed to an early death again, Erika as Hudiemon chooses to follow Seudo's example and remove herself from the timeline entirely. With her gone, the fatal car trip would never occur to begin with, sparing Ryuji the pain of losing all of his family and allowing Hudiemon to live on in the Digital World.
• Young and in Charge: Erika is a young teenager, but is technically the manager of Hudie's cyber cafe. She leaves most of the day-to-day operations to Ryuji and Chitose while she handles the minutia necessary to keep both the cafe and hacker team as a whole afloat.
• Your Days Are Numbered: The strain her illness places on her body is slowly but surely worsening. Even the memory dump treatments are becoming less and less effective. A conversation with Suedo near the climax of the game has him sadly imply that Erika isn't expected to survive much longer. Those who know of the severity of her condition avoid telling her directly, but it's implied that Erika is all too aware that her life is nearly over.

Ryuji Mishima

The founder and leader of Hudie, and Erika's older brother. His Digimon partner is Cyberdramon, and later Arcadiamon before Justimon.

• The Atoner: Once he's freed from Arcadiamon's control, Ryuji becomes hellbent on making up for all the wrongdoings he did under its influence. Particularly for what he put Erika through and the lengths she went through to free him. At one point, he gathers as many of the hackers he attacked as he could get and all but demands that they beat him senseless in retribution. Luckily the remaining Hudie members stop that before it goes too far and convince him to make amends in less self-destructive ways.
• Berserk Button: Just seeing Arata makes him livid.
• Big Brother Instinct: Very much so. Most of his actions seen during the game, as well as the ones mentioned to have occurred prior, are for the benefit of Erika.
• Big Damn Heroes: Pulls this at the game's beginning, where he saves Keisuke from having his account raided twice.
• Brainwashed and Crazy: When Arcadiamon goes out, it takes a hold of Ryuji and makes his bottled-up insecurities and anger pour out too much. And when he's freed from Arcadiamon, he still wishes to repent for everything he did, despite the fact every other hacker knows it really was outside his control.
• Character Development: He is mostly seen as the level-headed leader of Hudie. But as the story goes on, his insecurities towards Erika start to come one by one, culminating in getting brainwashed by Arcadiamon and raining hell on the hacker community while angrily venting out on Erika for forcing him to drop a normal life to look after her and be another puppet for Rie Kishibe to manipulate. After all is said and done, he wishes to make amends and tries to force hackers to beat him up for what was really out of his control, which ends with Cyberdramon Digivolving into Justimon.
• Crutch Character: He often accompanies Keisuke on story missions during the first half of the game. Unlike the player character, who most likely has Rookies and Champions during this point, Ryuji is packing an Ultimate level Cyberdramon with infinite health and SP. Chances are he's going to be dealing much more damage to the opponent than your own Digimon will.
• Easily Forgiven: Both Keisuke and Chitose are quick to forgive for Ryuji for his actions as Arcadiamon's partner. Averted with Fei however due to him having threatened Yuuko's safety.
• Face–Heel Turn: After watching Chitose being fed on by an Eater during the failed Under Zero raid, he is corrupted by the Arcadiamon trapped within the area. He thereafter serves as an enemy for much of the game, since Arcadiamon is forcing him to feed it the data of hackers and their Digimon.
• Form-Fitting Wardrobe: It's more apparent in-game. It's also notable because he's the only male main character to wear clothing that accentuates his physique (compared to the many female characters who do).
• Hunk: Compared to the rather lanky male cast, Ryuji is much more defined muscularly (which is accentuated by his tank top). Even Makiko Date is visibly flustered by him.
• I Did What I Had to Do: He justifies becoming a willing party to Zaxon's corrupt dealings under the orders of Rie Kishibe's as necessary to ensure that Erika's treatments can continue. Erika herself doesn't buy into it and begs her brother to cut ties with Zaxon.
• The Leader: He formed Hudie with Chitose after the failed Jude attack on Under Zero. He calls all the shots on Hudie's major cases, though he does occasionally defer to Yuugo's authority.
• The Mentor: He teaches Keisuke the ropes of being a hacker and member of Hudie.
• Mythical Motifs: All of his Digimon used are draconic in some way since his name is Ryuji. ("Ryu" means "dragon").
• OOC Is Serious Business: Keisuke (then Chitose, and lastly Erika) are heavily distraught by Ryuji’s sudden distance during Chapters 10 and 11.
• Our Dragons Are Different: The Digimon he's personally raised all have draconian attributes, either in name or by design. Fitting considering his own Meaningful Name regarding dragons.
• Promotion to Parent: Though he's Erika's brother, Chitose notes that Ryuji often acts way more like a dad towards her since their parents died in a car accident several years before the plot.
• Secretly Selfish: Ryuji presents a strong and caring front, but underneath he's got a lot of issues he isn't dealing with. Specifically, he carries a lot of resentment for his situation. He shows this towards Arata for the loss of Judes. Under Arcadiamon's influence, he admits that he resents Erika herself for the responsibility of looking after her and the stress of knowing that he will be left alone when she inevitably dies from her condition all too soon.
• Sleeves Are for Wimps: His main outfit shirt-wise consists of a stylized sleeveless tank top. He, as the leader of the team, won't even wear his Hoodie jacket, which has sleeves, opting instead to tie it around his waist (but in a fashion where the Hudie logo is still clearly visible).
• The Stoic: He's pretty stern faced and serious most of the time, especially in the beginning of the game. If not for his occasional outburst every now and then, he'd take first place over Erika.
• Undying Loyalty: His Cyberdramon does not leave his side even one moment. It even tries to stop Ryuji from being brainwashed by Arcadiamon (in vain), and then protects him when Arcadiamon is defeated.
• The Voiceless: His Cyberdramon, like Chitose's Ankylomon, doesn't say a word, but it clearly does try to keep Ryuji safe.
• We Help the Helpless: Officially, Hudie is a hacker group for hire. In practice, under his leadership, they handle just about any case that is offered, even if it only tangentially involves the use of computer technology. In no small part because Hudie needs whatever cash they can get.
• We Used to Be Friends: Was friends and teammates with Arata in the past. The relationship still remains a sore spot for Ryuji.

Chitose Imai

The sub-leader of Hudie and a firm believer in justice. He and Ryuji have been friends for a long time, founding the hacker group together. His Digimon partner is Ankylomon before his given Angemon DNA Digivolves with it and becomes Shakkoumon.

• Bunny-Ears Lawyer: Chitose is a Chivalrous Pervert who spends a good chunk of his time ogling women and generally not taking anything seriously. However, that doesn't stop him from being an expert hacker who can whip up malware designed to track someone on a moment's notice and has set up a surveillance network that spans most of EDEN.
• Casanova Wannabe: A lot of his spare time is spent trying (unsuccessfully) to hit on women. The only one he doesn't seem to be interested in is Ryuji's sister.
• Catchphrase: "It's my hacking business!"
• Everyone Has Standards: Being a Casanova Wannabe, he hits on every girl possible with disastrous results, but the only one he isn't interested in is Erika despite being part of the team. Largely because she's Ryuji's sister, but also because she's a minor, something that he acknowledges.
• Fastball Special: Decides to introduce his "The Reason You Suck" Speech to Ryuji by throwing poor little Wormmon right onto his face.
• Get a Hold of Yourself, Man!: He tosses Wormmon at Ryuji's face and tears into the latter over his destructive antics with Arcadiamon, but this helps make Ryuji realize where he has gone wrong. That would've solved the problem then and there, if only Arcadiamon didn't have plans on its own.
• The Heart: With his generally cheerful attitude, he's the emotional glue that binds Hudie together. His influence on the team becomes much more noticeable after he is afflicted with EDEN syndrome, as Hudie begins to fall apart (both metaphorically and physically).
• Heterosexual Life-Partners: With Ryuji. Together, they formed Hudie after the Judes disbanded, cementing his place as Ryuji's right hand man and close family friend. It's also a major reason why Chitose saves Ryuji from an Eater attack, getting afflicted with EDEN syndrome in his stead.
• Information Broker: His role in Hudie as he gathers info for their missions through malware and social contacts.
• It Was a Gift: The reason he ends up with a Shakkoumon? The Angemon that Hudie's internet cafe clerk gifted him, DNA Digivolved with Chitose's own Ankylomon. Also serves as an example of Gameplay and Story Integration.
• Keet: Out of the mostly reserved Hudie, he's clearly the most energetic and excitable. He can also be very loud at times too-usually whenever he's passionately ranting about something.
• Nice Guy: Very friendly, upbeat and easy to be around. Notably, out of all of Hudie, he's the only one to warmly welcome Keisuke into the group immediately. Ryuji uses this characteristic to his advantage, by having Chitose take care of Hudie's public image and relations. Furthermore, his explicit appreciation of Ankylomon is what allows it to DNA Digivolve with Angemon to become the much stronger Shakkoumon.
• OOC Is Serious Business: He had the hints, but Keisuke confirms to him that something is very wrong with Ryuji. He’s later seen moping and depressed, which alarms Keisuke.
• Pretty Boy: He's very pretty, with soft facial features and longer hair, in contrast to the more rugged Ryuji and average Keisuke.
• Put on a Bus: He's out of commission for several chapters due to being attacked by an Eater. Luckily, he gets better and comes back for the final chapters of the story.
• "The Reason You Suck" Speech: Gives a lengthy one to Ryuji once the latter is momentarily free of Arkadiamon's influence. He doesn't skip a beat, telling Ryuji to stop feeling sorry for himself after all the crap he's done, namely: completely destroying Hudie's reputation, attacking countless Hackers and feeding their Digimon to Arkadiamon, destroying Hudie's building and center of operation, being a Jerkass to Erika, putting both Erika and Fei in the hospital, costing the woman Chitose loves her job, attacking Tokyo and other Japanese cities, being a danger to the public, and several other points. And this all comes after he's just recovered from the previously incurable EDEN syndrome.
• Screw This, I'm Outta Here: He is no longer able to accept Ryuji’s morally gray actions as a result of working with Kamishiro during chapters 10 and 11, and ditches Hudie for Nokia’s Rebels team, even if temporarily. He makes it very clear to Keisuke that he has a certain set of morals underneath his Casanova Wannabe tendencies- which may just be his way of coping with trauma.

Yu Nogi

Keisuke's best friend and the only student at his school who still supported him after his account was stolen.

• Ambiguously Gay: His devotion toward Keisuke closely resembles that of Fei's toward Yuuko and at one point has Keisuke take him to various date spots, which he insists is just so he can make suggestions to a friend who asked for dating advice. Keisuke silently notes that Yu has no other friends beyond himself, but tagged along happily anyway.
• Because You Were Nice to Me: A big reason why he's so...devoted to Keisuke. Keisuke stood up to Yu's bullies while ensuring he wasn't messed with subsequently. It's also established that Keisuke is the only real genuine friend that Yu has.
• Berserk Button: It's rather subtle at first, but it soon grows apparent that he does not like when Keisuke spends time with Hudie. Especially if it cuts into his own time with Keisuke.
• Big Damn Heroes: When it seems that the combined abilities of Keisuke, Ryuji and Chitose are not enough to break into the Eater-infested EDEN, Yu uses the connections he made as K to rally every other hacker faction. Together, they manage to allow the trio to break in.
• Cannot Spit It Out: He blatantly has strong feelings for Keisuke, despite them not being clearly identified as platonic or romantic. Either way, he's never able to share them entirely with Keisuke due to either freezing up or being interrupted by someone or something.
• Childhood Friends: With Keisuke. Yu remarks that they often played together during childhood, and Keisuke was the only kid who didn't make fun of Yu's girly appearance.
• Dramatic Irony: Yu is jealous that Keisuke joins Hudie to retrieve his account instead of relying on him. So as K, Yu manipulates Keisuke even further so he relies on him instead. However, his schemes only drive Keisuke even closer to Hudie. After the revelation, Keisuke even thanks him for making him joining Hudie.
• Dude Looks Like a Lady: He is regularly mistaken for a girl, and this in turn leads to him being constantly bullied.
• Earn Your Happy Ending: After the Cosmic Retcon, he ends up being a Hudie team member and is good friends with Keisuke, Ryuji, and Chitose.
• Easily Forgiven: After defeating him and freeing him from Matadormon's control, Keisuke bears no grudge against Yu despite all the manipulation. If anything, he's thankful that Yu allowed him to meet and join Hudie.
• Hero Worship: He idolizes Keisuke for having saved him, constantly, from bullies and does everything he can to assist him in getting his original account back despite his complete aversion toward hackers. This ends up getting deconstructed when we learn why he was the one who stole Keisuke's account in the first place, albeit with manipulation from a Digimon.
• Mistaken for Romance: During a story mission when Yu asks Keisuke out to test dating spots "for a friend", one NPC mistakes them for actually dating. To be fair, they are pretending to be a couple (complete with romantic dialogues) to get the feel of the dating spots, with Yu pretending to be the "boyfriend", but said NPC mistakes Yu as the "girlfriend" instead.
• Only Friend: Keisuke is this towards him. As such, when Yu asks Keisuke out to try dating spots "for a friend", at the end, Keisuke asks himself if Yu has other friend.
• Paper-Thin Disguise: During the climax, Yu rallies all hacker groups to help Hudie in the Nakano Underpass. However, instead of wearing his getup as K, he simply wears his usual outfit plus the mask, while hilariously trying to pass off as someone else. Not only Keisuke clearly doesn't buy it, but Date, already fed up by the laughable disguise attempt, quickly snatches his mask off.
• Pretty Boy: He may be even prettier than Chitose. The fact that he looks like a girl, has lilac hair, soft features, and frequently blushes only enhances this Trope.
• Rule of Symbolism: It's never explicitly stated what his partner is, but bringing him along in Domination Battles features a Gekomon/Whamon as the central party member. After Yu and Keisuke reconcile, it has Digivolved into a MarineAngemon, indicating how Yu has accepted himself for who he is and become a better person.
• Unwitting Pawn: At some point before the story, he fell under the influence of Matadormon. It used his loneliness and feelings for Keisuke to manipulate the boy into acting as his agent and commit crimes on both the physical and digital side.

K

A mysterious hacker who claims to be the guardian of EDEN, protecting it from those who would bring it to ruin.

• Ambiguously Human: Drops a few hints he might not be one at the start. Turns out he is, and any hints to the contrary were just a mysterious act. Except that he actually gets controlled by a Digimon, so this might qualify as accidental foreshadowing on his part.
• Arc Villain: Of Keisuke's search for whoever stole his account. He ultimately bears no relevance for the overarching plot of Hacker's Memory, but he gets significant focus halfway-through.
• Big Bad Friend: His real identity is Yu Nogi, with his Hero Worship pushed straight into Yandere territory by a Matadormon hiding in his mask.
• Cool Mask: Wears a white mask at all times. It's also an Evil Mask, being the hiding place of a Matadormon who's gradually driving him insane.
• Disc-One Final Boss: By the time Digimon start pouring into the real world, he becomes less dangerous after running into an Arcadiamon-possessed Ryuji and gets defeated earlier before Arcadiamon is.
• Dramatic Unmask: He sets one up to screw with you. In fact, he gets a few of these.
• Herald: Sets Keisuke on his path by passing him leads on who stole his account, while fashioning himself as a kind of Trickster Mentor. Though as most of those leads turn out to be straight-up lies, Keisuke quickly stops trusting him in favor of other hacker allies like Hudie.
• Inexplicably Awesome: The powers he starts showing later on - controlling his Digimon remotely, puppeteering other accounts, creating a cage around you that blocks logouts. Erika notes that it's very odd for someone with such powers to show up out of nowhere so suddenly.
• Line-of-Sight Name: The hacker who calls himself K turns out to be a regular at the K Cafe.
• Red and Black and Evil All Over: Wears predominantly red and black clothes, in contrast to Keisuke's cool blue. As for the "Evil" part, his actions increasingly become antagonistic to the player as the game goes on. Right down to ultimately being the culprit behind stealing Keisuke's account, siccing a SkullSatamon on a defenseless Keisuke, trapping him on EDEN in a manner similar to EDEN Syndrome and ultimately being the reason Keisuke has to fight an empowered Matardormon. And of course, this doesn't even count the other crimes he's done throughout EDEN. To hammer this further, his own server is even colored as such.
• Sanity Slippage: After the entirety of Tokyo is swallowed by a Digital Shift and hackers gain the power to alter the "real" world, he turns maniacal, starts rampaging with his Digimon, and encourages Keisuke to do the same. Of course before that, Matadormon was already twisting him. And by the end, Matadormon itself has become insane from the feedback loop.
• The Man Behind the Man: Partway through the plot, he claims to be the real leader of the Demons, with Jimmy KEN as a front man. If this wasn't true originally, he does take over after Jimmy KEN's final defeat.
• Unwitting Instigator of Doom: Had he not had advised Keisuke to go after Youji Shiga, Keisuke would not have met Ryuji and joined Hudie subsequently (thus keeping him away from spending time with K/Yu, driving the latter into a dangerously obsessive desire to spend more time with him).
• Yandere: He desires little more than to be Keisuke's best friend and partner. And he will do anything to accomplish that goal. He was the one to steal Keisuke's account and proceeds to send him on a wild goose chase consisting of other accounts he's hacked and controls remotely in order to make Keisuke rely on him, failing to consider that "K" is quickly proven to be untrustworthy while Yu is presented as timid and completely averse to interacting with hackers, which only serves to drive Keisuke to Hudie. When the world undergoes a Digital Shift he snaps completely, deciding he'll just become Keisuke as he can just bring the account avatar onto himself in the real world.

Arcadiamon (Arkadimon)

A mysterious and very powerful Digimon that serves as one of the primary threats in Hacker's Memory.

• Eldritch Abomination: One of the earliest examples in the franchise and you'd be forgiven for thinking that this thing couldn't possibly be a Digimon considering just how different it acts and looks compared to other Digimon. It's Ultra form in particular is ungodly in both appearance and power.
• Generic Doomsday Villain: It doesn't have many aspirations beyond wanting to destroy and consume everything. Not to mention that Arcadiamon has absolutely nothing to do with the Eaters, K, or the Royal Knights. Arcadiamon is in its own separate rampage.
• Hopeless Boss Fight: The initial encounter against its Ultra form, primarily for one reason: it immediately sets up its Ones And Zeroes ability at the start of the fight, which visibly degrades the impact of any attack towards it into its namesake (complete with appropriately reducing their damage to either 1 point or simply nothing). Until Erika erodes its defenses with her Eater Bits, the best you can do is fruitlessly bash into it until it nukes your entire party with God Matrix.
• Horror Hunger: Its main motivation is to consume digital lifeform to become stronger, as it can be seen eating many Digimon and trashing many hackers who get in its way.
• Kaiju: Its Ultra form is humongous, dwarfing the bridge Keisuke and Erika stand on while fighting it.
• Knight of Cerebus: When it finally gets involved, things go downhill very quickly. Ryuji becomes its thrall, dozens of Digimon and hackers fall prey to its hunger, Hudie's workplace is demolished, and Erika is eventually assimilated by the Eater Bits she created in order to fight it.
• Sealed Evil in a Can: The core of Under Zero that was protected by the Knightmon that beat down Jude was this thing's prison. Poor Ryuji ends up freeing it during his Heroic BSoD.
• Olympus Mons: Any Digimon that reaches the Mega or Ultra levels qualify, but Arcadiamon deserves special mention as the first Digimon to ever achieve the latter form, and it has the power to back it up.

A group of Digimon who serve under the Digital World's "god", King Drasil, and carry out its will. However, they're under dispute as to what King Drasil's will actually is; one faction believes that it wants to destroy the human world and Kill All Humans, while the other believes otherwise. As a result, the conflict between them becomes a major theme of the latter half of the game.

Although Digimon franchise lore establishes that the group was founded by Imperialdramon Paladin Mode, he himself does not appear in the plot, and shows up only as an Optional Boss in the Royal Knights evolution-unlocking questline.

Omnimon/Agumon and Gabumon (Omegamon)

Nokia's partner(s), who initially appear to her as Agumon and Gabumon. Like the other Digimon in EDEN, they hail from the Digital World, but initially have amnesia as to why they came to EDEN. Nokia's strong will and determination allows them to digivolve back into Omnimon and recover his true purpose: save the Digital World from Eaters.

• Amnesiac Hero: A big spoiler and a key part to what he is. He initially came to investigate the cause and origin of Eaters, as well as to seek a diplomatic solution in dealing with the threat (rather than annihilating the human world). As Omnimon was too large data-wise to exist at the time of his arrival, he split into the much smaller Agumon and Gabumon. In the process, they lost their memory of both their existence and mission, leading to their less-than-mature introduction (and lack of knowledge) at the game's beginning.
• Angel Unaware: Albeit one that happened by accident rather than any intentional Secret Test of Character. When Omnimon crossed the boundary between the two worlds by splitting into Agumon and Gabumon, this inadvertently caused them to lose their memories, leaving them all but helpless against the hackers prowling Kowloon. It's at their most vulnerable that Nokia takes them in and befriends them before going on to fight for Digimon rights, all without any knowledge whatsoever that she's partnered with one of the greatest of heroes and highest of authority figures among all Digimon. While Omnimon had already been foremost among the Royal Knights who questioned whether destroying humanity was necessary or even Yggdrasil's intention, the actions of Nokia and her other human friends cemented in his mind that humanity did not deserve to be wiped out, and spends the rest of the game fighting as much for the sake of their race as he would his own.
• Big Good: In a literal sense as well. Once the Royal Knight arc kicks off, he immediately establishes himself as a powerful ally for Aiba, Nokia, and such. He's the initial driving force regarding recruiting other Royal Knights towards humanity's cause, as well the as the most explicitly heroic in doing so.
• Big Eater: Agumon and Gabumon, to the point where they run Nokia's wallet dry trying to get them food.
• Curb-Stomp Battle: As Omnimon, he dishes one out soundly to Fei after DNA Digivolving at Under Zero. It's even more notable because her party consisted of three Mega level Digimon, one even having a type advantage over Omnimon.
• The Ditz: Even as Omnimon, it shows brief glimpses of its generic lack of intelligence whenever going along with Nokia's insane ideas.
• Expy: Agumon and Gabumon are clearly based on the ones from Digimon Adventure, having the exact same personalities as them. Their fusion into Omnimon is also based on the one from Our War Game.
• A Form You Are Comfortable With: After regaining the ability to become Omnimon, it's the form he chooses to spend the most time in whenever applicable. Oddly enough, the only Digivolution stages Omnimon is never seen in, in both Cyber Sleuth and Hacker's Memory, are MetalGreymon and WereGarurumon.
• Fusion Dance: He functions as one harmonious entity as Omnimon, but has distinct personalities as Agumon and Gabumon.
• Go Fetch: When attempting to stop Nokia from approaching Under Zero, Arata distracts WarGreymon and MetalGarurumon by...throwing a large chunk of meat for them to chase after. It works surprisingly well.
• Position of Literal Power: He's a Royal Knight for a reason. As Agumon and Gabumon, he's not particularly strong or intimidating. After regaining his true form however, his power increases substantially. This is best shown with how easily he defeats Fei's party while simultaneously worrying the usually confident Yuugo-two of the most formidable and strongest hackers in EDEN at that time.
• Sleep-Mode Size: The reason they appear as Agumon and Gabumon. Omnimon was forced to degenerate to Rookie form in the process of crossing over from the Digital World to EDEN; he didn't expect to lose his memories in the process. After becoming Omnimon, he still chooses to revert to Agumon and Gabumon occasionally in order to save energy for when the situation needs it.
• What Would X Do?: Briefly contemplates what Nokia would do when wondering whether to take the risk of destroying the Digital Line point, as there wasn't any way to be sure of what would happen as a result. He concludes that she'd charge in before thinking and does so without hesitation.

Crusadermon (LordKnightmon)

A dramatic and flamboyant Royal Knight obsessed with gracefulness and beauty. It's one of the more vocal members of the Kill All Humans camp among the Royal Knights. Having inhabited Rie Kishibe's body in the hopes of infiltrating the human world, she's responsible for Satoru Kamishiro's murder and most of the main plot.

• Ambiguous Gender: Crusadermon had traditionally been considered a very effeminate male Digimon in the Japanese versions of previous works, but in this game it possesses the female Rie Kishibe and has female mannerisms. In the Japanese version of this game, Crusadermon's voice actress is female, and it's hard to be picky about human mediums when you can only pick from conveniently comatose bodies. Furthermore, Crusadermon's Japanese speech pattern is gender neutral, but not as feminine as Kishibe's. Additionally, they specifically refer to themselves as the "king of Knightmon" in the Japanese scripts. Meanwhile, the localization refers to her as a female the exact same way the dub did for Digimon Frontier's "Crusadermon" before, unlike how Digimon Data Squad "Loadknightmon" was treated and voiced as male.
• Berserk Button: Having her pride insulted, or just being insulted in general, by anything she deems beneath her (as Yuuko found out in their final confrontation). She also absolutely detests humanity and anyone that sympathizes with them.
• The Computer Is a Cheating Bastard: Her version of Fist of Athena is capable of inflicting Instant Death on the recipient; any Crusadermon a player raises can only stun others with the same move.
• Dying as Yourself: Inverted; Crusadermon starts spouting out lines as Rie while dying as a way of taunting Yuuko.
• Dying Declaration of Hate: With her last breath she responds to Yuuko's "The Reason You Suck" Speech with this, telling her that she always abhorred her.
• Failed a Spot Check: Averted. When Aiba, Nokia, and Yuuko confront her in Odaiba, she realizes that she never formally did her Dramatic Unmask in front of Yuuko, who was incapacitated at the time. Cue her doing it again, Large Ham and all.
• Glass Cannon: While every Royal Knight boss has quite the pool of HP, Crusadermon's is notably lower (along with her defenses) than her peers. The trade-off for that though is that she commands a highly damaging piercing move, which none of the other Royal Knights (outside of Alphamon Ouryuken, Gallantmon Crimson Mode, and Omnimon) possess.
• The Heavy: While the Eaters and Leopardmon are the ultimate villains who must be stopped, Crusadermon is directly responsible for most of the events of the story, from corrupting Kamishiro from the inside to summoning the Royal Knights to the human world.
• Humanity Is Infectious: Deconstructed. Crusadermon learned darker emotions like toxic ambition and taking satisfaction in crushing those weaker than oneself from inhabiting Kishibe's body. To the frustration of all, she takes to these emotions and feelings very well.
• I Regret Nothing: Crusadermon dies saying she has no remorse whatsoever for the horrible things she did.
• It's Personal with the Dragon: While subservient to Leopardmon, it's ultimately Crusadermon that the cast has the most personal animosity towards, given most of the suffering they'd experienced up until then was Crusadermon's doing. It's especially personal with Yuuko after Crusadermon reveals that she killed her father (and that he did not, in fact, die from his alleged suicide).
• Kill All Humans: Loathes humanity particularly more than the other Royal Knight and is especially fond of the idea.
• Large Ham: The most boisterous and grandiose of the Royal Knights. While the rest of her faction is more subdued with their distaste for humanity and their goal of its destruction, Crusadermon relishes nearly every moment she gets on-screen passionately, whether she's discussing her contempt for humans, pride as a Royal Knight, etc.
• Let's Get Dangerous!: She finally snaps to the point of wanting to settle things personally with the heroes after Yuuko declares how Crusadermon will die by her hand in the name of revenge for her father. Thus, unlike her previous fights, she commits to crushing the party by busting out her signature moves during the fight (until that point, she had only resigned to wasting turns with insults and basic moves). One of the signature moves she unleashes is her Fist of Athena, a piercing move which is capable of one-shotting whoever she hits with it. She also buffs her attack stat to ridiculous levels during the fight, meaning that if her Fist of Athena doesn't one-shot through its effect, it'll end up doing that anyway by virtue of sheer power.
• The Mind Is a Plaything of the Body: Originally didn't plan to kill Satoru Kamishiro; his murder came about due to the combination of Rie Kishibe's ambition and negative feelings along with Crusadermon's hatred of humanity and bloodlust. The whole "hatred of humanity" thing wasn't really helped by the experience of Rie's particularly nastier emotions.
• Noblewoman's Laugh: Does this several times throughout her appearances, usually either when she believes she has the upper hand in a situation or when she's simply mocking her opposition. The "nobility" part comes from her Royal Knight status.
• Recurring Boss: The player clashes with her the most of any Royal Knight during the story, for a grand total of four times. The first and third fights are interrupted, while the second fight ends up only being with a weaker Crusadermon copy. It isn't until the fourth and final battle that the player is able to delete her for good...but not without dealing with her newly incited Let's Get Dangerous! attitude.
• Revenge Before Reason: While the other Royal Knights of her faction sincerely see exterminating humanity as a way to save their own world, Crusadermon is hellbent on humanity being destroyed and is the most openly callous with the notion; if she can make any human's experience needlessly painful, she'll do it. There's barely a line of dialogue she has when she's not insulting humanity in some way, shape, or form. It gets so bad, that even the usually-neutral Alphamon ends up calling her out on her behavior. This extends to her hatred of the main group. She knows that they're the ones at fault for the Eater situation 8 years ago, but sadistically leads them to the truth where they regain their memories of the events of their childhood in the most traumatizing manner before so she can lay out their "sins" before going in for the kill.
• Sadist: Very much so. Half of her dialogue is of the pleasure she gets from watching humanity suffer (or when she crushes her enemies), while the other half could very well be how much she hates humanity and wants it to suffer. While the spread of Eden Syndrome wasn't a goal of hers, she smugly confides to Yuuko that she enjoyed its horrific spread nonetheless.
• Something about a Rose: Her Flower Motif is that of a rose, as she brandishes one during her formal introduction and she bursts into a flurry of rose petals when she's eventually killed.
• What the Hell, Hero?: Alphamon gives a succinct one to her during Crusadermon's final showdown with Aiba, Yuuko, and Nokia. After she, again, monologues on the sheer pleasure she's derived from Kishibe's negative feelings, Alphamon criticizes her that such talk and mentality doesn't befit the nature and reputation of a Royal Knight.
• You Killed My Father: Killed Yuuko's father. It's debatable as to how much of the desire is attributed to Rie or Crusadermon, though.

Examon

A huge behemoth of a Royal Knight who ends up slightly corroded by Eater on his way out and ends up rampaging around. As he requires a huge amount of energy to fight, Crusadermon has to supply him with it.

• Achilles' Heel: Pointed out by Kyoko, he needs a very large source of power to maintain his form in the human world, unlike his peers. Had the Digital Gate remained open, this wouldn't be an issue. Thus, Crusadermon focuses Digital Wave energy from Eden to facilitate his energy needs, with the energy source being guarded by Craniamon. Once Suedou is able to stop it, the heroes are able to actually damage and, subsequently, defeat Examon.
• The Brute: Examon's titanic size and immense power makes him a huge threat towards humanity, but his lack of thoughts (and characterization) reduces his role to that of an occasional rampaging beast.
• Flying Brick: For a good chunk of the Royal Knight arc, this is exactly what he is. The heroes ignore him initially due to his power; when they finally attempt to face him, he trounces Omnimon, Gallantmon, Magnamon, Jesmon, UlforceVeedramon, Gaiomon, and Aiba's entire Digimon party before eventually fleeing to terrorize Tokyo instead. None of them are able to do anything to slow him down.
• The Juggernaut: When supplied with enough energy to fight, he's nigh unstoppable. To put things into perspective, it took a combined assault from multiple Mega level Digimon including 5 of his fellow Royal Knights (Omnimon, Gallantmon, Magnamon, UlforceVeedramon and Jesmon) just to drive him away temporarily, and this Examon is already injured by Eaters even before he enters the human world. The entire plot of chapter 16 involved finding a way to cut off his supply of energy so he could be further weakened to a point where he could actually be defeated.
• Kaiju: Examon's size is quite comparable to a skyscraper.
• Mighty Glacier: His huge size comes at the cost of requiring tons of energy to function properly, and Aiba and Arata manage to defeat him only when his energy supply's been cut off.
• Person of Mass Destruction: He's described as the most powerful of the Royal Knights when it comes to raw power. His introduction cutscene shows him sloppily destroying a skyscraper upon emerging from the Digital Gate.
• The Voiceless: He never does anything but roar, despite having a proper, credited voice actor; it's unclear whether his situation has cut off his mental faculties. He is noted to be bugged by all the Eater infections.
• Worf Had the Flu: Examon is never fought at full strength. He has his data heavily corroded by Eaters, loses the bulk of his power when he attempts to emerge in the Material World, and is never able to gather the additional energy needed to recover from the sheer damage he's taken. Despite all of that, he's only fought with Aiba having several allied Royal Knights alongside them and still puts up a decent fight, showing that the reputation of his power was not exaggerated. Had he been allowed to fully recover, he may well have been unstoppable.

Leopardmon (Duftmon)

The leader of the Kill All Humans camp among the Royal Knights, who adheres solidly to what he believes is King Drasil's will and is the creator of the plan to annihilate the human world.

• Big Bad: Or at least among the Royal Knights. Likewise, he ends up being one of the four that are unable to be convinced, and is the last to be defeated.
• Large Ham: Kind of hard not to be when you're voiced by Norio Wakamoto who is almost always hammy regardless of the role.
• Multiform Balance: Notably averts this; despite the fact you can have your own Leopardmon that can change between two forms, the plot-important one never displays this ability.
• One-Winged Angel: Attempts to absorb enough energy to digivolve into something exceeding even Examon in power. Subverted, as Nokia and the hackers manage to Reverse the Polarity and drain him instead.
• Smug Snake: A mistranslated line has him saying that he's the most powerful of the Royal Knights, making him this trope. His original line is more grounded in reality, where he calls himself a holy knight and the strongest lion.
• Villainous Breakdown: Loses it something fierce upon his defeat: he crows that his defeat must mean King Drasil has condemned both the Digital and Human worlds to destruction, and dies cackling like a lunatic.

Dynasmon

A member of the Kill All Humans faction, and therefore classified as one impossible to convince to take the side of humanity. He believes strictly in following Leopardmon's and what he believes to be King Drasil's will, and that his own don't matter when it comes to his own actions.

• Affably Evil: For a member of the Kill All Humans faction among the Royal Knights, he carries himself with a almost knightly attitude and is one of the least vitriolic enemies towards our heroes, always speaking towards them in a very formal and respectful way. His Undying Loyalty towards King Drasil that supersedes everything as far as he's concerned is what truly makes him an antagonistic force here.
• Bright Is Not Good: He's a predominately white armor-cladded Digimon, but he fights squarely for the extinction of the human race.
• Cast from Hit Points: His main fighting style. His primary offensive technique is Wyvern's Breath, which does a lot of damage to the player's party, at the cost of 20% of the collective damage done coming out of Dynasmon's own HP. To make up for the disparity, he has a couple of other moves that restore his HP based on or equal to damage he inflicts with them.
• Die Laughing: Dies claiming that he's doing so with his own beliefs without any remorse or second thoughts about his actions.
• Flat Character: While the Royal Knights vary in their characterization, barring the somewhat eroded Examon, Dynasmon has the blandest personality of the group. Unlike Craniamon, he doesn't eventually question his role in earth's destruction, nor does he scheme like Leopardmon or Crusadermon. He simply supports his faction as obedient muscle.
• Hoist by His Own Petard: This is how his battles can potentially go with him, depending on how savvy the player is. Dynasmon often does considerable recoil damage with his Wyvern's Breath attack. Repeated usage of it can have him dealing more damage to himself rather than the player (assuming the player can survive and heal through the onslaught). It gets so bad that he can even KO himself.
• Purple Is Powerful: Very much so, as his Wyvern's Breath attack is capable of wiping out entire teams. Heaven help you if your party is is made out of Vaccines primarily.
• Undying Loyalty: To the point where he doesn't consider his opinion on humanity being particularly important as long as he carries out his orders. His own "beliefs" are simply those of his masters, leading into what he considers his "sense of justice".

Gallantmon (Dukemon)

Omnimon's friend, who, despite not entirely having trust in humanity, doesn't believe that it should be annihilated. Thus, he assists the protagonists in fighting off the Kill All Humans faction and helping them gather more allies among the Royal Knights.

• Big Damn Heroes: He pulls this in Akihabara, where, in his debut, he shows up to even the score for Omnimon, who was about to be ganged up on by Leopardmon and Dynasmon.
• Dark Is Not Evil: Despite his royal and primarily white appearance, he's a Virus type Digimon; he's the only other Virus-typed Royal Knight aside from Crusadermon. Despite that and the evil connotation usually associated with the type, he's an ally for humanity's survival and opposes Crusadermon's faction.
• Heel–Face Door-Slam: A minor one, towards Arata after the latter is rescued from Eater Adam. He still supports Aiba, but he makes it clear he and Arata are nowhere near on friendly terms.
• Jerkass Has a Point: His explicit opposition against Arata is made to come across this way, after Arata becomes part Eater, in light of the much more empathetic Aiba. While he has chosen to fight for humanity, he isn't going to allow a human to freely roam about after willingly merging with the Eldritch Abomination that is destroying his own world and people. Left unchecked, he's correct in that Arata can become a threat to both humanity and Digimon...which is exactly what happens with the creation of Eater Adam.
• My Greatest Failure: Not being able to stop the Eaters in time that led to the demise of his compatriots and eventually Arata becoming an Eater.
• Not Quite Dead: After Aiba has defeated Eater Adam, Arata is not only separated from the Eater, but also from Gallantmon whom he had devoured. However, Gallantmon is too weakened to help them out for the final mission.
• OOC Is Serious Business: Noted by Omnimon, he swore to never kill a human but went after Arata, worried about what he would become, though it was rather heavily implied that Gallantmon simply didn't see Arata as human any more after he'd merged with an Eater.
• Vocal Dissonance: When he's introduced, he is said to have a "screechy voice", but his actual voice sounds anything but screechy. The description fits more in line with Masako Nozawa's performance in previous installments and it may be possible that she was originally intended to "reprise" her role as Dukemon, but couldn't.
• The Worf Effect: Although he's played up as powerful by the narrative, he doesn't do much in-game, and he's primarily known by fans of the franchise to be an especially strong Digimon (particularly enhanced by his large role in Digimon Tamers). Thus, when he fails to lay a scratch on Arata and is eventually defeated and "eaten" by him, it's meant to show off how freakishly powerful Arata has become.
• Well-Intentioned Extremist: He's staunchly on the side of humanity, but has no qualms in immediately attempting to eradicate Arata after the latter willingly chooses to merge with an Eater.
• Worf Had the Flu: His actual defeat came after the first battle with Examon, where he was noticeably tired and hurt to the point Magnamon was worried about him.

Magnamon

A serious-minded and compassionate Royal Knight who's not sure which side to take in the schism between them. His point of concern is over two young Digimon he'd seen be separated; eventually, the two returning to him and putting in good words for Nokia convinces him to take the case for humanity.

• Because You Were Nice to Me: Rather, because Aiba, Nokia, and Date were nice to his friends. Due to their kindness to Lopmon and Tokomon, Magnamon ultimately decides to fight for humanity, rather than assist the other Royal Knights in destroying it.
• Blue Is Heroic: His primary color scheme is a heroic gold while his secondary color is an equally heroic blue. The imagery paves way for his eventual allegiance.
• Chekhov's Gun: The mission of helping Lopmon find his Digimon pal seems inconsequential and routine for Kuremi's agency, at first. Turns out, that doing so later secures Magnamon as an ally for Aiba and his friends, as well as humanity as a whole.
• Dishing Out Dirt: His attribute nature is Earth, interestingly.
• Friend to All Living Things: Or at least to all Digimon, considering that his main worry is over two Rookie and In-Training Digimon. In regards to humanity, before Nokia returns them to him, he doesn't entirely know if they're good or not, and sides with them as soon as he feels there's a good case for them.
• Grey-and-Gray Morality: Has this stance on the Eater situation, initially. He understands that humanity is responsible for the creation of the Eaters as well as the consequential destruction of the Digital World. It doesn't help that he's personally witnessed hackers abusing Digimon, in a manner akin to slavery, after his arrival in the human world. However, he's also aware that destroying another world for the sake of one's own isn't exactly morally correct or righteous—that would essentially be murdering millions of innocent lives. After Aiba's interactions, insistence from Omnimon, and learning about the newfound safety of his weaker friends, Magnamon ultimately chooses to forgo destroying the human world; he now fights against its destruction while trying to find a peaceful compromise for the situation.
• Light 'em Up: One of his signature moves, Shining Gold Solar Storm, evokes this.
• Pint-Sized Powerhouse: Most Mega level Digimon are several stories in height. The same holds true for the Royal Knights, especially in Examon's case. Magnamon is roughly the size of a human adult yet they're equal in power and one of the highest ranking Royal Knights in this iteration.
• Rank Scales with Asskicking: According to Kyoko, he ranks rather high among the Royal Knights. More specifically, he's a "leader" within their ranks.
• Stone Wall: He's a defensive Digimon by nature: his highest stat is defense, one of his signature moves always increases his defense by 10%, and his signature skill has a 10% chance of reducing an opponent's attack damage by 75%.

Gankoomon

A Royal Knight who's less interested in the whole schism or his opinion on humanity as a whole as he is in grooming his protégé, Hackmon, into becoming a Royal Knight. Aiba ends up meeting up with him in Ueno and negotiating an arrangement in that he'll assist humanity if they train Hackmon - which is easier said than done when Hackmon doesn't seem to want the help at all.

• Achilles in His Tent: Gankoomon has no desire to help with Leopardmon's plans against humanity, but doesn't bother to help the heroes combat it. His only concern is Hackmon's training.
• Badass Arm-Fold: One of his default poses.
• Hot-Blooded: His way of catching up with his old friend BanchoLeomon is...to start a spar with him. In addition, what gets him to initially listen to your request to help humanity is the fact he "likes your spirit".
• NO INDOOR VOICE: Gankoomon tends to shout a lot.
• Not in This for Your Revolution: At all. Even Jesmon takes a stance by aiding Aiba against Leopardmon's Kill All Humans faction. Gankoomon does not lift a finger for either of the Royal Knight groups; his only care being to ensure Hackmon developed into a Royal Knight. Even with that achieved, he still isn't seen doing anything for anyone for the the rest of the game.
• Sink-or-Swim Mentor: A particularly harsh mentor to Hackmon, as his final "test" to Hackmon is to defeat a BanchoLeomon. Ultimately, he does have Hackmon's well-being in mind.

Jesmon/Hackmon

Gankoomon's devoted student in training to become a Royal Knight, who's lately been frustrated from the feeling of "something" restraining him. After coming to an epiphany about what it means to become a Royal Knight and defeating BanchoLeomon, he evolves into Jesmon, the thirteenth Royal Knight.

• Declaration of Protection: The first step to Hackmon's epiphany is realizing that the purpose of a Royal Knight is to protect others, and thus he declares that he'll protect Aiba when faced with BanchoLeomon.
• Don't You Dare Pity Me!: His initial anger against Gankoomon and Aiba comes from the fact that he believes Gankoomon is assigning Aiba to train him from believing that he's so weak that he has to train with a human, of all things.
• Fire-Forged Friends: With Aiba. While he initially detested their presence, he comes to appreciate them by the end of their battle with BanchoLeomon. So much so, that he pledges his loyalty to Aiba's cause and fights against Leopardmon's faction.
• Goggles Do Nothing: Both as Hackmon and Jesmon he has goggles on his hood. These goggles in particular don't even seem possible for him to wear in either form, much less serve any purpose beyond referencing the series' preference for them.
• Took a Level in Badass: Hackmon manages to complete his training thanks to Aiba's assistance, and he becomes the Royal Knight Jesmon.

Kentaurosmon (Sleipmon)

A Royal Knight who's not interested in doing much but destroying everything, and whose speed is so overwhelming that only the Royal Knight UlforceVeedramon can match him in it.

• Adaptational Villainy: This is the first time we actually get to see a Kentaurosmon being on the side of the antagonists. His case is especially notable; while Leopardmon, Crusadermon, Dynasmon and Craniamon had been antagonists in previous installments, Kentaurosmon was the only one of the nine Royal Knights that showed up in Digimon Data Squad who did not oppose humanity and instead fought with them together against his fellow comrades. Even in this case, this Kentaurosmon is mainly influenced by the humans' negativity that is infesting EDEN, and unlike the other antagonistic Royal Knights, Kentaurosmon can be reasoned with.
• Anti-Villain: Kentaurosmon's reason for opposing humanity is because of the being affected by their negative energy.
• Automatic Crossbows: While the rest of the Royal Knights either wield a sword (Omnimon, Crusadermon, Jesmon, Alphamon, Leopardmon, Imperialdramon Paladin Mode, and UlforceVeedramon), a lance (Gallantmon, Craniamon, and Examon) or use their bare hands (Magnamon, Dynasmon, and Gankoomon), Kentaurosmon stands out with its long-range crossbow.
• Curiosity Causes Conversion: Seeing the human world for himself is what causes him to switch from the "destroy humanity" faction to the "humans deserve life" one.
• Did You Just Have Tea With Cthulhu: After defeating him, what convinces him to cooperate is Rina taking him with her on a tour of the town.
• Faster Than They Look: Kentaurosmon is certainly bulky what with his armor, weaponry, and large six-legged frame. In spite of that, he's the second fastest Royal Knight bar UlforceVeedramon. It's also an example of Gameplay and Story Integration as speed is Kentaurosmon's highest stat and he keeps boosting said stat in battle.
• Good Is Not Nice: He's a Holy Vaccine Digimon, yet openly antagonistic and supportive of the human world's destruction. He gets better though, but even then that's only putting it mildly.
• Heel–Face Turn: After being defeated by Aiba and Rina and having his life spared by the latter, she and Kentaurosmon go on a tour to explore the world so he can finally have a clear opinion about humanity. After some sightseeing and visiting multiple restaurants, he finally joins the heroes after Duftmon and his entire faction have been defeated.
• Humanity Is Infectious: This is the apparent reason for his terrorizing Eden before Aiba and UlforceVeedramon stop him. Upon coming to earth, specifically the cyberverse of Eden, he was greatly affected by humanity's negativity—so much so, that it caused his own negative feelings to become enhanced to the point of violent, explicit destruction. This swings the opposite direction, too, as seen in Hacker's Memory; during a case that Rina opens up, for him to have a tour of the restaurants of the area, Kentaurosmon starts out surly and unwilling to eat any food. Rina's boisterousness, however, quickly riles up his competitive side, and he not only starts engaging with the event but actually enjoys the food he has by their second restaurant.
• An Ice Person: His signature move, Odin's Breath, involves using his Niflheimr to lower the temperature of the immediate climate while generating a blizzard. His other signature move is simply called Bifrost. This also applies to his character as he's very cold and distant, even after socializing with Rina and V.V.
• Lightning Bruiser: When Aiba initially encounters him, his speed is so overwhelming that they're unable to do anything; because only UlforceVeedramon can match up to him, and UlforceVeedramon is currently trapped between dimensions, this forces Aiba to hop to an Alternate Universe and recruit Veevee. His armor is the second toughest among the Royal Knights, and he has the strength that surpasses that of many other Mega Digimon.
• Not So Above It All: After having visited many restaurant with Rina, he asks her if they can finally do something different. He's annoyed by her foolishness, but in the end, he does admit that he's actually hungry. In Hacker's Memory, the case that Rina opened up has him start out unwilling to engage with anything, but her stealing his steak in a restaurant (which at that point he had petulantly been stating he didn't want) riles him up enough that he retaliates by stealing her and VeeVee's steaks. After this results in a fight that gets them all thrown out of their restaurant, the whole experience has helped him get into the spirit of things, up to the point of him eagerly racing VeeVee, Rina and Keisuke for the right to write a review for a sweets shop.
• Silent Snarker: You can meet him and Rina throughout several locations as you progress through the story. Most of the dialogue is about them sightseeing and mostly visiting different restaurants. Kentaurosmon is either silent or goes "Hmpf". It isn't until Akihabara that he finally points out that they haven't been doing anything different.

Veevee (V.V.) the UlforceVeedramon (UlforceV-dramon)

Rina's partner Digimon, an UlforceVeedramon from an Alternate Universe recruited because the main universe's UlforceVeedramon got stuck between dimensions. He initially appears as a Veemon after having his power stolen by Barbamon, but is returned to his UlforceVeedramon form after Aiba recovers it and joins the fight to save humanity.

• Blue Is Heroic: His body is covered with Blue Digizoid, which is a type of metal considered rare even amongst the already valuable Chrome Digizoids. His experience as Rina's partner makes him appreciate humanity more. As such, he proves to be more heroic than most of the Royal Knights. This trope is also shared with Magnamon, a fellow blue-colored Royal Knight who also happens to be another Veemon's evolution.
• Boke and Tsukkomi Routine: He's the tsukkomi to Rina's boke.
• Hard Work Hardly Works: Averted. It's because of his hard work that Veevee was able to achieve the UlforceVeedramon form. Prior to Aiba's arrival, Rina was resigned to having to start from scratch again in leveling up to re-attain that power.
• Lightning Bruiser: Because his speed can match up with Kentaurosmon, he's the only one able to help Aiba fight against him.
• Like Brother and Sister: Acts as sort of a responsible brother to Rina.
• Nice Guy: Very much so, with his kind and sunny disposition. As Rina's partner, he already has a lot of experience with and appreciation for humanity that many of the other Royal Knights lack. Furthermore, he willingly agrees to leave both his partner and his world behind to cross dimensions and aid a stranger in fighting an Eldritch Abomination as well as parallel world versions of his brotherhood, with the possibility that he may not survive the endeavors.
• Noodle Incident: It's never explained how or why Barbamon was able to steal a Digivolution stage from Veevee. Let alone why Barbamon was in a Digital Shift and why there was a Digital Shift in Rina's world. Nothing else comes of the situation either after Veevee kills him with Aiba's assistance.
• Replacement Goldfish: To the original UlforceVeedramon. The fate of the original UlforceVeedramon never gets any closure, and the rest of the Royal Knights - particularly Alphamon - all but give up on saving UlforceVeedramon. Hacker's Memory eventually explains that the original got lost between dimensions on the journey to Earth and attempting to rescue it would only result in death.
• Super-Speed: The fastest of the Royal Knights. It's his speed that's required to put a stop to Kentaurosmon's rampage. When the fight happens proper, he's even shown boosting the speed of Aiba's party to keep up in the battle.

Craniamon (Craniummon)

A member of the Kill All Humans faction, classified as one impossible to convince to take the side of humanity. He is tasked by Crusadermon with supplying energy to Examon, which would therefore create Examon's Achilles' Heel.

• Affably Evil: In his last moments, he admits that he's harbored second thoughts about hating humanity in the same way that Leopardmon and Crusadermon do and following King Drasil's orders, not wanting to believe that he was being disloyal.
• Anti-Villain: His personal mission in Hacker's Memory shows that among the Kill All Humans faction of The Royal Knights, he's by far the least bloodthirsty and blindly loyal to said doctrine. While gruff and abrasive, he's far more interested in saving UlforceVeedramon, works together well enough with Keisuke and the only reasons he attacks the human is because at first he he thinks both him and Alphamon are callously abandoning UlforceVeedramon to his fate without a care in the world instead of trying to save him from deletion. At the end of the mission, Craniamon even musses to himself that he does not quite understand this whole Kill All Humans mission his faction is going for, making it clear that senseless violence does not particularly please him and showing hesitation in following said brutal path, right until King Drasil sends him a message to enforce his will and his Undying Loyalty only makes him double down in his ways.
• Berserk Button: While willing to humor Suedou's questioning, Craniamon becomes furious and goes for the kill when Suedou mocks his fealty to King Drasil as having no will.
• Extreme Doormat: He's only against humanity because of his loyalty towards his lord, and Suedou calls him out for Craniamon's lack of free will and thoughts. He does end up shaken by Suedou's words, has second thoughts about his loyalty and is then severely weakened by his doubt. He eventually gets a little bit interested in humans when he dies.
• Good Is Not Nice: A trait shared with his faction. Despite his intimidating appearance, he's actually a Vaccine type Digimon. However, he willingly follows the kill-all-humans faction within the Royal Knights schism.
• Graceful Loser: Upon being defeated, he expresses surprise at the result but ultimately resigns without any further protest or resentment, unlike his peers. He even comments on how Aiba and Yuuko defeated him soundly.
• Honor Before Reason: Despite knowing that attempting to venture further into the Digital Space UlforceVeedramon was trapped in would be a suicide mission, he insisted on going in to find his lost comrade. This forces Keisuke and Alphamon to knock him out to prevent him from throwing his life away for nothing.
• Out of Focus: Gets the least amount of screen time of all the Royal Knights in the original game as he's killed at the same time he was formally introduced. Perhaps as a result of this, he is the focus of a mandatory case in Hacker's Memory that delves a bit more into his sense of honor and conflicting feelings toward humans.
• The Worf Effect: He's the first of the Royal Knights to actually be killed or deleted. This comes after several clashes the player has with them, in which they remain alive despite fierce battles to the contrary. Craniamon's defeat also comes directly after the first battle with Examon, where the insinuation is that everyone that participated in that fight (including Aiba and Yuuko's Digimon) is still quite exhausted physically.
• Undying Loyalty:
  • To King Drasil, to the point where Suedou calls him out for not acting as if he has his own free will. Suedou's words do end up creating doubts in his loyalty, which later ends up significantly weakening his stats and makes him vulnerable.
  • This loyalty also extends to his comrades as seen in Hacker's Memory. After finding out that UlforceVeedramon was lost between dimensions, he dedicates everything he has to tracking him down, even willingly teaming up with a human just to find him. When he reaches the distortion where UlforceVeedramon was lost, he insists on investigating it to find him even though there was nothing more they could do, and attempting to pass through the distortion would likely cost him his life.
• We Can Rule Together: Suedou attempts a lower-key version of this on him, asking if he could instead assist him in "evolving" the world instead of trying to destroy humanity. It doesn't work and only serves to enrage Craniamon.
• You Shall Not Pass!: Evokes this word for word when Aiba, Yuuko, and Suedou attempt to cut Examon's power line. He ultimately fails at preventing their passage, however.

Alphamon

The legendary "Knight of the empty seat" of the Royal Knights, who exists as a balancing factor for the Royal Knights - and, in fact, the true identity of the "Kyoko Kuremi" seen throughout the game, being an inhabitant of her body in the hopes of discovering the truth behind the Eater incidents.

• Ambiguous Gender: As with Crusadermon above, Alphamon had typically been portrayed as male in previous franchise materials. Again, the convenience of a female medium are present, but it is notable that Alphamon and Kyoko-Alphamon have a slightly masculine speech pattern (though not exclusively male), while the true Kyoko speaks femininely.
• Balance Between Good and Evil: Exists as a stabilizing factor for the Royal Knights, although "saving humanity" would probably verge on good in this case.
• Cordon Bleugh Chef: The one responsible for "Kyoko"'s disturbing taste in coffee.
• Good Counterpart: To Crusadermon/Rie. They're both Digimon inhabiting and being influenced by a human body, but while Rie made Crusadermon more unhinged, Kyoko helped Alphamon side with the heroes.
• The Mind Is a Plaything of the Body: Kyoko's body has had such an influence that Alphamon is liable to start waxing philosophy or scientific speculation even in Digimon form.
• Neutral No Longer: Is supposed to balance out the other Royal Knights, but ultimately joins Aiba's faction as a powerful ally.