Jun Manjome

Played by: Kenji Sahara

• Ace Pilot: He does get to show off his aviation skills on occasion.
• Dub Name Change: Known as Jim in the dub.

Yuriko Edogawa

Played by: Hiroko Sakurai

• Intrepid Reporter: Tends to get herself involved in the Monster of the Week stories because of this.

Ippei Togawa

Played by: Yasuhiko Saijou

• Dub Name Change: In the dub, he's instead referred to by the nickname of Happy.
• Plucky Comic Relief: He's much more comedic in nature than the other characters, especially for a Sci-Fi Horror series.

Professor Ichinotani

Played by: Ureo Egawa

• Demoted to Extra: His appearances grow less frequent and his role diminishes as the series goes on.
• The Professor: He's often referred as such for short, particularly in the dub.

Gomess (ゴメス, Gomesu)

Subtitle: Ancient Monster (古代怪獣, Kodai Kaijū)

First Appearance: Defeat Gomess!

• Arch-Enemy: It and Litra are mortal enemies destined to battle each other.
• Asian Lion Dogs: Gomess' head is designed after the famous Okinawan lion-dogs known as "shisa" (シーサー). See here.
• Badass Normal: Gomess may not have any flashy powers like many later Ultra monsters, but it proves formidable enough to hold off Litra without too much issue until the latter uses its Citronella Acid to kill it. This trait would be carried on to Gomess' reappearances in later franchise installments, where it continues to put up decent fights against other Ultra kaiju and the Ultras despite not getting any special abilities most of the time.
• Breakout Villain: Due to its similarities to Godzilla and its holding of the very special title of "First Ultra Kaiju", Gomess has become popular enough to be recycled in many later installments of the Ultra Series as a recurring enemy of the Ultramen.
• David vs. Goliath: The "Goliath" to Litra's "David". Relatively speaking at least, since while Litra isn't very big compared to Gomess, both are still giant monsters.
• Eye Scream: During the fight with Litra, Gomess gets stabbed in the left eye by Litra's Beak Attack.
• Mighty Glacier: Gomess isn't very agile compared to Litra, but makes up for it by being much more physically imposing and powerful.
• Not Zilla: Famously created from a repurposed Godzilla suit (with an entirely new head), and if one looks closely enough, they can see Godzilla's distinctive scales on Gomess' legs and tail.
• Prehistoric Monster: Gomess is a prehistoric kaiju stated to be similar to Permian protomammals like Dimetrodon and a hostile creature humanity needs to stop with the help of Litra. Its Boss Subtitles are even "Ancient Monster".
• Tail Slap: Makes good use of its tail to swat Litra several times during their battle.
• Tunnel King: Gomess is shown to be a proficient burrower, spending much of the episode underground before finally coming to the surface to fight Litra.

Litra (リトラ, Ritora)

Subtitle: Prehistoric Bird (原始怪鳥, Genshi Kaichō)

First Appearance: Defeat Gomess!

• Acid Attack: Litra's signature technique is its Citronella Acid, a beam of potent acid powerful to kill enemies many times its size.
• Arch-Enemy: Of Gomess. The two are prophesied to battle each other to the death in ancient legend.
• Beak Attack: Relies heavily on its beak against Gomess, pecking it in the face and back multiple times in their battle.
• Benevolent Monsters: Unlike the violent and brutish Gomess, Litra is a peaceful and benevolent monster that seeks to protect humans from Gomess' rampage.
• Breakout Character: While Litra never reached the same level of stardom as Gomess, it still proved popular enough to be brought back as one of the main heroic kaiju of Ultra Galaxy Mega Monster Battle, fighting alongside Ultra kaiju superstars Gomora and Eleking against other A-list Ultra monsters like Golza, Zetton, Red King, and King Joe. Litra would even fight alongside the original Ultraman, Ultraseven, and Ultraman Mebius in Mega Monster Battle: Ultra Galaxy Legends against Ultraman Belial and his 100-Monster Army.
• Breath Weapon: Breathes out a stream of "Citronella Acid" Cast from Hit Points. Later appearances from Litra would also give it a more typical fire-based attack it uses more often .
• Cast from Hit Points: Litra's Breath Weapon requires its own life force to use, so it saves it for the most desperate situations.
• David vs. Goliath: Being barely a quarter of Gomess' size, Litra is the David that relies on speed instead of strength.
• Fragile Flyer: In contrast with the hulking and brutish Gomess, Litra can barely put up a fight in their final confrontation, at least until it manages to ram her beak into Gomess' left eye. Litra does have a ranged attack in its Citronella Acid, which allows it an advantage over Gomess, but that attack turns out to be Cast from Hit Points — after Gomess dies, Litra succumbs from using the beam far too many times as well.
• Fragile Speedster: Litra proves pretty fragile against the strength of Gomess, relying more on its speed to fly around Gomess' head and harass it with its beak and thwacks from its wings.
• Gentle Giant: Lita is a peaceful creature that opposes violent and destructive monsters like Gomess.
• Giant Flyer: Litra isn't very gigantic compared to most Ultra kaiju, being only 5 meters tall (15 meters in later appearances), but that's still a really big bird by anyone's standards.
• Meaningful Name: Derived from "little", referencing its smaller stature compared to Gomess.
• The Phoenix: Litra is heavily inspired by the phoenix, being a legendary avian creature that helps humanity and sacrifices its life for the greater good; the characters even visit a temple with a phoenix-style engraving of Litra. However, Litra's sacrificial ability is acid-based rather than fire-based. Later appearances from Litra would more heavily emphasize the phoenix motif by granting it fire-based powers.
• Prehistoric Monster: Like Gomess, Litra is stated to be from Earth's ancient past, being related to the likes of Archaeopteryx. Subverted overall as Litra is a Benvolent Monster.

Goro (ゴロー, Gorō)

Subtitle: Giant Monkey (巨大猿, Kyodai Saru)

First Appearance: Goro and Goroh

• Berserk Button: Goro is a perfectly peaceful creature so long as you don't hurt his human friend.
• Big Eater: Goro's enormous size gives him an enormous appetite, his human friend Goroh having to steal large amounts of fruit form local orchards to feed him and Goro himself raid milk delivery trucks to guzzle down their loads.
• Gentle Giant: Goro is very friendly towards Goroh the human, and when he causes trouble, it's only because of his playfulness, such as shaking the wires of a cable car (to the terror of the riders, although nobody is hurt) or wanting to get milk from a truck.
• King Kong Copy: Just like Gomess in the previous episode, Goro is an all-time kaiju legend disguised for Ultra Q, in this case King Kong, the lone difference being a tail added on to make him a monkey. And just like Kong, Goro's rampage is driven by his search for a human he cares closely for. But in an inversion of Kong's story, Goro is shipped from civilization to an isolated tropical island after the characters capture him.
• Meaningful Name: Goro's name is inspired by "gorilla", as befitting a King Kong Copy (even if he's a monkey, not an ape), and also matches up with the common Japanese name of Goro, which is that of his human friend (the kanji being "五郎").
• Mischief-Making Monkey: Although now standing 50 meters tall, Goro still gets into the same kinds of shenanigans that normal-sized monkeys get into.
• Non-Malicious Monster: Goro is about as dangerous and aggressive to humans as a regular monkey, his sole interests being to find food, have fun, and protect his human friend. His rampage in the climax only occurs in response to the police arresting Goroh the human.
• Silly Simian: Being a kaiju-sized Mischief-Making Monkey, Goro gets into his fair share of comic antics, like accidentally spraying himself in the face with milk or curiously poking at telephone wires and reacting dramatically to getting zapped.
• Trademark Favorite Food: Fruit and milk. His human friend Goroh fetches baskets upon baskets of fruit for him, and during his climactic rampage, the characters sedate him using a giant canister of tranquilizer-laden milk.

Namegon (ナメゴン, Namegon)

Subtitle: Mars Monster (火星怪獣, Kasei Kaijū)

First Appearance: The Gift from Space

• Big Creepy-Crawlies: They're giant alien slug monsters, making them a different type of minibeast than the usual monstrous insects or arachnids.
• Bioweapon Beast: It's implied the Namegons were sent by Martians as a warning to humanity regarding their efforts to expand into space.
• Disney Villain Death: The first Namegon dies when it falls of a cliff and plunges into the ocean, dissolving on impact from the salt in the water.
• Eye Beams: Able to fire rays of energy from its eyes that paralyze humans humans on impact, killing them instantly.
• Gigantic Adults, Tiny Babies: The Namegon eggs are the size of thumbnails, but when exposed to heat, they rapidly balloon in size to hatch out a 30-meter tall kaiju.
• Martians: As their Boss Subtitles indicate, the Namegons hail from Mars, and they're implied to be the Bioweapon Beasts of the Martian natives.
• Meaningful Name: Comes from "namekuji" (蛞蝓), the Japanese word for "slug".
• Salt Solution: Being slug monsters, the Namegons are vulnerable to saltwater. The first Namegon is killed when it falls into the ocean, and the episode ends with Professor Ichinotani preparing some saltwater to kill the second Namegon.
• There Is Another: For much of the episode, the characters deal with the Namegon egg that the thieves had managed to keep on them, which hatched in exposure to a hot spring inside the volcanic cave the crooks were hiding out in. Once that Namegon is dealt with, it turns out the other egg had been found by Ippei and made into a pendant for Yuriko, and it hatches when she's standing a little too close to one of Professor Ichinotani's Bunsen burners.

Juran (ジュラン, Juran)

Subtitle:Giant Plant (巨大植物, Kyodai Shokubutsu)

First Appearance: Mammoth Flower

• Attack of the Monster Appendage: Juran's bloodsucking roots menace the characters multiple times throughout the episode, and the creature first makes itself known when its roots burst into the Imperial Palace's moat and a nearby basement in search of fluids.
• Breakout Villain: Juran is considered among Ultra Q's most iconic creatures, enough so that it regularly gets homaged and referenced in later Ultra shows (such as in Ultraman Z, Ultraman Trigger: New Generation Tiga, and Ultraman Decker), featured in merchandise, and even make quick reappearances in other franchise entries, like Ultra Galaxy Mega Monster Battle and Shin Ultraman.
• Foul Flower: It's a Prehistoric Monster flower with bloodsucking roots and poisonous pollen that causes chaos and destruction in Tokyo.
• Kryptonite Factor: Professor Ichinotani has a specialized herbicide created specifically to destroy Juran, and Jun has to pilot a helicopter around the Mammoth Flower to spray the poison at it.
• Only Known by Their Nickname: It's dubbed the "Mammoth Flower" (マンモスフラワー, Manmosu Furawā) in its appearance and solely referred to by that name in the episode. "Juran" was a designation only confirmed in All There in the Manual materials published afterwards.
• Poisonous Person: Juran produces poisonous pollen from its mass.
• Prehistoric Monster: Professor Ichinotani describes Juran as being of prehistoric origins, explaining that its bulb had been lying dormant beneath Tokyo for millions of years until ideal conditions awoke it.
• Towering Flower: At 100 meters in height, Juran towers over the buildings of 1966 Tokyo.
• Vine Tentacles: Technically, Root Tentacles, but the effect is the same. Juran attacks its surroundings using its
• Weak to Fire: Being a giant plant, Juran is vulnerable to fire. Once Ippei and his love interest Michiko are rescued from inside the building Juran grew from under, the JSDF are able to deploy flamethrowers against its stalk and roots as Jun sprays it with Ichinotani's herbicide.

Peguila (ペギラ, Pegira)

Subtitle:Freezing Monster (冷凍怪獣, Reitō Kaijū)

First Appearance: Peguila is Here!

• Artificial Gravity: Its Breath Weapon possesses anti-gravity properties, as does the Smoke Out it creates when it flies.
• Breakout Villain: Due to its unique appearance and abilities, Peguila has gone on to become one of the most iconic Ultra Q monsters, earning it many small cameos in later series and eventually granting its first chance to fight an Ultraman onscreen in Ultra Galaxy Fight: New Generation Heroes, over fifty years after the monster's first appearance.
• Breath Weapon: Breathes out a powerful beam of freezing mist that also causes objects to be affected by anti-gravity.
• Giant Flyer: Its bat-like wings allow it to fly.
• Gravity Master: Able to manipulate gravity through the manipulation of cold temperatures, taking advantage of how reducing an object's thermal energy reduces its gravitational influence.
• Kryptonite Factor: Peguila's only weakness is Pegimin H, a chemical that exists in only a certain species of polar moss. Exposure to the chemical, such as breathing it in or consuming it, is harmful to the kaiju and repels it immediately.
• An Ice Person: Peguila produces freezing mist that can plunge temperatures as low as -130 degrees. Its Boss Subtitles are even "Freezing Monster"!
• Meaningful Name: Comes from "penguin", befitting its Antarctic origins.
• Mix-and-Match Critters: Peguila's design is meant to be a hybrid of a walrus and a penguin, possessing the head and hairless, leathery skin of the former and the flipper-like wings, upright posture, and webbed feet of the latter. The overall result looks something like a giant bat.
• Smoke Out: When Peguila flies, its body is cloaked in a smokescreen that has the same anti-gravity effect as its Breath Weapon.
• Villain: Exit, Stage Left: In both of its appearances, Peguila is driven away by the weaponization of Pegimin H rather than killed, fleeing for Japan the first time and never returning again the second time.
• Wily Walrus: Resembles a giant flying walrus with flipper-like wings.

Gameron (ガメロン, Gameron)

Subtitle: Large Turtle (大ガメ, Ōgame)

First Appearance: Grow Up, Little Turtle!

• Expy: The year before Ultra Q debuted, Japan had created another giant flying "Gamer-" turtle...
• Intangibility: Gameron can phase through walls at will, granting the ability to anyone riding it as well.

The Dragon (怪竜, Kai Ryū)

Subtitle: Ten Thousand Snake Monster (万蛇怪獣, Manda Kaijū)

First Appearance: Grow Up, Little Turtle!

• Breath Weapon: Breathes fire.
• Diabolus ex Nihilo: The whole episode is rather bizarre, but the Kai Dragon brings things up a notch as Oto-hime creates it from a rocket she rides to fight Gameron, only to vanish after the fight finishes a few minutes later.
• Our Dragons Are Different: Like Manda, the Kai Dragon is based on traditional Japanese dragons.
• We Hardly Knew Ye: Only appears for one very quick scene where it kills Gameron and then vanishes once the deed is done.

Otohime (乙姫, Otohime)

Subtitle: Dragon King Castle Person (竜宮人, Ryūgū-jin

First Appearance: Grow Up, Little Turtle!

Played by: Aiko Tateishi

• Reality Warper: She's shown doing things like summoning a swing, teleporting Taro onto said swing, and turning a rocket into the Kai Dragon. Justified as it was All Just a Dream from Taro.
• The Trickster: She mainly just uses her powers to annoy Taro and make havoc with him, yet also rescuing him when he almost drowns and fixing his clothes when the Kai Dragon burns them.

Gorgos (ゴルゴス, Gorugosu)

Subtitle: Rock Monster (岩石怪獣, Ganseki Kaijū)

First Appearance: S.O.S. Mount Fuji

• Achilles' Heel: Gorgos' life is powered by a glowing core inside its body. If the core is somehow extracted from the monster or destroyed, Gorgos dies.
• Breath Weapon: Can breathe superheated steam.
• No Name Given: In his debut appearance, he's only called the Rock Monster. "Gorgos" was only created much later.
• Pulling Themselves Together: Construction workers initially encounter it in the form of a boulder on a road, so they dynamite it. However, Gorgos' core regathers the pieces to recreate Gorgos.
• Rock Monster: Gorgos came to Earth from a meteorite that crashlanded at Mt. Fuji.

Mongula (モングラー, Mongurā)

Subtitle: Mole Monster (モグラ怪獣, Mogura Kaijū)

First Appearance: Terror of the Sweet Honey

• Inconsistent Spelling: Also called Mongular.
• Kill It with Fire: The JSDF finishes off Mongula by dynamiting a volcano to create an eruption that engulfs the giant mole in lava (done via Stock Footage from Rodan).
• Tunnel King: Since Mongula is just a giant mole, the JSDF spends a good amount of time trying to figure out how to lure the monster to the surface.

Tarantula (タランチュラ, Taranchura)

Subtitle: Large Spider (大ぐも, Ō Gumo)

First Appearance: Spider Baron

• Giant Spider: It is left vague whether the two Tarantulas are a pair of abnormally large spiders collected from a remote part of the world by the scientist or the reincarnated forms of the scientist and daughter who allegedly haunt the mansion.
• Haunted House: The Tarantulas' lair is a classic western-style mansion located in a swamp. Naturally, Jun and company have to spend the night there.
• Maybe Magic, Maybe Mundane: They're either really large spiders or the transformed state of the scientist and his daughter. The fact that the mansion gets destroyed the instant both are killed leans more into the curse theory.

M1 (M1号, Emu Ichi-Gō)

Subtitle: Artificial Life Form (人工生命, Jinkō Seimei)

First Appearance: The Underground Super Express Goes West

Voiced by: Masao Nakasone

• Blob Monster: Its normal state is a mass of cellular jelly, but when it escapes from containment, M1 rapidly evolves into a gorilla-like creature.
• Non-Malicious Monster: Although M1 is a peaceful creature, he causes a lot of havoc on the train with his presence, as he scares the train's passengers and messes with its controls.

Balloonga (バルンガ, Barunga)

Subtitle: Balloon Monster (風船怪獣, Fūsen Kaijū)

First Appearance: Balloonga

• Energy Absorption: Feeds on any form of energy (such as electricity, but it even consumes energy produced by missiles and a typhoon), allowing it to rapidly expand, and theoretically, it can do this ad infinitum.
• Living Gasbag: It's a rapidly expanding balloon-like monster from Saturn that ends up on Earth when it latches on to a rocket returning from the ringed planet.
• Meaningful Name: It's a Living Gasbag named Balloonga.

Larugeus (ラルゲユウス, Rarugeyūsu)

Subtitle: Ancient Monster Bird (古代怪鳥, Kodai Kaichō)

First Appearance: I Saw a Bird

• Big Eater: The first evidence of its existence is when all the animals at a zoo go missing and the injured zookeeper says "I saw a bird".
• Meaningful Name: Larugeus' name is a mutation of "large", which is what the bird can make itself. It also (perhaps coincidentally) is similar to Larus, the taxonomic genus which most seagulls belong to.
• Prehistoric Monster: Professor Ichinotani explains that Larugeus' species has been extinct since the Ice Age.
• Sizeshifter: Larugeus' normal form is only the size of a finch, but it can make itself as tall as 50 meters if it is hungry or enraged. However this fact is not revealed to either the audience or the cast until the end of the story.

Garamon (ガラモン, Garamon)

Subtitle: Meteorite Monster (隕石怪獣, Inseki Kaijū)

First Appearance: Garadama

• Applied Phlebotinum: The Tilsonite meteor, dubbed "Garadama" by the characters. The rock acts as Garamon's brain and programs the robot monster to do as the aliens behind it desire. Destroying the meteorite kills Garamon.
• Breakout Villain: Like Peguila, Garamon is a highly iconic Ultra Q kaiju, though it took some time to come back in a mainline installment (until 2023's Ultraman Blazar) due to his identical resemblance to the more popular Pigmon (the only physical difference is their size and a chest badge that Garamon has but Pigmon doesn't).
• Came from the Sky: They always arrive on Earth in the form of meteors.
• Cicadian Rhythm: Makes these noises as it walks, which acts as a subtle hint of the identity of its creators.
• Humongous Mecha: Although he doesn't look like a robot, Garamon is in fact a mechanical monster created by the Cicada People to invade Earth.

Kanegon (カネゴン, Kanegon)

Subtitle: Coin Monster (コイン怪獣, Koin Kaijū)

First Appearance: Kanegon's Cocoon

Voiced by: Mitsuko Aso

• Breakout Character: Even though Kanegon barely ever reappears in the Ultra Series, he's up there with the likes of Baltan, Red King, Gomora, and Zetton as among the most recognizable and iconic Ultra monsters in Japan.
• Cast from Money: Kanegon's zipper-like mouth and leathery skin texture evoke the appearance of a coin purse. Fittingly, given how he was created, Kanegon must physically eat money to sustain himself, be it coins or banknotes. He even has a handy counter on his chest which measures how much cash he's consumed, suggesting that the money isn't destroyed when he consumes it, but is merely stored within his body until it's eventually metabolised.
• Meaningful Name: "Kane" is Japanese for "money"!
• Non-Malicious Monster: In his desperate search for cash to satisfy his appetite, Kanegon causes a lot of havoc as he scares people, but otherwise has no ill intentions.
• Was Once a Man: Kanegon is the result of a kid becoming transformed by a magical, money-making cocoon when he tried to find the source of the coins inside it.

Cicada Man (セミ人間, Semi Ningen)

Subtitle: Space Phantom (宇宙怪人, Uchū Kaijin)

First Appearance: Garamon Strikes Back

Played by: Michio Gina (also human form actor)

• Breakout Villain: The Cicada People tend to appear a fair bit due to their association with Garamon and Baltan. Though after Ultra Q Dark Fantasy it took while for the male variant to reappear
• Insectoid Aliens: He's from a species of humanoid cicadas native to Planet Q. Incidentally, his species are related to the Ultra series most famous insectoid aliens, the Baltans.
• The Man Behind the Man: His species had sent Garamon to attack Earth in the monster's first appearance, but they don't physically appear until the aliens decide to send two more Garamons to attack.
• Mind Over Matter: His weapon of choice is a telekinetic remote control, which he uses to snatch the firearms right from the cops' hands and shoot them with their own guns.
• You Have Failed Me: The one individual is killed by a flying saucer sent by his superiors after the Garamons are killed.

1/8 Humans (1/8人間, Hachibun-no-Ichi Ningen)

Subtitle: None

First Appearance: The 1/8 Project

• Incredible Shrinking Man: In a plot remarkably reminiscent of Downsizing (made 51 years later), Yuriko learns of a project by the Japanese government to increase urban living space by miniaturizing humans to an eighth of their size. It turns out to be All Just a Dream though.

Pagos (パゴス, Pagosu)

Subtitle: Underground Monster (地底怪獣, Chitei Kaijū)

First Appearance: The Rainbow's Egg

• Breakout Character: After returning in Ultraman Taiga 53 years later, Pagos seems to have become this.
• Breath Weapon: Pagos has atomic breath.
• Metal Muncher: Pagos feeds on uranium and spends much of the episode pursuing a uranium capsule dubbed "the Rainbow's Egg".
• Radiation-Induced Superpowers: His uranium diet has granted him atomic powers.
• Taken for Granite: The JSDF destroys Pagos by turning it to stone through chemical missies, causing the monster to shatter afterwards.
• Tunnel King: Like Baragon whom he's based on, Pagos is primarily a burrowing monster.

Kemur ((ケムール人, Kemūru Jin)

Subtitle: Abduction Phantom (誘拐怪人, Yūkai Kaijin)

First Appearance: Challenge from the Year 2020

• Achilles' Heel: X-Channel Light Rays are harmful to Kemur.
• Age Without Youth: the Kemurs have found a way to expand their lifespan to 500 years but still age at the same a regular rate.
• Alien Abduction: His goal is to abduct humans and bring them back to the future to sustain his life force. Instead of a flying saucer though, he's using Weaponized Teleportation.
• Breakout Villain: Kemur is considered to be among Ultra Q's most iconic monsters due to the eerie nature of his appearance and debut episode. Since he also possesses the ability to change size, he has also battled a few Ultramen, such as Ultraman Ginga.
• Evil Laugh: Kemur can produce a particularly impressive example, with sound effects derived from the menacing laughter of the Matango.
• Life Imitates Art: In-Universe example. In the episode, Ippei notes that Kemur's story as reported is exactly the same as a science fiction novel called Challenge from the Year 2020, which also deals with an alien that goes to the past to capture humans using teleportation slime as a weapon. Following the novel also allows the characters to discover his weakness.
• Super-Speed: In one iconic scene, Kemur outruns a pursuing police car with this ability.
• Weaponized Teleportation: Kemur's most well known ability is to spray a purple goop from his antenna that teleports victims to a pocket dimension. He can also use this power on himself to teleport to safety, as demonstrated when he used it to escape following his defeat.

Ragon (ラゴン, Ragon)

Subtitle: Undersea Humanoid (海底原人, Kaitei Genjin)

First Appearance: The Undersea Humanoid Ragon

• Breakout Villain: Ragon is one of the most well-known monsters in the show and ended up becoming the first monster to reappear in another series when a male mutated into a giant by an atomic bomb battled the original Ultraman.
• Ear Fins: The Ragons have fins in place of their ears, to complete the "Black Lagoon Creature" look.
• Fish People: The resemblance to the Creature from the Black Lagoon has been noted by western fans.
• Monster Is a Mommy: The Ragon had been attacking the village because the item that the fishermen had discovered was actually the monster's egg.
• Music Soothes the Savage Beast: An enraged Ragon is always calmed down by music, with the individual running amok in the fishing village being briefly distracted by a transistor radio when it attacks the characters.
• Non-Mammalian Mammaries: Despite being Fish People, the female has visible breasts.
• Our Mermaids Are Different: The Ragons were known in the legends of the Iwanejima fishermen as a race of reclusive half-fish, half-human creatures from the bottom of the sea.

Bostang (ボスタング, Bosutangu)

Subtitle: Space Stingray (宇宙エイ, Uchū Ei)

First Appearance: Space Directive M774

• Giant Flyer: As a manta ray kaiju, it can both fly and swim.
• Sea Monster: The Keels landed Bostang in the ocean and let the creature go about attacking ships as it pleased.
• Sinister Stingrays: A violent stingray-based kaiju.

Alien Keel (キール星人, Kīru Seijin)

Subtitle: Strategist Alien (戦略星人, Senryaku Seijin)

First Appearance: Space Directive M774

• Arch-Enemy: Of the Alien Ruperts, whose homeworld they had devastated in a previous conquest.
• Human Aliens: Revealed to be such in Ultra Galaxy. Even then, they usually prefer to wear concealing helmets that make them appear more alien.
• Invisible Aliens: Until Ultra Galaxy Mega Monster Battle NEO, they never made a physical appearance.
• The Man Behind the Man: They are directing Bostang to attack ships on Earth as part of their galactic conquest, as Zemi explains.

Alien Ruperts (ルパーツ星人, Rupatsu Seijin)

Subtitle: none

First Appearance: Space Directive M774

Played by: Keiko Mizuki

• Aliens Among Us: As she reveals at the end of the episode.
• Human Aliens: Although she only ever appears in a human-like form, she states that it is merely a disguise. She also claims at the end of the episode that others of her kind live amongst humanity in similar form.

The Giant (巨人, Kyojin)

Subtitle: Transformed Human (変身人間, Henshin Ningen)

First Appearance: Metamorphosis

Played by: Kozo Nomura

• Brainwashed and Crazy: Being infected by the powder of the Morpho Butterflies has turned Kohji into a mindless, hulking brute with no memory of his former life. He gets better.

Morpho Butterfly (モルフォ蝶, Morufo Chō)

Subtitle: Huge Butterfly (巨蝶, Kiyo Chō)

First Appearance: Metamorphosis

• Big Creepy-Crawlies: While not as gigantic as many later insects, a butterfly with a 2 meter wingspan is nothing to sneeze at.
• Butterfly of Transformation: Literally. These are butterflies that turn other creatures into giant monsters.
• Punny Name: "Morpho" is a play on their ability to morph other creatures into giants, as well as a genus of butterflies from South America.

Sudar (スダール, Sudāru)

Subtitle: Giant Octopus (大ダコ, Ōdako)

First Appearance: Fury of the South Sea

• Giant Squid: Octopus actually, but a cephalopod with a 100-meter body and 200-meter tentacles is still nothing to be sneezed at.
• Sea Monster: The natives of Compass Island are terrified of Sudar and try to appease it with sacrifices of those who break their laws, as well as suspicious foreigners.

Goga (ゴーガ, Gōga)

Subtitle: Shellfish Monster (貝獣, Kai-jū)

First Appearance: The Idol of Goga

• Eye Beams: Can fire disintegration rays from its eyestalks, even when sealed inside its statue.
• Kill It with Fire: How the JSDF destroys it.
• Sealed Evil in a Can: After devastating Aranka six thousand years ago, Goga was somehow shrunken and imprisoned inside a statue by the Arankans. However, the statue is also cursed to release Goga if it is ever desecrated. Then some thieves steal it from its museum display...
• This Is a Drill: The monster's shell can act as a backwards-facing drill.

Lily (リリー, Rirī)

Subtitle: Demon Child (悪魔ッ子, Akuma Kko)

First Appearance: The Devil Child

Played by: Noriko Sakabe

• Astral Projection: Lily is just an ordinary little girl, but after being used as a volunteer for Akanuma's spirit-body separation trick, she ends up with the ability to separate into a good physical form and evil spirit form every night when the magician's trick proves to be less temporary than anticipated.
• Creepy Child: The evil half of Lily, complete with an eerie laugh.
• Evil Laugh: Lily's evil side has one. It's that of the Matango modified to sound like a little girl.
• Evil Twin: Lily's spirit. She even tries to lure her good twin into getting hit by a train!

Alligatortois Peter (アリゲトータスピーター, Arigetōtasu Pītā)

Subtitle: Deep Sea Monster (深海怪獣, Shinkai Kaijū)

First Appearance: Blazing Victory

• Combat Clairvoyance: Peter possesses the ability to predict the future and communicate it to his owner, which Dynamite Joe keeps a secret from the public. But when Peter predicts that he will lose the world championship, Joe goes into hiding.
• Non-Indicative Name: Peter’s species name “Alligatortois” is a portmanteau of “Alligator” and “Tortoise”, but he's clearly not either species.
• Sizeshifter: Variation. Peter is normally the size of a normal lizard, but can only maintain his size if in water. On land, his size increases to that of a human, and when exposed to intense heat, he can reach a height of 30 meters.

Todola (トドラ, Todora)

Subtitle: Four-dimensional Monster (四次元怪獣, Yojigen Kaijū)

First Appearance: The Disappearance of Flight 206

• Phantom Zone: Todola's primary power is to create a cloud-like vortex that engulfs airplanes and transports them to its world, an endless zone of mist-covered ground full of ruined planes.
• Wily Walrus: In this case, one from a pocket dimension that captures planes for it to attack.

The Train in the Vary Dimension ((異次元列車, Ijigen Ressha)

Subtitle: None

First Appearance: Open Up!

• Cool Train: Modelled after the Odakyu 3100 Electric Train.
• Not-So-Imaginary Friend: As the characters discover, the story of the Vary Dimension and its train were originally written by a science fiction writer named Kenji Tomono. When the cast investigate, they discover his last writing: a letter saying he has taken the train...

Wadatuzin (ワダツジン, Wadatsujin)

Subtitle: None

• Ancient Astronauts: She arrived in the Yayoi period, and uses her immortality to educate the then-primitive humans about the importance of environmental preservation, becoming worshipped as a nature goddess in the process.
• Lady in Red: Her human form.
• Living Statue: Another form she displayed is as a dogu statue. In this form she can fire Eye Beams.
• Making a Splash: Her specialty, where she can manipulate water into becoming rock-solid projectiles and use the water bullets to kill her victims.
• Really Seven Hundred Years Old: She's stated to have existed since the Yayoi period.
• Well-Intentioned Extremist: The various land developers and CEOs she killed are involved in a large-scale city development project, which she intends to prevent in order to preserve the environment, and her unleashing Nagira to go on wide-scale rampages is to warn humans of far worse consequences to come if they fail to embrace mother nature.

Nagira (薙羅, Nagira)

Subtitle: Ancient God-beast (古代神獣, Kodai Shin-jJū)

• Breath Weapon: Can fire an energy blast from its mouth, which it used to wipe out a coastal city.
• Expy: Of Gomess from the original series. It's a big, subterranean monster with horns that looks more than a little bit like Godzilla.
• Monster Delay: Firstly, the tail. Then some horns, and maybe a quick glimpse of its head. Then a silhouette before finally showing the monster in all its glory.
• Pet Monstrosity: The kaiju servant to Wadatuzin.
• Tail Slap: In its first onscreen appearance, Nagira doesn't completely appear to the audience, instead only sticking out its tail which it then uses to lash out at buildings in a construction site.
• Tunnel King: Is capable of travelling underground by digging.