- Badass Pacifist: Whereas other Ultramen are warriors who usually kill the monsters and aliens they battle, Cosmos prefers not to use violence and instead usually attempts to purify his opponents.
- Friend to All Living Things: Cosmos has dedicated his life to all creatures that seek to live peacefully with others.
- Gentle Giant: Even by Ultraman standards, Cosmos is gentle and kind, only killing his enemies if no peaceful solutions can be achieved.
- Martial Pacifist: Cosmos often uses defensive maneuvers when battling, as he tries to avoid provoking fights and battles only to subdue his enemies.
- Multiform Balance: Cosmos has two forms he switches between depending on the situation.
- Squishy Wizard: Luna Mode, his default blue form, uses a variety of healing, purification, and calming powers in order to pacify berserk monsters. It powered by Cosmos' own kindness.
- Jack-of-All-Stats: His Corona Mode, where he gains lots of red in overlap with his blue patterns. This form is powered by Cosmos' strength, and is mainly used if killing is the only way to end the conflict.
- Super Mode: His Eclipse Mode, which he gains in Episode 30. It combines the powers of Luna and Corona Mode through Musashi's own courage. However, it can only be used for one minute.
- O.O.C. Is Serious Business: in Ultraman Saga, Cosmos fought in his Luna Mode form despite the form is incapable of strong attacks.
- Technical Pacifist: His fighting style relies heavily on defending himself and subduing his foes rather than hurting them.
The attack team of this series, EYES is a branch of the SRC (Scientific Research Circle), an organization dedicated to studying and protecting monsters and aliens. Thus, EYES is not a military squad and prefers to deal with monsters and aliens non-violently. However, they do carry weaponry and have fighting vehicles for defense and those times when they must battle the monsters. In the series' timeline, the group was established shortly after the events of the first movie in response to the appearance of Ultraman Cosmos.
The Main Team
- Played by: Taiyo Sugiura (in the series), Kounosuke Tokai (in First Contact)
- All-Loving Hero: In a manner similar to Cosmos. See Friend to All Living Things below.
- Decoy Protagonist: It appears that the Cosmos VS Justice movie focuses on Musashi, right? Wrong. The director reveals in the magazine that the true viewpoint character is Julie, aka. Ultraman Justice.
- Friend to All Living Things: Like Cosmos, Musashi believes that all beings, whether they be human, monster, animal, or alien, have a right to live in peace.
- The Hero: The series follows his dreams in pursuit of a world where all creatures, including kaiju, can live together peacefully.
- Martial Pacifist: Believes strongly in avoiding violence and fighting, which grows stronger as the series draws to a close as he even questions if killing Chaos Header is right.
- Played by: Daisuke Shima
- A Day in the Limelight: "The Alternate Dimension Trap" and "Gigi vs Gon".
- The Captain: Of EYES.
- Supporting Leader: He tends to direct orders from the safety of EYES' Treasure Base.
- Played by: Kaori Sakagami
- A Day in the Limelight: "The Legend of Mt. Nibito" and "The Magic Stone".
- Action Girl: In contrast to Ayano, who's usually stationed in base.
- Number Two: To Captain Hiura, as she leads the rest of the team out in the field.
- Played by: Koichi Sudo
- A Day in the Limelight: "Monster Fishing", "The Bronze Devil", "Wrath of the Sea God", and "The Miraculous Flower".
- Fat Comic Relief: He often has his moments as such, but is also legitimately a very intelligent person whose ideas have proven to be key to success on many occasions.
- The Smart Guy: He creates the various technology and strategies that EYES uses against monsters, and also plays a role in researching the anti-Chaos Header antidote.
- Smart People Wear Glasses: Always bespectacled.
- "Well Done, Son!" Guy: His relationship with his father, who he feels doesn't appreciate his achievements as an EYES scientist enough to care.
- Played by: Mayuka Suzuki
- A Day in the Limelight: "The Sleeping Girl", "Warm Memories", and "The Amusement Park Legend"
- Bridge Bunnies: She's typically stationed at EYES' computer and communications bridge.
- Genki Girl: She's a cheerful and chatty girl full of energy and good feelings.
- Mission Control: She rarely ever goes out onto the field.
- Played by: Hidekazu Ichinose
- A Day in the Limelight: "Revenge of the Fireflies", "Fubuki Retires?!", "The Green Fugitive", and "Sorceress of the Sky".
- Grumpy Bear: In contrast to the more lighthearted nature of the show and most of its cast, Fubuki tends to be rather dour and cynical.
- The Rival: With Musashi. Hiura likes to make them work together, but Fubuki finds Musashi's pacifistic attitude to be naive.
Dr. Noboru Kawaya
- Played by: Shigeki Kagemaru
- Chivalrous Pervert: Despite his playboy attitude, Dr. Kawaya is very loyal to the women he loves. Best shown in his debut, where he takes a bullet for the Alien Srayu Lamia to save her from JADF officers.
- The Medic: He serves as EYES' doctor.
IkeyamaA close friend of Musashi who works in SRC's Monster Observation Facility on the Kapuya Islands where many of the monsters pacified by Cosmos dwell.
- First Appearance: Reunion with the LightVoiced by: Koji Haramaki
- The Assimilator: Chaos Header believes that the fact that all living creatures have differing thoughts is the ultimate cause of conflict, thus it infects them with its own essence, assimilating their minds into its own and creating "order".
- Barrier Warrior: Its final form, Chaos Darkness, can create a purple energy barrier to block attacks.
- Big Bad: Of the series proper.
- The Corruption: Chaos Header transforms creatures into evil and twisted versions of themselves that Cosmos has to either purify or destroy depending on the situation.
- It can also create evil versions of beings it infects if it chooses to.
- Demonic Possession: Chaos Header specializes in taking over the bodies of other creatures — humans, animals, monsters, aliens, and even robots. In their corrupted forms, they become uncontrollably evil and often gain new powers or a demonic appearance.
- Eldritch Abomination: A mass of virus-like beings that seek to corrupt all beings in the universe in order to form a new cosmic order.
- Energy Absorption: In its physical forms, Chaos Header is able to drain energy from Ultraman Cosmos, which it uses in its first battle with him to analyze Cosmos' powers and combat tactics.
- Later on, it absorbs some of Cosmos' energy attacks to grow more powerful and even absorbs some of Cosmos' light to become Chaos Ultraman.
- Energy Being: Since the microorganisms that compose its body are made of a light-like substance.
- Evil Cannot Comprehend Good: As Musashi observes in Episode 26, Chaos Header is fascinated with negative human emotions like anger and sadness, but happiness and love disturb and confuse it to the point of weakening.
- Evil Knockoff: When not corrupting other beings, Chaos Header instead creates an evil doppelganger of them, which it does to Golmede, Parastan, and Eligal. However, Chaos Header need to collect their DNA to do this.
- Later on, Chaos Header absorbs some of Ultraman Cosmos' light from the Cosmos Pluck, allowing it to transform into the evil doppelganger, Chaos Ultraman (or Chaos Ultraman Calamity when it gets a power boost).
- Eye Beams: Chaos Header can fire bolts of chaos energy from its eyes in all its physical forms, which is derived from one of its abilities in its normal light form.
- Gone Horribly Wrong: As EYES learns from an alien document recovered from the ruins of a planet, Chaos Header was created by an exinct alien race to bring order to the universe. However, the entity believed order could only be achieved violently and imposed its will by devastating planets and corrupting or killing native lifeforms as a result.
- Good Hurts Evil: Positive emotions weaken Chaos Header's infections over anything that its corrupted.
- In the finale, Musashi discovers that Chaos Header's capacity for evil suggests a capacity for goodness, so as he tries to tap into the goodness in Chaos Header's heart, causing the entity to become temporarily stunned with each attempt.
- Hand Blast: Chaos Darkness, possesses a number of such abilities; all very powerful.
- The Chaos Light Bullets are small energy blasts that can cause large explosions, covering several city blocks with fire.
- The Dark Destroyer charges up a massive energy ball that fire with tremendous force, pushing back whatever it hits hundreds of yards. It even shattered Cosmos' Golden Barrier!
- The Crimson Break is done with red energy blasts shot into the ground, creating a massive, explosive fissure of chaos energy.
- HeelFace Turn: After managing to find Chaos Header's hidden goodness, Musashi ultimately purifies the villain, transforming the evil entity into the angelic Chaos Header Zero. As Chaos Header thanks Musashi for the deed, even Ultraman Cosmos is left impressed by Musashi for his determination to redeem the villain — something that even he never considered.
- Taken a step further in Ultraman Saga, where Musashi reveals that the redeemed Chaos Header has become the new guardian of a rejuvenated Juran, watching over the planet-turned-monster sanctuary and protecting its inhabitants. He's even on good terms with Musashi now.
- I Am Legion: Whenever Chaos Header speaks, it refers himself as "we", as it's a hive mind of tiny but malevolent microorganisms.
- Kryptonite Factor: The reason why Chaos Header cannot infect the same victims over and over again is because they develop an antibody that makes them immune (or at least highly resistant) to Chaos Header's corruption. As the series progresses, EYES researches the anitbodies in hopes of creating a formula that will destroy Chaos Header.
- Chaos Header is also weakened by a type of mineral found on the Moon dubbed SOAAG by EYES, which the team combines with the antibody and Mazalgas' Chaos Chimera enzyme during the events of the finale.
- Light Is Not Good: Its most basic form resembles particles of bright light, which EYES initially assumes to be some kind of marvelous cosmic spectacle when it first appears. Then said light releases a beam of energy that destroys an entire city!
- Mind over Matter: In its physical forms, Chaos Header can fire waves of telekinetic energy that force push whatever they hit. They get more powerful with each new form, eventually escalating to outright telekinesis.
- One-Winged Angel: Three times in the series does Chaos Header take on a dark and demonic physical form to battle Ultraman Cosmos.
- The first was in Episode 26 "The Power to Defeat Chaos" as Chaos Header Iblis.
- Second was as Chaos Header Mebut in Episode 29 "Dreaming of Courage".
- Finally, as Chaos Darkness in the finale.
- The Power of Hate: Chaos Header manifests in physical forms if it has absorbed a sufficient amount of negative emotions. If not sacrificing a living being will do instead.
- In the finale, Chaps Header its own hatred for Ultraman Cosmos to become Chaos Darkness.
- Red Eyes, Take Warning: In all its physical forms, though whenever Chaos Header forms a face in its light form, it has this trait.
- Also, Chaos-infected victims tend to have these.
- First Appearance: Reunion with the Light
- Benevolent Monsters: Like many kaiju in this series, Lidorias is a gentle creature that will help humans if necessary. Naturally, this makes it the first target of Chaos Header.
- Breakout Character: Lidorias is the most iconic monster in Ultraman Cosmos and often appears in merchandise or makes background appearances in other series whenever Cosmos makes an appearance, though obviously being a peaceful monster, she hasn't been placed against any other Ultra heroes.
- Breath Weapon: Breathes a beam of blue energy.
- Expy: Lidorias is based on Litra (note the similarity of their names) from Ultra Q, another benevolent bird kaiju.
- Gentle Giant: Establishing one of the major tropes for kaiju in this series, Lidorias is a purely peaceful monster that does not actively seek to attack humans and is quite friendly with Musashi Haruno.
- Giant Flyer: Like all bird kaiju.
- Superpowered Evil Side: Chaos Lidorias, the first creation of Chaos Header.
- Undying Loyalty: Lidorias is extremely loyal to Musashi. A few times in the series, Lidorias will sense that Musashi is in danger and fly all the way from the Kapuya Islands in order to fight whatever monster is endangering its human friend.
- First Appearance: Chaos Header's Shadow
- Archenemy: Of Lidorias. Though that doesn't stop him from teaming up with her when the Glokers invader Earth Ultraman Cosmos vs Ultraman Justice.
- Art Evolution: The second Golmede is covered in light yellowy blothces around its neck and limbs in comparison to the original Golmede's fully brown skin.
- Breath Weapon: Breathes fire.
- Energy Absorption: Gains this ability as Golmede Beta due to the JADF's cruel experiments on it, absorbing any and all attacks and their energy to increase its strength and that of its flame breath. However, Golmede Beta must constantly replenish its energy as a result, putting the kaiju in a perpetual state of agony as its energy perpetually diminishes to near-fatal levels.
- Everything's Better with Dinosaurs: Which is a given, since he's based off the Ultra Series' very first monster, Gomess.
- Evil Knockoff: Chaos Header creates Chaos Golmede by collecting its DNA and corrupting it into a new creature.
- Expy: Of Gomess from Ultra Q, another dinosaur-like kaiju with a peaceful bird kaiju as its archenemy.
- Non-Malicious Monster: Although Golmede can be a dangerous and violent creature if aroused to anger (such as being awoken b Chaos Header or tortured by the JADF), it is content to keep to itself and prefers to stay away from humans.
- Tragic Monster: Golmede Beta, full stop. EYES is disgusted by the JADF abusing and torturing the monster into a living weapon, and Musashi is especially saddened by the monster's pain and torment, considering it to be the equivalent of a frightened and wounded animal.
- Tunnel King: Gomede prefers to stay underground, only coming up to the surface when disturbed.
- First Appearance: Fly, Musashi!
- Achilles' Heel: Has a small bright red organ on the back of its neck that is particularly sensitive to anesthetic.
- Expy: Its cone-head armour design is inspired by Gabora from the original Ultraman.
- Monster Is a Mommy: It had an egg underground near the airport, which is why it refused to leave the area despite the sounds of airplanes disturbing it.
- Non-Malicious Monster: Musashi discovers that Spittle was rampaging because the sounds of airplanes flying above it were driving it crazy, so EYES and Cosmos decide to move the monster and its egg somewhere else instead.
- Super Spit: As Spittle's name suggests, it relies mainly on its slime-like spit, which has explosive properties.
- Tunnel King: Its a very fast burrower, able to make quick u-turns and escape by digging in a matter of minutes.
- First Appearance: The Fallen RobotVoiced by: Hiroshi Ishi
- Cool Toy: And they don't get much cooler than a kaiju-sized alien robot!
- Good Old Robot: Played with. Igomas' owner got rid of him because he was completely obsolete (the batteries he needed were no longer available) and treated him as garbage to be tossed away. However, the children he befriends consider him their dear friend regardless of his obsolescence, and when Igomas "dies", they decide to keep him around and work towards making it a new battery so future generations will be able play to play with it.
- Humongous Mecha: Correction. Humongous toy mecha.
- Living Toys: Although Igomas is just a toy, he is fully self-aware, has a human-like personality, and is capable of learning and sympathizing with others.
- My Little Panzer: Justified, as his owners were absolutely gargantuan aliens, so Igomas would be mere action figures to them.
- Transforming Mecha: He spends most of the episode is a compacted form resembling a strange-looking building.
- What Measure Is a Non-Human?: Igomas was treated as replaceable merchandise by his alien owners despite being as intelligent as a human, while the kids consider him an equal and are deeply saddened by Igomas' anger at his own obsolescence. Helps that when he runs out of battery, it's treated as a death.
- First Appearance: Revenge of the Fireflies
- Attack Reflector: Chaos Bug can consume energy beams and redirect them through its eyes. It does this to Cosmos' Luna Extract, turning the pacification power into a deadly attack.
- Big Creepy-Crawlies: A firefly kaiju.
- Energy Absorption: In both swarm and kaiju form, Chaos Bug absorbs heat and light energy, allowing it to consume the lasers shot from EYES' fighter jets.
- Extreme Omnivore: At the start of the episode, they consume an entire pickup truck, leaving only the tires behind!
- Red Eyes, Take Warning: Though they become blue when Chaos Bug absorbs energy.
- Worm That Walks: Chaos Bug is a swarm of corrupted fireflies that can merge into a single giant monster.
- First Appearance: Monster Fishing
- Gentle Giant: Later on, as Mogrudon becomes one of Cosmos' monster allies and develops a friendship with fellow burrowing kaiju Bolgils.
- Master of Illusion: Mogrudon's chest is covered in bright patterns that cause hallucinations when it rears up and flashes them at its foes.
- Non-Malicious Monster: Mogrudon was only rampaging because humans had disturbed its sleep, and is otherwise, a peaceful kaiju.
- Prehensile Tail: Its tail is five times longer than its body, allowing Mogrudon to use its tail as a rope to constrict enemies.
- Tail Slap: Mogrudon's preferred tactic. It particularly likes to hide underground with only its tail exposed, using it to slap enemies while the rest of its body remains hidden.
- Tunnel King: Since its a mole kaiju.
- First Appearance: Present from the Sky
- Benevolent Monsters: The Minins are friendly and peaceful creatures that are forcefully transformed into kaiju by aliens.
- Brainwashed and Crazy: When Minin becomes Gamoran, thanks to the aliens who enslaved them.
- Came from the Sky: They come to Earth in the form of strange meteors with their Bio Controllers. Once awoken, the Bio Controllers automatically latch themselves onto the little monsters.
- Expy: The Minins are based on friendly little Pigmon while Gamoran is obviously meant to be the violent Garamon, since Pigmon and Garamon were created using the exact same suit.
- Shock and Awe: The Bio Controller allows Gamoran to shoot lightning bolts from its head.
- First Appearance: The Sleeping Girl
- Barrier Warrior: Inculas can create a field of impassable energy around targets. The wall is flexible but shocks whoever touches it.
- Counting Sheep: Its inspiration.
- Dream Weaver: Inculas manipulates the dreams of those it puts to sleep, placing Ayano in various moments of her childhood when she becomes a victim of its power.
- Extra Eyes: Has eight eyes!
- Forced Sleep: Inculas puts people to sleep through a magical aurora that causes people to fall asleep if they stare at it for long enough.
- Invisibility: Uses this to baffle Ultraman Cosmos in their battle.
- Our Monsters Are Weird: Its a multi-eyed sheep kaiju that puts people into eternal sleep and can transform into a bunch of little pink sheep!
- Voluntary Shapeshifting: Takes on the form of several little pink sheep that wander about its victims' dreams and change the dream whenever it suits them.
- First Appearance: Forest of Friends
- Bigfoot, Sasquatch and Yeti: Looks the part.
- Friend to All Children: Yamawarawa prefers to make itself only visible to children and likes to make friends with any children he meets in the forest. However, he has a hard time accepting the fact that when the kids grow up, they will forget about him and just consider him a fairy tale — something that both angers and saddens him.
- Hulking Out: When angered, Yamawarawa changes his size to that of a kaiju and increases the length of his horns and shoulder spikes.
- I Just Want to Have Friends: The reason why he likes to befriend children he encounters in the forest is because he doesn't like being lonely. It's also why Yamawarawa is saddened when the children he befriends grow up and forget about him.
- Invisible to Adults: According to local legend, though it seems the reality is that he simply likes to hide from adults.
- Tastes Like Friendship: Yamawarawa likes to hand out offerings of fruit to those he wishes to befriend.
- Youkai: Named after a type of mountain-dwelling spirit resembling a hairy one-eyed dwarf.
- First Appearance: The Bronze Devil
- Energy Absorption: Absorbs stress in the form of energy, but too much of it makes it violent.
- Eye Beams: When in its kaiju form, Geshot can fire out the stress it has absorbed in the form of laser blasts. They don't harm people but they do cause people to become stressful and take it out violently. They also come in a limited amount based on how much stress Geshot has absorbed.
- Gone Horribly Right: Humans sealed inside an enchanted glass container because even though it was extremely effective at removing stress, Geshot had no way relieving the stress it absorbed.
- Hate Plague: Its eye beams cause stress so intense that people hit by them become extremely angry and violent.
- Golem: Based on Dogū.
- Make My Monster Grow: Stress causes its size to increase.
- Teleport Spam: In its statuette form, but only if it has absorbed enough stress to become animate.
- First Appearance: Move, Monster!
- Dem Bones: It's a fossil skeleton animated by its own unwillingness to die without seeing its child one last time.
- Everything's Better with Dinosaurs: Though it belongs to a fictional species.
- Expy: Mudon borrows heavily from Seabozu and Skydon, in its appearance and how EYES deals with it respectively.
- Gentle Giant: Mudon's species is stated to be herbivorous and they live in family groups, so the kaiju is completely peaceful. However, it does go berserk in the climax as it is angry that the fossils of its child were taken from it.
- Horn Attack: During its battle with Ultraman Cosmos, it manages to gore him badly enough that Cosmos is forced to retreat!
- Monster Is a Mommy: Turns out to be a mother dinosaur whose child's fossils were taken away from it, so it refused to move from the site they were buried until it became angry at humans for taking away the bones and rampaged. So EYES creates a model of the child's skeleton that Cosmos brings to life.
- No Body Left Behind: Mudon dissolves into a pile of powdered stone after being united with its child.
- Punny Name: Ayano came up with its name from "Don't move" with the syllables reversed, as Mudon doesn't move out of the tunnel it was found in (at least until the episode's climax).
- First Appearance: The Brightness of Life
- Big Creepy-Crawlies: A mayfly, in this case.
- Gentle Giant: It is a peaceful kaiju whose only goal is to lay its egg. This doesn't stop the JADF from trying to destroy it though. Tragically, they succeed, but the egg survives and is sent to be cared for at the Kapuya Islands.
- Meaningful Name: As Fubuki explains, it's name is derived from Greek for "living for only a day".
- Non-Malicious Monster: Ephemera destroys an abandoned factory in its infant stage, but that's the only destruction it causes (with no casualties). It then proceeds to play with the rubble until it reaches adult stage, where it begins to build a nest from the wreckage for the next Ephemera.
- Shock and Awe: Can shoot lightning from its antennae if angered.
- First Appearance: The Daughter of Time Pt. 1
- Achilles' Heel: His eyes are his weak point,as damaging them prevents him from using his powers.
- Blade Below the Shoulder: His arms end in a pair of sword-like appendages that can also shoot laser bolts.
- Evil Is Not Well-Lit: In Waroga's second appearance, Doigaki realizes that the alien only ever attacks at night, leading the JADF to try use bright lights to hinder the invader.
- Hand Blast: Can shoot purple lasers from his claws.
- Invisibility: Waroga uses this in the battle against Cosmos to baffle him. However, his reflection is still visible in the lake nearby, allowing Cosmos to strike him down.
- Mind Control: Uses this on Galbas and Reni by implanting microchips in their brains. However, Reni is more of a sleeper agent, but Musashi's kindness towards her means she never turns against him.
- Red Eyes, Take Warning: His sole facial feature.
- Shock and Awe: Can shoot lightning from his eyes.
- Vader Breath: His "roar".
- Voluntary Shapeshifting: In order to fly, he can transform himself into an orb of purple energy with only his red eyes visible.
- First Appearance: The Daughter of Time Pt. 1
- Brainwashed and Crazy: Thanks to Alien Waroga's Bio-Chip, though EYES remains unaware of this and is completely confused by Galbas' sudden rampage.
- Breath Weapon: Breathes fire.
- Everything's Better with Dinosaurs: Resembles one with large ears added.
- Non-Malicious Monster: Galbas is normally a peaceful monster, but starts rampaging due to Alien Waroga's mind control, although the JADF doesn't care and will have it killed either way.
- Tunnel King: Normally lived underground, so naturally,, Galbas is a good burrower.
- First Appearance: Deep Sea Fight
- Breath Weapon: Breathes a beam of orange energy. It can also shoot that same beam from its shell.
- Combat Tentacles: Jelga can sprout two tentacles from its shell to throttle enemies.
- Gentle Giant: It is a completely peaceful kaiju that simply prefers to stay at the bottom of the sea and do its own thing, only attacking because of Chaos Header corrupting it.
- Superpowered Evil Side: Chaos Jelga, which has no physical differences from the normal Jelga.
- Sea Monster: Sort of a sea snail mixed with an anglerfish.
- First Appearance: The Flying Whale
- Breath Weapon: In both normal form and Chaos form, Jirak breathes a beam of chaos energy.
- Energy Absorption: Chaos Jirak can absorb beam attacks, as Cosmos finds out when he manages to reflect its Breath Weapon back.
- Flechette Storm: Chaos Jirak can spit out a storm of glass swords from its mouth.
- Flying Seafood Special: A whale, in this case.
- One-Winged Angel: Chaos Jirak gains a more humanoid form due to being merged with Akane, with the only whale features remaining being on its backside and the ridges on its chest and shoulders (which resemble a whale's belly).
- The Power of Hate: Chaos Jirak is virtually unstoppable due to Akane's intense hatred and disillusionment at having her hopes and dreams crushed by her friends. It's only after a passionate speech by her friends about following your dreams does Akane finally become calm enough for Cosmos to purify Chaos Jirak.
- Red Eyes, Take Warning: As Chaos Jirak, since it's a Chaos Header monster.
- Shock and Awe: Chaos Jirak can channel electricity through its whip.
- Whip It Good: Chaos Jirak can create a purple energy whip powerful enough to constrict Cosmos, lift him of the ground, and slam him back down multiple times.
- First Appearance: The Alternate Dimension TrapVoiced by: Moriya Endo
- Achilles' Heel: In their first appearance, their most vulnerable spot is the very top of their heads. However, in their reappearance, the Soldier-Types have outfitted themselves with automatic force field projections to block that weak point.
- Doppelgänger Spin: Their super speed can create illusions of themselves.
- Cyclops: Soldier-Type Gigi come in three variations: red-eyed, blue-eyed ones, and yellow-eyed. The former two have only one visor-shaped eye, while the latter has bulging eyes. Scientist-Types like Dr. XX01 only come in a single variation — two small magenta eyes.
- Expy: Of Dada from the original Ultraman. Both have three faces (Dada changes faces at random while Soldier-Type Gigi only has them in giant form), wield shrink rays, speak in Pokémon Speak, have mime-like skin, and names with repeating katakana letters.
- Eye Beams: Soldier-Types can fire beams from their eyes (yellow, blue, or red, depending on the colour of the individuals eyes). In giant form, the Gigi can rotate their three faces rapidly to fire a barrage of beams.
- Fusion Dance: Soldier-Types merge themselves into a three-faced giant, which they typically do to battle Ultraman Cosmos. However, they can also split back into three giant-sized versions of themselves (or re-merge) when needed.
- Gravity Master: Their eye beams can manipulate gravity.
- Intangibility: They can can phase through walls at will.
- Pokémon Speak: They only say "gi-gi" unless they're wearing their translation devices.
- Samus Is a Girl: Dr XX01 is revealed at the last minute to be female. EYES didn't realize it because her translation device had a masculine voice.
- Scientist vs. Soldier: Their entire society is based on this. As Dr. XX01 explains, they are completely divided between Soldier-Type and Scientist-Type, with the two groups divided on whether their species should migrate to Earth.
- Shrink Ray: Their preferred weapon. However, it can also do the reverse if the Gigi wielding it chooses to use it that way. Dr. XX01 uses it to turn Clevergon into a giant to assist Cosmos against the Soldier-Types.
- Super Speed: They move so quickly they look like they're teleporting.
- Translator Collar: The Gigi wear these to communicate with the human characters.
- First Appearance: The Legend of Mt. NibitoVoiced by: Miho Aoyama and Tadashi Katsumata
- Ascended to a Higher Plane of Existence: When Vice-Captain Shinobu explains that the hardships of love that make it all the more worthwhile and that one should not take out their anger for their own failed loves on others' loves, the two souls that make up the demon leave the body as it fades away, soaring higher into the sky until they vanished into the next life.
- Bilingual Bonus: Renki means "Love Ghost" in Japanese, which accurately describes its origins.
- Intangibility: Due to being a phantom, beam attacks phase through Renki's body. However, physical attacks can still harm it.
- Madness Mantra: Renki only says "Why do you disturb us?", referring to its restlessness.
- Our Demons Are Different / Our Ghosts Are Different: Renki is an evil spirit formed from the sorrow and anger of the ghosts of two lovers.
- Sealed Evil in a Can: Was sealed underneath a sacred stone at Mt. Nibito by a powerful samurai, only to be released in the modern era.
- Tragic Monster: Case in point: When Captain Hiura explains the backstory of Renki, Ayano feels great pity for Renki, comparing the story to Romeo and Juliet. Vice-Captain Shinobu also shows great sympathy towards Renki, and it is her speech on the trials of love that puts the ghosts to rest.
- Voice of the Legion: Renki speaks in two voices at once — that of the samurai and that of the princess.
Alien Migelon Reda and Reka
- First Appearance: Lover's StarPlayed by: Takuya Komatsu (Reda), Yukiko Nagatsuka (Reka)
- Human Aliens: The only difference is that their species has pure-white hair.
- Mind Control: Reda wears a bracelet-like device that allows him to mind control others, which he uses on Ayano to help him get into EYES' computers.
- Revenge Before Reason: Reda was so consumed by his hatred of humans for killing his lover that he refused to Musashi's attempts to convince him that this would not have been what Reka wanted. It takes Reka's ghost to come back from the afterlife and reason with him.
- Stars Are Souls: Reda and Reka's souls become a star after they are reunited.
- Together in Death: Reda dies shortly after Angrilla is purified by Cosmos, joining with Reka's spirit and ascending into the night sky with her.
- First Appearance: Lover's Star
- Cephalothorax: Has its eyes on its shoulders and its mouth on its belly.
- Eye Beams: Angrilla fires purple lasers from its eyes that devastate its surroundings.
- The Heartless: Since its the personification of Reda's anger.
- Our Monsters Are Weird: Easily one the most bizarre kaiju designs in the show.
- The Power of Hate: Angrilla is the manifestation of Reda's fury towards the unjust death of Reka, and only stops rampaging and battling Cosmos when Reka's soul helps Reda see the error of his ways.
- Right Hand of Doom: Has a massive claw on his right hand that gives Ultraman Cosmos a tough time during their battle.
- First Appearance: Musashi's Sky
- Breath Weapon: Breathes fire.
- Energy Absorption: Bolgils absorbs any and all energy that it comes in contact with, with a particular fondness for ion plasma. It even eats the energy net EYES tries subdue it with!
- Non-Malicious Monster: Bolgils was only rampaging because it was hungry for a particularly rich source of energy, but is otherwise a completely peaceful kaiju.
- Power Crystal: They're on its back and are the source of Bolgils' energy consumption powers, as Bolgils draws energy through them.
- Tail Slap: Has a very long tail that it uses in battle, including swatting planes out of the sky.
- Tunnel King: It burrowed all the way from France to China to Japan in a matter of months, chasing after the ionic energy of a new engine being developed by the SRC.
- First Appearance: The Battle with the Tech Booster Pt. 1
- Breath Weapon: Breathes fire.
- Evil Knockoff: After Ultraman Cosmos purifies Parastan, Chaos Header uses the chaos energy collected from Parastan's corrupted form to create a second and separate Chaos Parastan to stall Cosmos.
- Hand Blast: Can shoot white stun bolts from its hands.
- Riddling Sphinx: Parastan's motif in both normal and chaos form. The civilization she once protected also bears some similarities to Egypt, such as having obelisks and a hieroglyphic language that the characters have to decipher.
- Sacrificial Lion: She's killed by the Scorpis swarms when they devastate Juran. Musashi arrives just in time to see her corpse and the devastated landscape.
- Superpowered Evil Side: Chaos Parastan, which is how EYES first encounters her as.
- First Appearance: Luna vs Luna
- Cyclops: Only has a single yellow eye.
- Non-Malicious Monster: Gelworm was just trying to get back to the meteorite it came from without any intention of harming people because a female of some relation it loves (the characters ponder whether it was its mate, mother, sister, or girlfriend) is still trapped on the meteorite.
- Sizeshifter: The reason why Gelworm is able to take on the form of humans despite being so tiny that people can't even feel it crawling on their shoulder. Eventually, it goes berserk in the climax and turns itself kaiju-sized.
- Shapeshifter: Gelworm can take the form of other beings by absorbing a tiny bit of their DNA. During the episode's fight, it does this to Ultraman Cosmos, but it lacks Cosmos' powers.
- First Appearance: Warm Memories
- Combat Tentacles: The tendrils on its shoulders can transform into these to constrict foes.
- EMP: All electronics within a large radius of Gragas short-circuit due to its massive electromagnetic field.
- Energy Absorption: Gragas feeds on electricity, which it uses to increase its size to battle Ultraman Cosmos.
- I Surrender, Suckers: Does this to Cosmos by fleeing, prompting Cosmos to leave until Gragas blasts him from behind with electric bolts.
- Invisible to Normals: The only person who can see Gragas for most of the episode is a friend of Ayano named Jun. Even then, it was solely because a car accident had put Jun in a coma, allowing his spirit to wander about and see other invisible beings.
- Shock and Awe: Gragas can shoot lightning from its hands and shoulder tentacles.
Alien Srayu Lamia
- First Appearance: The Alien GirlPlayed by: Becky
- Healing Hands: Uses this ability to extract a bullet when Dr. Kawaya is shot protecting her from JADF agents.
- Human Aliens: Dr. Kawaya notes that her anatomy is almost identical to a human's.
- Well-Intentioned Extremist: She sought to bring peace to the universe without ever considering that not all individuals of a species are completely evil and violent. Fortunately, the example from Dr. Kawaya leads her to realize the error of her species' ways.
- First Appearance: The Alien Girl
- Chest Blaster: Equipped with a laser machine gun in its chest.
- Combining Mecha: Guinje can split up its various components, transforming into several spaceships to attack multiple enemies.
- Humongous Mecha: Of Lamia.
- Invisibility: Its spaceship form is equipped with a cloaking device.
- The Juggernaut: Guinje gave Ultraman Cosmos a serious challenge, and was completely immune to all the attacks that the combined forces of Cosmos, EYES, and the JADF threw at it. Fortunately, Lamia's change of heart stopped its rampage, as she called it to take her back home.
- Right Hand of Doom: Its left hand is a massive pincer.
- Transforming Mecha: Guinje's normal form is a spaceship.
- First Appearance: A Space Monster is Born on Earth
- Gentle Giant: Zaranga is a completely peaceful creature, so the only work EYES and Cosmos had to do was get it to the ocean safely without anyone getting hurt.
- Playing with Fire: Zaranga's body temperature increases the closer it gets to childbirth, causing it to scorch the ground with its footsteps, burn anything in comes in contact with, and gain the ability to breath fire. Because, this intense heat can be fatal to her, it needs to give birth in the ocean to cool off.
- First Appearance: Strength and Power
- Breath Weapon: Breathes a poisonous gas with explosive properties.
- Evil Knockoff: Chaos Eligal, which Chaos Header creates to battle Cosmos after Eligal is subdued. Later, Chaos Header takes on the form of Chaos Eligal to lure Cosmos into a trap.
- Non-Malicious Monster: Eligal is normally a passive kaiju, but was rampaging due to the pain of trying to resist Chaos Header taking over its body. While EYES and Cosmos are able to save Eligal, it dies shortly afterwards from the exhaustion of its struggle and pain.
- Poisonous Person: Eligal has two tubes sprouting from its back that curl over its shoulders. These shoot poison gas.
- Superpowered Evil Side: Chaos Eligal becomes this in the monster's reappearance in the final battle.
- First Appearance: Ultraman Cosmos: First Contact, Eclipse (in series)Voiced by: Hiroko Sakurai
- Affectionate Nickname: Musashi calls him "Gon" for short.
- Cool Toy: Was modified from a toy robot that the 10-year-old Musashi owned.
- Do-Anything Robot: Despite being modified from a toy, Clevergon is equipped with a wide variety of gadgets, including a scanning antennae on his head, a TV screen inside his belly, extending legs, and the ability to hover.
- Expy: His design and name are modeled after Crazygon from Ultraseven. And when turned into Chaos Clevergon, he even starts "eating" cars.
- Make My Monster Grow: Twice. Clevergon is turned giant by Chaos Header and by a Gigi scientist, although in the latter case, this was to allow the robot to assist Cosmos against the Monster of the Week.
- Red Eyes, Take Warning: In his giant forms, he gains red eyes.
- Right Hand of Doom: Clevergon has asymmetrical arms, with the right one being a massive pincer and the left one being shrunken and vestigial.
- Robot Antennae: Hidden inside its head. It has the ability to scan other lifeforms and the surroundings, as well as receive messages.
- Robot Buddy: Of Musashi in First Contact, although the two maintain their friendship after Musashi gives him away.
- Superpowered Evil Side: As Chaos Clevergon, in which it gains growths all over its body that resemble patterns on Chaos Header's physical forms.
- Tin-Can Robot: Has a boxy body shape with stumpy legs.
- Undying Loyalty: Case in point — when Chaos Header targets Musashi for corruption, Clevergon leaps in to push him out of the way and absorb Chaos Header, transforming it into Chaos Clevergon.
- First Appearance: The Monster Hunter
- Breath Weapon: Breathes fire.
- Cyborg: As Neldorand Mechalator. However, the implants are slowly killing the monster due to their alien origin and the abuse Neldorand is subjected to during the transformation.
- Everything's Better with Dinosaurs: Strongly resembles one.
- Gentle Giant: Neldorand is a completely peaceful kaiju that prefers to remain underground, but circumstances force the creature on to the surface where it becomes a target for those interested in hurting it.
- Shout-Out: Neldorand Mechalator appears during a sunset and its subsequent battle with Cosmos mimics Ultraseven's battle with Alien Metron (which also took place at sunset).
- Superpowered Evil Side: Chaos Neldorand, who gains armor on its head and shoulders.
- Red Eyes, Take Warning: As is typical of Chaos Header-infected monsters.
- Tunnel King: Like Golmede, Neldorand is primarily a subterranean kaiju, hiding underneath rocky and mountainous regions away from any who would dare to bother it.
- First Appearance: Wrath of the Sea God
- Dishing Out Dirt: Reycura can launch explosive boulders from its fists.
- Gaia's Vengeance: Created to punish those who pollute the ocean. However, its creators do allow those who awaken it to redeem themselves by taking the mystic conch that controls Reycura and placing it at the god's stone shrine to deactivate the monster.
- Golem: A huge statue of an ocean deity made to carry out the god's wrath and will.
- Living Statue: Since it's meant to be the civilization's sea god in statue form that's usually half-buried at the bottom of the ocean.
- Spring Jump: Despite being a statue, Reycura was able to leap straight from the bottom of the sea to land in a single jump.
- First Appearance: The Magic Stone
- Cyborg: As Ragstone Mechalator.
- Cyclops: Has only one orange eye.
- Emotion Eater: Ragstone consumes the emotions of those it mind controls, turning them into pseudo-robots that gain increased intelligence or athleticism in return. It becomes more powerful the more emotions it consumes and its spaceship can gather emotion energy to further power up Ragstone.
- Eye Beams: Shoots a beam of energy from its eye that drains emotions and mind controls people.
- The Juggernaut: It was completely unfazed by Cosmos Eclipse Mode's Naybuster Ray!
- Mind Control: What it does to humans in order to feed on their emotions.
- Our Monsters Are Weird: It's a one-eyed alien rock monster that feeds on emotions and turns people into mindless zombies!
- Rock Monster: An extraterrestrial one.
- Villain: Exit, Stage Left: Cosmos manages to purify Ragstone, driving out all the emotions it has consumed back into its victims bodies, forcing the monster to go back into its spaceship and leave Earth. Ragstone does end up returning when Alien Nowar turns it into a cyborg though.
- Voluntary Shapeshifting: It can disguise itself as a small orange stone with a single eye and small spikes, allowing it to still fire its eye beams. Its spaceship disguises itself as a bizarre-looking temple for its "worshipers" as well.
- You Have Failed Me: After Ragstone flees Cosmos, Alien Nowar uses the same torturous methods of creating cyborgs he does on other monsters to create Ragstone Mechalator as punishment.
- First Appearance: The Mountain of Youkai
- Archenemy: Of Yamawarawa.
- Badass Normal: Despite possessing no powers, Mahagenom was strong enough that Ultraman Cosmos and EYES needed help from Yamawarawa to defeat him, and even then, the best they could do was simply imprison it again.
- Red and Black and Evil All Over: Almost completely red and black, and indeed, very much evil.
- Sealed Evil in a Can: Was imprisoned by Yamawarawa long ago underneath a mountain near Hidaka Village, but eventually escaped to rampage again. However, only Yamawarawa knows the ritual to re-imprison Mahagenom.
- Youkai: Dosn't seem to be based on any examples from real-world folklore though.
- First Appearance: Fubuki Retires?!
- Cyborg: As Taildas Mechalator. However, it dies shortly afterwards as the transformation is extremely agonizing and the alien nature of the cybernetics are harming the monster's body.
- Extra Eyes: Has six eyes, although as Chaos Taildas, they merge into two eyes.
- In a Single Bound: Able to leap good distances, almost like a frog.
- Non-Malicious Monster: Although Taildas is first seen rampaging without any explanation, the kaiju is not a malevolent creature — just a panicked one.
- Superpowered Evil Side: Chaos Taildas.
- Red Eyes, Take Warning: The sole difference of Chaos Taildas from the normal one is its red eyes
- Tail Slap: As his name suggests, his preferred weapon is his tail.
- Tunnel King: Taildas is primarily a subterranean monster, and he spends a lot of the episode burrowing to flee from things that frighten it.
- First Appearance: Old Man Alien
- Achilles' Heel: The only weak spot on Hellzking's body is his neck. Damaging that area will cause Hellzking to malfunction.
- A.I. Is a Crapshoot: Hellzking Revised remembers the purpose of the original Hellzking, causing the robot to go rogue.
- Arm Cannon: Is equipped with laser cannons inside its wrists that it can reveal and hide at will. When upgraded to Hellzking Revised, the JADF replace these with SOAAG disintegration cannons capable of evaporating even a mountain.
- Cyber Cyclops: Has only a single yellow eye.
- Energy Absorption: Hellzking can create tendrils from its body in spaceship form that sap up electricity, allowing it to gain enough energy to transform into its robot form.
- Humongous Mecha: A gigantic organic robot, to be exact.
- Organic Technology: Doigaki's analysis of the monster's composition reveals that Hellzking is less of a machine and more of a living being with robotic qualities.
- Transforming Mecha: Hellzking's usual form is a three-pronged spaceship. However, to transform, it completely restructures itself rather than sprouting limbs and a head lie most examples.
- First Appearance: Old Man AlienVoiced by: Shoichiro Akaboshi (also human form actor)
- Aliens Among Us: The problem for Musashi is he doesn't know who's the alien!
- Becoming the Mask: The Beryl in Tadao's body had come to Earth with the same intentions as his companion, but taking over the body a family man, he came to love Tadao's daughter and wife as they were his own and eventually defected.
- The Dog Was the Mastermind: The invader turns out to be in the body of an incidental police officer that Musashi, Tadao, and Kaori ran into a few times. However, Tadao is also an Alien Beryl — just no longer on the same side as his companion.
- Starfish Aliens: Their true form is a bizarre floating creature with tentacles of energy.
- Trademark Favorite Food: The Beryl aliens really love takoyaki.
Alien Greenbelt Puratea
- First Appearance: The Green FugitivePortrayed by: Etsuko Mizutani
- Last of Her Kind: She's the last surviving Alien Greenbelt after the Exterians managed to wipe out the rest in a war.
- Plant Aliens: According to supplementary sources.
- We Hardly Knew Ye: She only appears for a single scene at the start of the episode, kickstarting the story.
- Whip It Good: In an attempt to defend herself from Exter Raider, she creates a green energy whip with her hands, though it does little to heed the android bounty hunter.
- First Appearance: The Green FugitivePortrayed by: Koichi Sugisaki
- Bounty Hunter: The unseen Exter aliens hired him to kill all their enemies.
- Deceptively Human Robots: Technically Human Alien robots, but for an advanced killer android, he's completely emotionless and unquestioning in orders like a lesser robot.
- Implacable Man: Fubuki shot him in the back several times to no effect!
- Summon Bigger Fish: Immediately calls Sidebackter to Earth upon his death.
- Super Strength: Able to pick up a car with his bare hands.
- First Appearance: The Green Fugitive
- Cool Spaceship: What else do you call a bounty hunter's spaceship that can turn into a giant robot?
- Eye Beams: Sidebackter's primary ability is to fire blue lasers from its "eye", which is derived from its spaceship form's weaponry.
- Humongous Mecha: A giant spaceship kaiju.
- Spell My Name with an "S": Also called Sydevakter.
- Transforming Mecha: Sidebackter is Exter Raider's spaceship, sprouting arms and legs when it needs to walk about.
- First Appearance: Friend
- Breath Weapon: Breathes fire.
- Gentle Giant: Delgoran is a friendly and peaceful kaiju that was very much tolerant of the aliens who were studying it and prefers to mind its own business.
- Giant Flyer: Its ray-like wings allow it soar through space.
- Spin Attack: Can spin itself rapidly to churn up blinding clouds of dust.
- Superpowered Evil Side: Chaos Delgoran, which can retract the wings at will to use normal arms, thanks to Chaos Header's monster-mutating powers.
- First Appearance: FriendVoiced by: Mami Matsui
- He Who Must Not Be Seen: He and his father wear robes that conceal their bodies for the episode, and all shots of him are from behind or the side. Only at the very end does he finally remove his hood, revealing white hair and pointy ears, but we see very little beyond that.
- First Appearance: Puppet MonsterVoiced by: Tetsu Inada (also human form actor)
- Lack of Empathy: Alien Nowar cares nothing about the horrifying pain that is inflicted upon the monsters he turns into cyborgs. In fact, he is legitimately baffled at the fact that humans have not considered doing this to their planet's kaiju.
- The Man Behind the Man: His species had sent Ragstone to Earth to study the planet.
- Master of Illusion: Creates the illusion of a large group of children playing around a factory to lure Musashi into a trap.
- Mirror Monster: Can travel between mirrors and reflective surfaces, as well as project images onto them (which he does to show Musashi what his species is doing to Neldorand).
- The Mirror Shows Your True Self: In his human disguise, he still takes on his true form in front of a mirror. Also, shooting his reflection will harm him.
- Vile Villain, Saccharine Show: In a show that's notably Lighter and Softer, Alien Nowar stands out as one of the darkest antagonist in the franchise. Enslaving, torturing, eventually killing hundreds of innocent monsters for their own personal gain.
- First Appearance: The Amusement Park LegendVoiced by: Junko Shimakata
- Aliens Among Us: It turns out in the end that Mugera is actually an alien and his species has come back to Earth to to pick him up with the closing of the amusement park.
- Friend to All Children: Mugera likes to cheer up sad children and fix their broken belongings.
- Healing Hands: His main power is to heal wounds or fix broken items with his hands.
- Invisible to Adults: Mugera will instantly vanish if any adults appear nearby, though he doesn't always do it fast enough.
- Our Fairies Are Different: Considered to be a fairy by the people at the amusement park it lived in, but is in fact an alien.
- First Appearance: The Miraculous FlowerVoiced by: Eisuke Tonoda (also human form actor)
- Aliens Among Us: The villagers are fully aware that he is an alien, but they warmly welcome him as one of their own.
- The Blank: In his true form, he is completely faceless, having one side completely smooth and featureless, the other being a series of strange patterns.
- Brainwashed and Crazy: As a result of his flowers being tainted by the meteorite's dust, he briefly becomes a rampaging giant whenever he gathers from them.
- Hand Blast: Can shoot purple lasers from his hands capable of causing fairly large explosions.
- Mercy Kill: He begs Musashi to turn into Cosmos and kill him to put an end to his insanity episodes, but Musashi refuses, saying that Cosmos cannot kill other beings without reason. Instead, Cosmos purifies both Kyulia and his flowers, allowing him to remain as village doctor for many more years to come.
- Nice Guy: He had actually just landed on Earth by accident, but came to love the people of the planet as much as Ultraman Cosmos does,. He is also more concerned about what his berserk episodes will do to the villagers than him.
- Really 700 Years Old: He's been living among the villagers for 300 years.
- First Appearance: Sorceress of the SkyVoiced by: Junichi Kawamoto (male), Nami Ishibashi (female)
- Bizarre Sexual Dimorphism: Let us make this as clear as possible — the male is the Ultraman-like humanoid with the pointed chest and the female is the bloodsucking pair of wings with the red eyes, and they are the same species.
- Brains and Brawn: The female is the brains (she does much of the communication with the human characters) and the male is the brawn (he mainly does the fighting with Ultraman Cosmos).
- Driven to Suicide: The original male dies this way
- Eye Beams: The female has this ability.
- Hand Blast: The male can shoot laser beams from his claws.
- Mind Control: The female possesses the ability to hypnotize humans into doing her bidding, although taking the form of their loved ones certainly helped out.
- Our Vampires Are Different: The female drinks blood to survive (by biting the victim's neck) and can impersonate other people to get around on Earth, all while acting as a symbiote with the humanoid male.
- The Symbiote: The female lives like one of the male's back, allowing the male to fly. She can separate as she wishes to operate on her own.
- Wolverine Claws: The male is equipped with these.
- First Appearance: The Snow of Space
- Big Creepy-Crawlies: Resembles a giant firefly.
- Breath Weapon: Breathes fire.
- Female Monster Surprise: After Alukela dies, it turns out to have been a mother as its body releases thousands of Snow Stars (the creature's larval stage) that fly into space.
- Non-Malicious Monster: Alukela does destroy a few buildings and attack EYES, but only because the team attacked it. In fact, as Alukela is dying, its cells suddenly begin to evolve, leading EYES to try destroy it out of fear of it metamorphosing into something worse and consequently causing the monster to regain all its strength and begin rampaging again.
- Spell My Name with an "S": Also called Alkela.
- First Appearance: Monster Smuggling!?
- Everything's Better with Dinosaurs: At the very least, it strongly resembles one.
- Make My Monster Grow: Vadata is only about 50 centimeters tall when first discovered by the smugglers, but by injecting it with powerful tranquilizers, it ends up growing to 59 meters! Unfortunately, it also makes him more violent.
- Non-Malicious Monster: Vadata is a peaceful monster, but poisons or drugs in its body cause it to become berserk, especially if they're very strong chemicals. Cosmos thus defeats Vadata by purifying the tranquilizers out of its system.
- First Appearance: Enemy of Chaos
- Breath Weapon: Mazalgas can spit blue orbs of energy that explode in the air, sending a shower of smaller energy orbs raining toward the ground and exploding. As Chaos Mazalgas, these are switched out for bolts of chaos energy.
- Energy Absorption: Mazalgas' most potent power is its ability to absorb any form of energy by opening up the top of its head to suck it in. It used the ability to consume EYES' energy net, but more significantly for the team was its ability to even consume Chaos Header's essence without being corrupted, thanks to its Chaos Chimera enzyme. However, this power is weakened when Mazalgas is fatally weakened by the JADF's attacks.
- Non-Malicious Monster: Mazalgas is described by Musashi as "Chaos Header's natural enemy", but the creature is solely interested in finding food, not in the battle between good and evil. Otherwise, the worst Mazalgas does is smash a JADF ammunitions plant when Chaos Header lures its predator over in order to frighten the JADF into attacking the monster.
- Rolling Attack: Can curl itself into a ball-like form in order to fly through space.
- Superpowered Evil Side: Chaos Mazalgas, the result of the monster being injured to the point of being unable to use its Energy Absorption powers, thus letting Chaos Header possess it.
- Tail Slap: Liked using this ability in combat.
- First Appearance: Transformation Impossible!?
- Barrier Warrior: Like June, Zageru can produce a force field, but this ability is nullified by Earth's atmosphere.
- Breath Weapon: Breathes fire.
- Non-Malicious Monster: Most of the rampaging that Zageru does is solely because it is easily scared.
- Pet Monstrosity: Of June
Alien Koise June
- First Appearance: Transformation Impossible!?Portrayed by: Shiori Kanzaki
- Barrier Warrior: Her species has the natural ability to produce force fields, though this is rendered null by Earth's atmosphere.
- Human Aliens: Or at the very least, we never see her in her true form.
- First Appearance: Future Monster
- Gentle Giant: Arados are peaceful monsters that wander through time in family herds.
- Gigantic Adults, Tiny Babies: The infant is only about a meter tall, but the adults stand at around 40 meters.
- Time Master: Arados' primary powers, which are all concentrated in its shell patterns. It can open up portals to travel through time, freeze time in a single area, warp other creatures through time, and even reverse time on a target to bring them back from the dead!
- First Appearance: Human Transporter
- Doppelgänger Spin: Tablis' sole ability is to create an intangible illusion of itself from any distance, meaning the monster doesn't have to take actions, only the duplicate.
- Gentle Giant: A completely peaceful creature that only seeks to be reunited with a human it befriended so long ago. However, it (or rather its illusion) does begin to rampage when EYES attempts to use a hologram of Kana to fool the monster.
- First Appearance: The Final TestPortrayed by: Hitomi Akimoto
- Forced Sleep: She can shoot out a beam of yellow energy from her hands that puts targets to sleep. She uses this to quiet Lidorias when the bird monster becomes alarmed by her presence.
- Human Aliens: It's not clear if this was a form she had taken or not though.
- The Man Behind the Man: Her species had turned the Minins into Gamorans sent them to Earth to test if humans could solve problems peacefully, but since Ultraman Cosmos had interfered with the previous test, it needed to be done again.
- First Appearance: The Kappa's Village
- Friend to All Children: While his closest friend of all the villagers was actually an old man, Kawanoji loves to play with the children in sumo wrestling games.
- Hulking Out: Kawanoji can turn himself giant-sized when angered, though during the fight he makes a deal with Cosmos that if the hero wins, he will shrink himself back to normal size.
- Kappa: There have been a few kappa-like kaiju in the franchise, but Kawanoji is an example of the real deal. He even sumo wrestles Ultraman Cosmos!
- Non-Malicious Monster: Kawanoji is a very peaceful kappa, only going on a rampage when provoked by the human characters.
- First Appearance: The Door of Snow
- An Ice Person: Gruanfan's arrival when the Door of Snow opens is foretold by sudden heavy snowfall, even in the summer.
- Gentle Giant: Gruanfan is a completely peaceful monster that does no fighting or attacking. The only reason why Musashi turns into Cosmos is to help Gruanfan go back through the Door of Snow.
- Time Master: Gruanfan freezes time when it enters the physical world because of the incompatibility with the Memory World. While present time is frozen, the Memory World appears to whoever summoned it, replaying past time for them and turning the summoner into a memory once Gruanfan goes back through the Door of Snow. It is possible to avoid being frozen by Gruanfan though, if one closes their eyes the moment the monster enters the physical world.
- First Appearance: Cry of the Earth
- Breath Weapon: Breathes fire.
- Giant Flyer: Amazingly, Dolba is able to fly, despite its tiny wings.
- Long-Lost Relative: Dolba is related to Galbas, although in what way isn't stated.
- Superpowered Evil Side: Chaos Dolba, who has bigger wings and a large crest on his head.
- Red Eyes, Take Warning: Like all Chaos Header victims.
- Tunnel King: Burrows very rapidly.
From Ultraman Cosmos: First Contact
- Played by: Taro Kawano (Captain Akatsuki), Emiri Nakayama (Kyoko), (Kimoto), Takanosuke Toukai (Kido), Mainoumi Shuhei (Raiden), Shingo Kazami (Ichinose), Hitomi Takahashi (Sakaguchi)
- Played by: Ikkei Watanabe
- Armies Are Evil: "Evil" may be a bit of a strong word to describe Shigemura and the JADF, but their hyper-militaristic approach to all monsters is always portrayed as stupid at best and heinous at worst.
- Armies Are Useless: More often than not Shigemura and the JADF make things worse against the weekly monsters, thanks to their highly aggressive natures.
- Played by: Hidekazu Akai
Musashi's childhood friend, who gets caught up in the plot of the Baltan Shirubyi. She returns in Ultraman Cosmos 2: The Blue Planet, as an adult where she befriends the Aliens Gyashi Jin and Shau, and in Ultraman Cosmos vs. Ultraman Justice: The Final Battle, to help EYES rescue Musashi.
Alien Baltan Basical
- Voiced by: Daisuke Gori
For tropes applying to the Baltans in general, see the Ultraman character sheet
- Alas, Poor Villain: Everyone feels pretty bad for him when he dies, including Ultraman Cosmos and the human characters, as they sympathize with his motives for trying to take over Earth and realize that with his death, the Baltan children are effectively leaderless and defenseless. Cosmos even helps the Baltan children with taking his body back to his homeworld for burial. To push the point further, Basical cries in his dying moments, fearing for the future of his people with his death.
- An Ice Person: Can shoot freezing beams from his claws that cause several fighter jets to shatter into pieces.
- Anti-Villain: Ultimately, he had the future of his species' children in his heart and mind when he decided to invade Earth.
- Art Evolution: Being an updated version of the classic Ultraman foe, Basical has larger horns resembling those of a stag beetle, as well as a more armored body, meant to resemble an insect's exoskeleton. He also sports cicada-like wings tucked onto his sides, sharp-ended feet, and insect-like joints. His proboscis also sticks out unlike other Baltan suits.
- Big Bad: Of Ultraman Cosmos: First Contact.
- Blade Below the Shoulder: As Neo Baltan, he gains a massive sword in place of his right arm. Said sword can also hurl glass blades.
- Healing Factor: When Ultraman Cosmos first enters Corona Mode, he tears off Basical's blade arm, only for it to regrow into a claw.
- Last of His Kind: He's the last remaining adult Baltan.
- One-Winged Angel: For his final battle with Ultraman Cosmos, he transforms himself into the monstrous Neo Baltan, gaining a more metallic appearance and a slew of new abilities.
- Shock and Awe: Can create lightning storms, but in Neo Baltan form, his energy whip can channel electric shocks.
- Shout-Out: His backstory borrows many elements from Baltan's appearance in the second episode of Ultraman, such as having destroyed his own world and deciding to replace it with Earth, as well as having a spaceship with millions of smaller Baltans on board following behind him.
- Spike Shooter: As Neo Baltan, Basical can create shoot out a storm of flechettes from his shoulders.
- Tragic Villain: Despite his ruthless determination to destroy the human race and seize Earth for his own people, Basical is ultimately a victim of circumstance, as it was his generation's selfishness and idleness that led to the destruction of his homeworld and forced him to bring the Baltan children in search of a new home.
- Well-Intentioned Extremist: Basical never considered that humanity and the Baltans could coexist peacefully, as he believed humanity was doomed to the same fate as his species unless he stopped them.
- Whip It Good: As Neo Baltan, he can create an energy whip from his left hand.
Alien Baltan Shirubyi
- Voiced by: Rina Mogami
For tropes applying to the Baltans in general, see the Ultraman character sheet
- Invading Refugees: Like all the other Baltan children, she was just a refugee leaving a devastated world for a new one.
- Punny Name: Shirubyi is a play on "Chibi", which describes her design.
- Super-Deformed: Her design is meant to be a chibi version of the original Baltan.
- Super Speed: Although possessing bodies is not a new ability for the Baltans, giving the host super speed is.
- X-Ray Vision: An ability not seen in any other incarnation of Baltan.
A legendary dragon associated with the god of medicine. He was awoken by Basical to grab the attention of humanity, making him the first monster to appear in the series' timeline. Don Ron also appears in Ultraman Cosmos Vs Ultraman Justice: The Final Battle, where he, Lidorias, Golmede, and Bolgils battle some Gloker Pawns attacking Japan.
- Armless Biped: Doesn't stop him from being able to burrow though.
- Breath Weapon: Breathes fire.
- Non-Malicious Monster: Like many kaiju in this series, Don Ron is a peaceful creature that prefers to be left alone. The only reason why it awakens and goes on a rampage is due to Basical taking over its body.
- Our Dragons Are Different: An armless biped associated with the god of medicine and with a head combining the features of Japanese Dragons and Chinese Lions.
From Ultraman Cosmos 2: The Blue Planet
- Voiced by: Daisuke Gori
- Big Bad: Of Ultraman Cosmos 2: The Blue Planet.
- Blade Below the Shoulder: Sandros forms these after he cloaks Earth in darkness in order to slash at the blinded Ultraman Cosmos.
- Breath Weapon: Sandros can open up his jaw three ways in order to spit out a red orb of explosive energy.
- Casting a Shadow: Sandros can produce a black smoke from his body that cloaks the planet in pitch darkness, rendering enemies completely blinded. He also travels through space by cloaking himself in the smoke.
- Evil Sounds Deep: Thanks to being voiced by Daisuke Gori, Sandros has a low and menacing voice.
- Hand Blast: He can shoot energy blasts from his hand ranging from missile-strength to being able send opponents flying for hundreds of yards.
- Mind over Matter: Displayed telekinetic abilities.
- Monster Lord: He commands the Scorpis.
- Omnicidal Maniac: Sandros seeks to reduce the entire universe to nothing more than a lifeless wasteland of endless deserts.
- Red Eyes, Take Warning: Has two red eyes that are among the few things visible in his darkness during the battle with Cosmos.
- Social Darwinist: Espouses his philosophy when he first meets Cosmos.Sandros: The strong will destroy the weak, that is a universal rule!
- Walking Wasteland: Sandros' black smoke that disintegrates non-organic material in a similar manner to the Scorpis' withering orbs.
Sandros' minions, the Scorpis are alien kaiju that travel across the universe with the sole purpose of transforming any planet they encounter into a lifeless desert under the bidding of their master.
- Beware My Stinger Tail: They possess long pincer-tipped tails they use to wound opponents in battle.
- Breath Weapon: The Scorpis breathe a red beam of energy that instantly withers and disintegrates whatever it hits.
- Giant Flyer: In order to travel through space, the Scorpis can switch out their legs for wings.
- Horde of Alien Locusts: The Scorpis travel in large numbers from planet to planet, extinguishing all life.
- Walking Wasteland: Like Sandros, the Scorpis leave only blasted ruins behind on any planet they visit.
Alien Gyashi Jin and Shau
- Played by: Mai Saito (Shau), Masatoshi Matsuo (Jin)
- Anti-Hero: Jin, who was very distrusting of humans to Fantastic Racism levels, despite also opposing Sandros and the Scorpis like Musashi and SRC were. He does eventually realize his misguidedness though.
- Hand Blast: Both Jin and Shau were able to fire energy bolts from their fingers. These bolts can do a variety of things, but Jin mainly used them to try kill humans.
- Human Aliens: Unlike humans though, they're primarily an aquatic race. Shau is actually seen transforming into a mermaid a few times, so it's possible that was her true form.
- Our Mermaids Are Different: As mentioned earlier, Shau can turn her legs into a fish's tail at will. Musashi actually mistakes her for one when he first spots her, and considering her species' association with the ocean, it could be said that they're essentially alien merpeople.
- Red Oni, Blue Oni: The humorless and skeptical Jin is the blue to the more sympathetic and cheery Shau's red.
A species of stingray-like kaiju that dwells in the oceans around Saipan Island. They befriend Jin and Shau, gaining the ability to merge with them in order to battle the Scorpis.
- Breath Weapon: They breathe explosive orbs of red energy.
- Fusion Dance: Jin and Shau can call forth a Reija and merge with them, gaining control over the monster and giving it legs to move on land and arms to battle enemies.
- Gentle Giant: Reija are completely peaceful monsters that eagerly assist the humans and Gyashi against the forces of Sandros and his Scorpis.
- Giant Flyer: The Reija can fly in both normal form and limbed form.
- Sea Monster: Based on stingrays.
- Portrayed by: Osamu Ryutani (voice of Ultraman Justice), Kazue Fukiishi (as Julie)
- Above Good and Evil: An extremely rare Ultraman example. Ultraman Justice is better described as a protector of order rather than of a warrior for goodness, willing to battle both villains like Sandros and heroes like Cosmos if they pose a threat to peace of a universal scale. However, he does eventually learn the importance of protecting life.
- Aloof Dark-Haired Girl: His human form.
- Anti-Hero: In contrast to the more messianic Cosmos and most obviously shown in the third movie.
- Bash Brothers: With Ultraman Cosmos. Helps that both of Justice's modes have at least one combination attack with Cosmos.
- Character Development: In the third movie, Justice spends from The Stoic enforcer of Delaxion to finally understanding what it means to protect.
- Comfort Food: Seems to enjoy eating the sweets that he received from a human girl.
- Easily Forgiven: Kills Cosmos at the early of the third movie, but when said Ultra revived, the first thing he did is replenishing Justice's energy. Even the red Ultra was astonished at his forgiveness.
- Expy: To Ultraman Agul's human host, whose racism towards humanity stems from the influence of a great cosmic entity. Yet the two eventually joined the titular Ultraman in facing said antagonist.
- Foil: Whereas Ultraman Cosmos is a Friend to All Living Things who values life above all else, Justice is more likely to kill his enemies, and also care not for life — he destroys anyone who disrupts cosmic peace regardless of whether they are good or evil.
- Gender Bender: The only male Ultra to have a female human identity. This is because he views justice as above gender, so he doesn't consider what gender he appears as to be important.
- Hero of Another Story: Is the true main character of Cosmos VS Justice.
- In a Single Bound: Julie can do this quite easily during a fight against several thugs.
- Informed Ability: His Standard Mode has lots of it.
- It's All My Fault: He spares Sandros for 2,000 years back when he was harmless, only for the monster to become what he is today. He is still affected by this mistake.
- Kick Chick: Subverted that it was his female human form, but nonetheless managed to do so by moping the floor against several thugs at night.
- Multiform Balance: Like Cosmos, although he has less forms.
- Redemption Promotion: His understanding of true justice and determination to stop Delaxion's forces allows him to gain Crusher Mode.
- Telepathy: Julie's Establishing Character Moment has her communicating with Musashi.
- Took a Level in Kindness: As noted above, Justice begins as an Anti-Hero interested only in protecting the cosmic order, but his interactions with Cosmos and humanity led him to realize the importance of protecting life.
From Ultraman Cosmos vs. Ultraman Justice: The Final Battle
By the time of the third film, the original members of EYES have been transferred to different branches of SRC, leaving Fubuki as the captain of a new team in the battle against Delaxion and its forces. This new team is made of Eiichi Kashima, Natsuki Kuramoto, Kazuomi Watarai, and Ryojiro Shiyoda.
- Voiced by: Chisako Hara
- Anthropomorphic Personification: Of universal law.
- Anti-Villain / Hero Antagonist: She's somewhere between both, as although she serves as the movie's Big Bad, her causes are just (if lacking in empathy for living beings). She was responsible for sending Justice to destroy Sandros in the previous movie, but ultimately she cares more about universal order than good and evil.
- Big Bad: Of Ultraman Cosmos vs. Ultraman Justice: The Final Battle.
- Energy Being: She is essentially a gigantic white orb of light surrounded by an almighty aura.
- Well-Intentioned Extremist: She prophesied that the inhabitants of Earth (humans, animals, and monsters) would become cosmic threats in the future. So while she does have a justification for her sending her Glokers and Ultraman Justice, she ultimately failed to realize their potential for goodness, to make themselves better, and the fact that many of them really just want to live their lives in peace.
An immense and all-powerful superweapon robot created by Delaxion to annihilate all life on Earth.
- Mook Maker: The Gloker Mothers come from its hold.
- Names to Run Away from Really Fast: It's a gigantic superweapon designed to end life on Earth.
- Shock and Awe: Can fire powerful lightning bolts as a defense mechanism.
- Spell My Name with an "S": Also known as Giga Ender.
- Wave Motion Gun: Given that its purpose is to raze planets of life, it's equipped with one so powerful that it almost killed Cosmos.
- Weapon of Mass Destruction: It's a gigantic and nigh-invincible robotic superweapon able to fire a beam from its core that can annihilate every living creature on a planet in a single shot.
The robotic legions of Delaxion spawned from the Gloker Mother to prevent Earth's inhabitants from opposing Delaxion and Giga Endra. Multiple Gloker Pawns are able to merge into a single Gloker Rook.
- Arm Cannon: The Gloker Pawns have laser cannons built into their wrists.
- Cyber Cyclops: They have a single red eye in both Pawn and Rook forms.
- Fusion Dance: Multiple Gloker Pawns reassemble their structures to merge together as a Gloker Rook.
- Blade Below the Shoulder: The Glokwer Pawns' laser wrist cannons are replaced with wrist blades.
- Elite Mook: Only one Gloker Rook appears, when a squad of Gloker Pawns get overwhelmed by the attack of Lidorias, Golmede, Bolgils, and Don Ron and determine the best course of action is to become something that would defeat all four monsters.
- Humongous Mecha: Giant robots created by a cosmic entity as footsoldiers to enforce its order upon Earth.
- Mecha-Mooks: As the title of "Pawn" indicates, they serve as Delaxion's footsoldiers produced from the Gloker Mothers en masse.
A spaceship that spawns Gloker Pawns, but is able to transform into the formidable Gloker Bishop robot if needed.
- The Juggernaut: These things are damn nigh-invulnerable in both spaceship and robot form!
- Mook Maker: Gloker Mothers produce the Gloker Pawns to attack Earth.
- Transforming Mecha: A Gloker Mother can transform into a Gloker Bishop.
- Cyber Cyclops: Like the Gloker Pawns, they have a single red eye.
- Elite Mook: Even moreso than the Gloker Rooks, as Delaxion only calls them forth when Ultraman Justice decides to join Cosmos in protecting Earth from Giga Endra.
- Hand Blast: The Gloker Bishop fires powerful orbs of explosive energy from its hands.
- Madness Mantra: The Gloker Bishop constantly says "Remove All Obstacles!"