- Action Bomb: The Mebium Dynamite, which he learned from his mentor Ultraman Taro.
- Barrier Warrior: Can create a small force field with his hands.
- Blade Below the Shoulder: The Mebium Blade is a mix of Type 1 and Type 2. It's also his main ability in Brave Mode.
- Dead Person Impersonation: It's revealed in Episode 22 that his human form, Mirai, is actually that of Hiroto Ban, the son of a spaceship captain who had sacrificed his life to rescue the ship in a crisis. Mebius had chosen that form because when he arrived at Earth, he was unable to save Hiroto but also admired his selflessness.
- Fusion Dance
- Mebius becomes Mebius Phoenix Brave in the series finale by fusing with Ultraman Hikari and the members of GUYS.
- The Hero: Duh!
- Naïve Newcomer: Mebius is very inexperienced in comparison to previous Ultra warriors, so the series focuses a lot on his development as a hero.
- Panthera Awesome: He is designed by Hiroshi Maruyama after Tsushima leopard cat, a feline species in Japan.
- Playing with Fire: His Burning Brave mode gives him the Mebium Burst that allows him to create a ball of fire to finish off monsters barbecue-style.
- The Power of Friendship: His Burning Brave mode is formed by such. Taken a step further with Phoenix Mode in the Grand Finale.
- Red Oni, Blue Oni: Literally speaking, he's the red to Hikari's blue.
- Rookie Red Ranger: As stated above, Mebius is pretty new to the whole "Ultra Hero" thing, but that doesn't stop him from trying his best.
- Spell My Name with an "S": Sometimes called Ultraman Moebius.
- Spin Attack: The Mebium Drill Kick, which he learns in Episode 34 in order to defeat Alien Reflect.
Hunter Knight Tsurugi / Ultraman Hikari
- Voiced by: Keiichi Nanba
- Anti-Hero: As Hunter Knight Tsurugi.
- Badass Bookworm: He used to be a scientist and still has a knack for it (such as creating the Knight Timbre for Ultraman Victory's use in Ultra Fight Victory and Ultra Capsules of Ultraman Geed), but that doesn't mean he's not a capable fighter (albeit not before he became Tsurugi).
- Bilingual Bonus: Hikari means "light", which Ryu had suggested. However, the team finds it to be an unimpressive name.
- Canon Immigrant: He's the very first blue Ultra to be part of the main Showa canon of the franchise. Until Hikari's introduction, Blue Ultras only existed in other different universes. In the film Mega Monster Battle: Ultra Galaxy Legends, we see more members of his tribe as background extras.
- Blade Below the Shoulder: Largely relies on his Knight Beam Blade, which is similar to Mebius' own blade.
- Dead Person Impersonation: His human form, Captain Serizawa, was killed when Dinozaur attacked Earth. However, to Ryu, Hikari will always just be Captain Serizawa.
- Expy: He's essentially a M78 counterpart of Ultraman Agul, being a blue-colored Ultra who is initially introduced as a cold, serious Anti-Hero who is at first disillusioned with humanity and couldn't care less about collateral damage when it comes to fulfilling his mission, which causes him to butt heads with a red-colored, more passionate hero, but eventually matures as a character thanks to the teachings said hero offers him.
- Friendly Rivalry: With Mebius. He likes to show up at the last minute of monster battles and steal the victory from him.
- Master Swordsman: Whereas most Ultramen rely mostly on martial arts and beam attacks, Ultraman Hikari primarily relies on his Knight Beam Blade to finish off monsters and duel with foes.
- My Greatest Failure: His inability to protect Aarb from Bogal, which was what originally transformed him into Hunter Knight Tsurugi.
- Put On The Bus: He leaves Earth in Episode 17 and only reappears in Episode 35 and the finale.
- Red Oni, Blue Oni: The blue (literally) to Mebius' red. It's also worth noting that he's the first blue Ultraman to appear in the original Showa continuity.
- Roaring Rampage of Revenge: Was so consumed by his desire to avenge Aarb as Tsurugi that he never stopped to think about how his actions affected others. Best shown in Episode 7 "Fanton's Lost Item", where he blows up some buildings when he attempts to kill Bogal with his Knight Shoot and shows no regret for it.
- Unwitting Instigator of Doom: Believe it or not, Hikari's act of becoming Hunter Knight Tsurugi leads to a young Ultra who admired him now seeing his former idol as a Broken Pedestal, eventually leading to events where he forgoes his Ultraman identity and becomes one of the most despicable villains in the Ultraman history. His name: Ultraman Tregear.
GUYS (Guards for UtilitY Situations)
The Main Team
As a whole
- Badass Crew: Unlike the other defense teams of the Showa timeline, GUYS has proven themselves to be equals to Ultraman Mebius. Many battles in the series see them play a pivotal role in helping defeat the Monster of the Week more than almost any other entry in the Ultra Series.
- Fire-Forged Friends: They all encountered each other by fate during Dinozaur's attack on Tokyo and were asked to join GUYS by Mirai. Dozens of battles later, they've become one of the closest-knit teams the franchise has seen.
- Odd Friendship: A tomboyish motorcyclist, a grandstanding soccer player, a hot-blooded defense team veteran, a timid preschool teacher, a medical student/kaiju nerd, and Ultraman Mebius disguised as a human. They may not be the most normal of defense teams, but they're True Companions through and through.
- True Companions: Perhaps, the truest companions of all the defense teams.
- Played by: Shunji Igarashi
- Aliens Among Us: Since he's Ultraman Mebius in human form.
- All-Loving Hero: He's very close with all his teammates (they're all his best friend), treats everybody respectfully, and sees the best in people. Naturally, the bad guys attempt to break his faith in humanity in their schemes.Aya Jinguji: (bringing Mirai on a "date") Mirai, is there anybody you like?
Mirai: (unaware of the "date") Of course! There's Ryu, there's Captain Sakomizu — I like everyone at GUYS!
- The Heart: He was the one who brought GUYS together, after all.
- Idiot Hero: Downplayed, he's better described as extremely naive as he doesn't quite understand how things work on Earth.
- Meaningful Name: Hibi no Mirai means "Days of Future" in Japanese which he chose when Hiroto Ban's father told him to live out "his days of future" in place of his late son.
- Nice Guy: Mirai is as kind and sincere as they get with Ultraman protagonists.
- Red Oni, Blue Oni: The blue to the hot-blooded Ryu's red.
- Sensitive Guy and Manly Man: The sensitive guy to Ryu's manly man.
- Trademark Favorite Food: Really loves curry.
- Transformation Trinket: The Mebium Brace, which is actually part of his wrist. It can also shoot small bolts of energy when needed.
- Tender Tears: Mirai sobbed once he found Bans watch on the space station where he died. Later when GUYS turned on him under Mefilas influence, he bursts into tears and walks away when they point their guns at him. Its really telling how innocent and softhearted he is despite being an Ultraman.
- Played by: Masaki Nishina
- A Day in the Limelight: "Formation of Our Vows", "The Resurrection of Yapool", and the two-parter "Day of Farewell" and "Flames of Promise".
- Bash Brothers: His friendship with Mirai can be best described as such.
- Hot-Blooded: And how! Marina often refers to him as "a hot-blooded idiot".
- Jerk with a Heart of Gold: It's easy to call him out for his rashness and short temper, but he's also extremely devoted to GUYS and deeply passionate about just causes.
- The Lancer: To Mirai.
- Leeroy Jenkins: Occasionally, his Hot-Blooded attitude leads him into this role, like when he attacked Beo while the Alien Mates was in the middle of discussing potential for peace talks with Mirai and enraging the alien.
- Red Oni, Blue Oni: The red to the warmhearted Mirai's blue.
- Sensitive Guy and Manly Man: The manly man to Mirai's sensitive guy.
- Played by: Daisuke Watanabe
- A Day in the Limelight: "Reverse Shot", "The Lonely Grandstander", and "Deathrem's Plan".
- Berserk Button: He doesn't like it when people call him "Mr. Ikaruga".
- Casanova Wannabe: A Running Gag is him attempting to impress various women by pulling out a rose from nowhere. He even once tried to hit on Teppei's mom!
- Gratuitous Spanish: He tends to pepper his speech with random Spanish words. Justified as he was formerly a part of Spain's national soccer team.
- Jerk with a Heart of Gold: Even though he's something of an arrogant loner, he's genuinely a good guy devoted to his team and his job.
- Loner-Turned-Friend: A big part of his development is about this, as even when he was a soccer player, he was unpopular with his teammates for his "lone wolf" attitude in a team game.
- Super Senses: He has above-average sight, allowing him to see fast-moving objects better than the rest of GUYS.
- Why Did It Have to Be Snakes?: Despite being a perfectly good swimmer, he's afraid of the ocean. He insists that it's because the ocean has it's own rules, thus not meant for people like him to go to (he said the same about going to space as well), but in Episode 25, it turns out that when he was younger, every time he went to the ocean, something terrible happened to him, so he decided the sea just had it out for him.
- Played by: Ai Saikawa
- A Day in the Limelight: "Marina of the Wind", "The Ocean Waves of Time", and "Ace's Wish".
- Action Girl: Of GUYS, in comparison to the more timid Konomi.
- Cool Big Sis: Plays this role to GUYS, particularly George and Konomi. She's also revealed to have been one to her actual brothers.
- Super Senses: Has highly enhanced hearing, allowing her to pick up on sounds that the rest of GUYS can't hear. However, as a motorcyclist it also distracts her as she gets unnerved if the engine makes even the slightest suspicious noise.
- Tomboy and Girly Girl: The Tomboy to Konomi's Girly Girl.
- Vitriolic Best Buds: Her relationship with Ryu, as she frequently snarks and rolls her eyes at his Hot-Blooded attitude.
- Why Did It Have to Be Snakes?: A minor Running Gag is her arachnophobia. George even uses a toy spider to chase her off when she starts pestering him and gives one for Ryu to use in Episode 25.
- Played by: Kenta Uchino
- A Day in the Limelight: "One Path", "Lady of the Blue Flame", and "Mefilas' Game".
- Mission Control: Though he occasionally gets to come out with the rest of the team.
- Non-Action Guy: Unlike the other male members of GUYS. Teppei is usually stationed at Phoenix Nest, where he communicates strategies and information to his comrades on the field.
- The Smart Guy: Both the team's tactician and the one with most knowledge of kaiju.
- The Strategist: He comes up with all sorts of odd but clever tactics to counter kaiju.
- Played by: Misato Hirata
- A Day in the Limelight: Is the first member of GUYS to get one in the fourth episode, "Broken Bonds". She gets one in "Konomi's Treasure" and "Immortal Grozam".
- Animal Motifs: Rabbits. Other characters have likened them with her timid personality and non-combative role. Helps that the preschool she worked at keeps a bunch of them as pets.
- Badass Adorable: She has her moments, such as blowing off Kelbeam's horn in Episode 4 or piloting the Gun Phoenix against Grozam in Episode 46.
- Fluffy Tamer: She has the job of managing the Maquette Monsters (mostly Miclas and Lim. Eleking; Windam is much less dependent on her). Miclas is especially dependent on her as it views her as a motherly figure, making her the only one who can command it effectively and give it the courage to fight.
- Meganekko: She has tried not wearing her glasses, but always ends up going back to them in the end.
- Mission Control: Alongside Teppei, unless GUYS needs to use Miclas.
- Nice Girl: Easily the second kindest member of GUYS after Mirai.
- Tomboy and Girly Girl: The Girly Girl to Marina's Tomboy.
Captain Shingo Sakomizu
- Played by: Minoru Tanaka
- A Day in the Limelight: "A Visit from an Old Friend".
- A Father to His Men: Especially to Mirai, but he cares about the whole team in general.
- The Captain: Of GUYS.
- Catchphrase: He's always the one who gives the order "GUYS, Sally Go!", usually followed by the team answering with a "G.I.G!"
- The Comically Serious: He has his moments.
- Cool Old Guy: He's a friendly and laidback guy who acts as a sort of mentor for GUYS, and see Older Than They Look.
- Embarrassing Nickname: His friends tend to give him these — Dr. Asami Fujisawa likes to call him "Sako-chan" and Supreme Chairman Takenaka called him "Sakkochi" in front of the team, to his embarrassment!
- Mentor Archetype: He's the only one besides Ryu who wasn't part of GUYS prior to the series, so he helps the new members out a fair bit with understanding what it means to be a part of the team
- Older Than They Look: It is revealed in "A Visit from an Old Friend" that he's actually over 70 despite looking to be in his 40s, due to the fact that he was originally a space patrol officer and the effects of light speed travel have slowed his aging.
- Reasonable Authority Figure: His laidback and easygoing attitude make him quite approachable for the rest of GUYS. He's also pretty competent when on the field.
- Secret Keeper: Until Episode 29, he's the only person who knows that Mirai is Ultraman Mebius.
- Tomato Surprise: He's the Chief Inspector of GUYS.
- Trademark Favourite Food: Loves coffee.
Other GUYS members
- Played by: Kenichi Ishii
- A Day in the Limelight: "The First Errand" and "The Chief Inspector's Message".
- The Alleged Boss: Despite heading GUYS Japan, no one really takes him seriously, except for perhaps Mirai. But then again, it's not like he deserves to be.
- Buttmonkey: Due to his foolish schemes and general bumbling. He's been teleported to Antarctica, arrested by a police officer, had his pants pulled down in public, is constantly embarrassed by his attempts to appear superior to the rest of GUYS, and frequently gets scolded by his subordinates for his laziness and stupidity.
- Jerk with a Heart of Gold: As Maru explains in "The Chief Inspector's Message", Toriyama may be a stingy and cowardly oaf, but he cares a lot about GUYS and generally means well.
- Additionally, When Hirukawa's tabloid exposé in "Advent of the Emperor" leads to National Security coming to detain Mirai, he forgoes his usual brown-nosing and refuses to let them throw him under the bus.
- Pointy-Haired Boss: It's a good thing GUYS also has Captain Sakomizu and Yuki Misaki though.
- Played by: Yutaka Maido
- A Day in the Limelight: Shares one with his boss in "The Chief Inspector's Message."
- Beleaguered Assistant: Due to the fact that Toriyama constantly drags him into his dumb schemes, which he is powerless to stop.
- Buttmonkey: Not as much as Toriyama, though he still has his moments.
- Hypercompetent Sidekick: He frequently has to correct Toriyama's statements and deflate his ego when necessary.
Deputy Chief Yuki Misaki
- Played by: Saaya Ishikawa
- A Day in the Limelight: "Soaring to Tomorrow".
- Reasonable Authority Figure: In contrast to Toriyama. She basically acts as the Chief Inspector for GUYS since the real one is nowhere to be found.
- Silk Hiding Steel: She's a pleasant and approachable figure, but certainly deserves the respect that GUYS gives her.
- Sugar-and-Ice Personality: She usually keeps a professional and collected attitude, even more so than Sakomizu, but as her friend Dr. Asami Fujisawa explained, she also has a smile that can bring courage in even the gloomiest moments.
- Played by: Shin Ishikawa
- The Captain: Before Sakomizu was put in the position, he led GUYS and trained them in hopes of creating a defense team that could protect Earth without Ultraman.
- Mentor Archetype: Towards Ryu, in the same manner that Sakomizu is towards the rest of GUYS. Ryu also inherited a lot of his ideals as a result.
- Posthumous Character: Although he dies at the beginning of the series, his character is highly important to both Ryu and Ultraman Hikari throughout the series.
Chief Mechanic Araiso
- Played by: Katsuhiko Watabiki
- Berserk Button: Never insult any of the fighter jets he's worked on. He will fight you. Seriously, he will. When Ryu derided how the planes of previous series were useless due to how they always crashed unlike the Gun Phoenix, it took all of GUYS to stop the two from brawling each other.
- Cool Old Guy: He's a pretty cranky dude, but you gotta give the guy who created every single fighter plane in the Showa Ultra series some credit — he's pretty dang genius.
- The Engineer: Comes with being the creator of the fighter jets used by GUYS and all the defense teams before them.
Dr. Asami Fujisawa
- Played by: Kei Ishibashi
- Bunny-Ears Lawyer: She's described as one of the most renowned experts in the world and having earned her doctorate before she was 20, but you wouldn't know that from her quirky, oddball behavior.
- Hot Scientist: Case in point — George instantly falls in love with her the moment they meet (to Marina's annoyance).
Supreme Chairman Takenaka
- Played by: Kenji Sahara
As a whole:
- Hour of Power: The monsters only last for one minute before vanishing. Justified as all METEOR technology is programmed to be active for only only minute in order to reduce the risks of using salvaged extraterrestrial technology.
- Mons: Carried over from Ultraseven, but they're digital duplicates of the original monsters instead.
- Undying Loyalty: They readily obey GUYS and help Ultraman Mebius battle enemies.
Miclas / Eleki-Miclas
- First Appearance: Broken Bonds
- Cowardly Lion: Miclas is extremely lacking in confidence and needs encouragement to be able to face enemies. This would later become a major trait of future incarnations of Miclas, including the original Ultraseven one. Teppei justifies this, explaining that the original Miclas was much braver as Ultraseven was a strong and benevolent leader to it.
- Invisibility: Thanks to Neronga and Eledortoise.
- Shock and Awe: When upgraded to Eleki-Miclas, he gains the ability to channel lightning through his body and shoot it from his horns. Additionally, he's immune to electric attacks.
- Spring Jump: Capable of this, but his landing skill is much less impressive.
- First Appearance: Terrible Predator
- Cuteness Proximity: Konomi's heart melts at the sight of it when it first appears, although the rest of GUYS is freaked out by it. The scene is both hilarious and adorable.
- Energy Absorption: Has a habit of eating the electricity around Phoenix Nest.
- Fun Size: Comes in this size due to being created from a very tiny amount of Eleking data from the Maquette Monster creator.
- Ridiculously Cute Critter: A playful, chibi version of one of the franchise's most popular Kaiju.
- Shock and Awe: Like the normal Eleking, it can deliver powerful shocks when disturbed, as George learned the hard way.
- Spell My Name with an "S": Sometimes called Rimu Eleking.
- Super-Deformed: It's a chibi after all.
- Team Pet: For GUYS.
Windam / Fire Windam
- First Appearance: Mother's Miracle
- Playing with Fire: Fire Windam possesses the ability to shoot fireballs from the flamethrower on its left hand.
- Right Hand of Doom: As Fire Windam, he possesses a flamethrower in place on his left hand. His head fin is also changed to a red colour.
- Spring Jump: Can jump clean over the heads of other kaiju, a trait not seen in Ultraseven.
- Took a Level in Badass: In Ultraseven, Windam was basically a 40 meter tall punching bag for the bad guys who could be fooled by simply running around it in circles! In Mebius, Windam is now capable of taking on other kaiju without breaking too much of a sweat, even without its Fire upgrade.
Bogal / Bogalmons
- First Appearance: Two From the Deep SeaVoiced by: Moeko Koyama (also human form actor)
- Achilles' Heel: Electricity. Unfortunately for GUYS, she loses this when she becomes Bogalmons.
- Action Bomb: When Tsurugi arrives on Earth, Bogal starts consuming monsters to build enormous amounts of energy into her body and become one as Bogalmons.
- Animal Motifs: Snakes. Her back mouth is meant to resemble a cobra's hood while her methods of consumption are similar to those of any snake.
- Archenemy: To Hunter Knight Tsurugi, who protected Aarb one of the planets whose inhabitants she devoured.
- Arc Villain: Of the first 10 episodes.
- Big Eater: For Bogal, the kaiju are just appetizers. The main dish is the rest of Earth.
- The Dreaded: Other kaiju are terrified of her, even when they see her human form
- Early-Bird Cameo: Until Episode 6, she appears throughout the series in a human disguise.
- Expy: Her design is actually based off some scrapped concept art for Orga from Godzilla 2000.
- Food Chain of Evil: An intelligent kaiju that lives to consume other kaiju. There's a reason why Kelbeam fled in terror upon spotting her human form.
- Hand Blast: Can shoot purple orbs of energy from her hands.
- The Heavy: Although only appearing in the first 10 episodes, her presence is what kickstarts the plot.
- Mind over Matter: Has shown telekinesis in both monster and human form.
- More Teeth than the Osmond Family: Her mouth, which is disguised as her back!
- Not Quite Dead: In Episode 8, Tsurugi and Mebius seemingly kill her, but then it turns out she simply fled with an illusion in her place.
- Omnicidal Maniac: For Bogal, the universe is nothing more than her personal buffet.
- One-Winged Angel: Bogalmons.
- Overly Long Tongue: In her human form. She tends to lick her lips with it hungrily whenever the Monster of the Week appears.
- Prehensile Tail: She uses it to to grab objects, including trying to snatch the C-PIN 929 (although Mebius was able to slice it off as a result) and even subduing Twin Tail to tak on Gudon when she interrupted their battle to eat them.
- Shock and Awe: As Bogalmons, she can shoot beams of lightning from her back.
- Snakes Are Sinister: Snakes are a large part of her design.
- Spell My Name with an "S": Bogal or Bogar?
- The Stoic: In human form.
- Swallowed Whole: Her favoured form of finishing off other monsters.
- Taking You with Me: What she intended to do with Tsurugi and Japan as Bogalmons. See Action Bomb above.
- Villain Teleportation: In human form.
- Villainous Glutton: A rare female example.
- Voluntary Shapeshifting: Can turn into a human woman to go around unseen. Monsters will still recognize her presence though.
- First Appearance: The Swordsman from SpaceVoiced by: Isamu Sugaya
- Anti-Hero: Fills in the role left vacant by Tsurugi's redemption into Ultraman Hikari.
- Arch-Enemy: Considers Tsurugi to be his.
- Badass Normal: Despite having no powers, he was able to fight against the Ultramen and survive as well as take on some of the most powerful characters evenly.
- Back for the Finale: Where he battles Empera alongside Hikari.
- Bilingual Bonus: His name literally means "The Warrior" in Japanese.
- Blood Knight: He fights for the sheer sake of it.
- Curb-Stomp Battle: Against almost anyone who battles him as Alien Valky and the two Alien Magmas found out.
- Eyepatch of Power: His right eye.
- Glory Seeker: He fights in order to prove himself as the most powerful warrior in the universe. However, he later realizes the true meaning of fighting is about protecting others.
- Heroic Sacrifice: In the final battle against Empera, he saves GUYS from a potentially fatal attack.
- Katanas Are Just Better: His Hoshikirimaru is capable of slicing the Mebium Blade in two, chopping up giant robots, and even slicing a comet into hundreds of shards of rock and ice.
- Master Swordsman: He fancies himself the greatest swordsman in all of space, and has certainly lived up to it, having fought toe on toe with the likes of Hunter Knight Tsurugi and (according to Expanded Universe material) Emperor Galtan, Alien Tsuruk, and Alien Terrorist.
- Named Weapons: His sword is called Hoshikirimaru, meaning "Star Slash Circle".
- Noodle Incident: Exactly what went down in the battle between Zamusha and Tsurugi is never explained.
- The Only One Allowed to Defeat You: His reason for coming to Earth is this to Tsurugi.
- Red Eyes, Take Warning: Technically "red eye", but still.
- Samurai: A space samurai!
- The Worf Effect: Defeats three aliens all in short order without breaking a sweat and kills several Imperisers too. Becomes a victim of this when he battles Empera.
- Spell My Name with an "S": Zamusha, Zamsher, Zamsha, Zamshar, etc.
- First Appearance: A Call from Space
- Eye Beams: They shoot purple orbs of energy from their eyes.
- Food Chain of Evil: Like their mother, they consume other monsters. However, since their too small to attack kaiju, they usually just scavenge from the corpses floating around the Monster Graveyard.
- Hand Blast: They can spam dark blue bolts of energy from their claws.
- Make My Monster Grow: They turn kaiju-sized through Monstrous Cannibalism, changing appearance if they eat at least two of their fallen kin.
- Monstrous Cannibalism: They consume their own dead to grow in power and size much like how Bogal became Bogalmons.
- More Teeth than the Osmond Family: The final Lesser Bogal.
- One-Winged Angel: The last Lesser Bogal consumes its fallen comrades to gain a horrid visage reminiscent of a Venus Flytrap.
- Overly Long Tongue: The last one of them uses this to snag Ryu's plane and try pull him into a portal to the Monster Graveyard.
- Villainous Glutton: As ravenous as Bogal, but far more feral.
- First Appearance: Ultraman Mebius and the Ultra Brothers, The Resurrection of Yapool (in series)Voiced by: Tessho Genda
See Ultraman Ace
- Demoted to Dragon: This time, he's just one of the 4 Heavenly Kings (except in The Movie, where he controls U-Killersaurus against Mebius and the Ultra Brothers).
- Dragon Ascendant: He was apparently Empera's Dragon during the original war with the Ultras, but went on to become a Big Bad himself in until Empera returned.
- The Dragon: Of the 4 Heavenly Kings towards Empera, being the emperor's most loyal servant and the most passionate enemy of the Ultramen out of the 4 Heavenly Kings.
- The Man Behind the Man: He subtly swayed the minds of Aliens Zarab, Guts, Nackle, and Temperor to free him and U-Killersaurus from their underwater prison off Kobe.
- Sealed Evil in a Can: In The Movie, due to the Ultra Brothers sealing him under the sea while he was in the body of U-Killersaurus.
- Played by: Kato Kosei
- Chekhov's Gunman: Originally appeared in Episode 28 "Konomi's Treasure" working with a childhood friend of Konomi to make a scandal around GUYS. Nobody ever expected his reappearance alongside that of Yapool and Aya Jinguji, or that he would reveal Mirai's secret identity to the rest of the world.
- Hate Sink: In a show filled with giant kaiju and alien invaders, this miserable excuse of a human being somehow sticks out as being the most unscrupulous and despicable character. Sadly he didn't really get any sort of comeuppance by the series' end.
- Humans Are the Real Monsters: Perhaps he's the only human in the series to be an unrepentant scumbag whereas the rest of the villains are invaders from outer space. So much so that Yapool is even amused by Hirukawa's repulsive behavior towards Mirai and takes advantage of the trope through Break Them by Talking into crushing the young Ultra's faith in humanity. Revealing Mirai's identity as Mebius to the public was simply nothing more but a middle finger to both Mirai and crew GUYS.
- Immoral Journalist: Very much so. He will do anything to get a good story for the tabloids, regardless of what kind of horrible things it requires (or even if the story is even remotely true).
- Jerkass: You might notice he's the only human character in the antagonists folder. That would be because he is quite easily the most despicable human character in the show, having zero redeeming qualities or any sense of morality.
- Karma Houdini: Despite all the horrible things he does, including ousting Mirai as Mebius, he ultimately gets no serious comeuppance.
- Paparazzi: Though he's not a photographer, he certainly fits the mode, as he specializes in creating slanderous stories using superficial evidence.
- First Appearance: Day of Farewell
The Imperisers have also appeared a few more times in other Ultra Series.
- Back from the Dead: The first one returns from the Monster Graveyard in Ghost Rebirth.
- Blade Below the Shoulder: If Imperiser's arms get blown off, it simply regenerates them into a sword.
- Boss in Mook's Clothing: Despite being Empera's footsoldiers, a single one was virtually unkillable by even the experienced Ultraman Taro.
- Conservation of Ninjutsu: A single Imperiser? Decimates GUYS and two Ultramen. A whole army of Mass-Produced Imperisers? Each one dies in one hit.
- From a Single Cell: Despite being a robot, it can do this due to its highly advanced self-repair system. The only way to destroy one permanently is to destroy that.
- Half the Man He Used to Be: Ultraman Taro managed to defeat one by blowing up its upper half from above the waist using the Storium Dynamite, but unfortunately its not enough to stop it from regenerating.
- Humongous Mecha: Used by Empera as his army's scouts and cannon fodder.
- Hydra Problem: The Mass-Produced Imperisers used this by teleporting in every time Mebius killed one.
- The Juggernaut: Not even Taro's Ultra Dynamite could kill even one these guys, as when Taro blew the top half off, its legs still survived and teleported away!
- Knight of Cerebus: As the monster of the Wham Episode as well as the most powerful Mebius has faced yet, definitely.
- Mecha-Mooks: Of Empera's armies.
- More Dakka: Their combat tactics are to simply spam lasers and energy orbs from the cannons mounted on their "head" and shoulders.
- Spell My Name with an "S": Imperiser, Imperializer, Imperizer, Inpelaizer... Nobody's too sure.
- Spin Attack: Has a 360-degree waist that allows it to simply spin around while shooting for maximum destruction.
- Teleport Spam: Displayed by the Mass-Produced Imperisers, but even the original could teleport to evade GUYS.
- This Is a Drill: The Mass-Produced Imperisers created these instead of the standard Blade Below the Shoulder.
- The Worf Effect: On Ultraman Taro.
Alien Deathre Deathrem
- First Appearance: Threat of Mebius KillerVoiced by: Daisuke Gōri
Other members of Deathrem's species have appeared in the Ultra Series since.
- A Lizard Named "Liz": Justified as he was the only member of his species known until much later.
- Back from the Dead: In Ghost Rebirth.
- Body Horror: His design is meant to look like he's been turned inside-out.
- Cyclops: Has a single yellow eye.
- The Dark Chick: Of the 4 Heavenly Kings, being the most manipulative of the bunch and able to turn humanity against Ultraman Mebius and GUYS.
- Dem Bones: He looks like hes decorated with bones.
- Evil Sounds Deep: Has the deepest voice of the 4 Heavenly Kings, due to being voiced by Daisuke Gōri.
- Manipulative Bastard: His eponymous plan was to imprison GUYS in a containment field and decree that he must destroy Ultraman Mebius if GUYS is to be freed, leaving Mirai in a crisis about whether it was more important to save his friends or the civilian populace, who were angry at the indecisiveness of GUYS.
- Names to Run Away from Really Fast: Deathrem.
- Playing with Fire: The Deathrem Inferno, which is his ability to open portals that shoot out homing fireballs at targets.
- Right Hand of Doom: His left hand is equipped with massive claws.
- Spell My Name with an "S": Also known as Desrem.
Alien Groza Grozam
- First Appearance: Threat of Mebius KillerVoiced by: Hisao Egawa
Other members of Grozam's species have appeared in the other entries of the Ultra Series.
- A Lizard Named "Liz": Justified as his species wasn't established until much later.
- An Ice Person: Not only is he able to breath blasts of freezing air, but he's also completely made out of ice.
- Back from the Dead: In Ghost Rebirth.
- Blade Below the Shoulder: His weapons of choice.
- Breath Weapon: Breathes an icy mist so powerful that it could freeze fire.
- The Brute: Of the 4 Heavenly Kings, as his evil plan is simply to pummel Mebius and let humanity despair at the defeat of their hero, without considering that GUYS would try to do something about it.
- Cyclops: A single blue eye.
- From a Single Cell: Being blown to bits doesn't stop him from regenerating either.
- Half the Man He Used to Be: Was sliced diagonally into two with Ultraseven's Eye Slugger. It doesn't work because...
- Healing Factor: He even regenerated from being sliced in two by Ultraseven!
- Horned Humanoid: Two downward-curving horns on his head.
- Impaled with Extreme Prejudice: Not him, but Glozam does this to Ultraman Mebius, pinning the Ultra into a dam.
- In the Hood: In his human form, he appears as a hooded figure before revealing his face.
- Logical Weakness: As an alien made of ice he is naturally vulnerable to fire and heat. The problem is that he's so big that the heroes cannot produce enough heat to keep him down. GUYS gets around this by letting Ultraman Mebius and Ultraseven blow him to pieces, then hitting him with superheated air while he attempts to pull himself together.
- Losing Your Head: His entire body gets blown into bits by Ultraseven and Mebius, save for his head... who then speak up and tuant the Ultras."Didn't I already tell you? I'm the Immortal Glozam!"
- Mythology Gag: His imprisonment of Mebius is an intentional parallel to Ultraseven's crucifixion at the hands of Alien Guts.
- Rasputinian Death: Blown into bits, and then each and every bit of himself gets incinerated by the GUYS Phoenix's Maxwell Tornado. And he's still very much alive and conscious during the incineration.
- Spell My Name with an "S": Also called Glozam due to "L-R" confusion in the Japanese language.
- Weaksauce Weakness: Defeated by using superheated air to completely melt him into nothingness.
- First Appearance: Threat of Mebius KillerVoiced by: Seizo Kato
See Ultraman TV Series
- Back from the Dead: In Ghost Rebirth, albeit now wearing a suit of armour.
- The Evil Genius: Of the 4 Heavenly Kings towards Empera, for he's the most intelligent of the group and uses advanced technology to brainwash the world into seeing Mebius as an evil alien and him as the protector of Earth.
- Genre Savvy: When Grozam gloats about GUYS is helpless to rescue Mebius and defeat him, Mefilas is quick to point out that he should not be underestimating the humans as they have saved the Ultras and defeated monsters by themselves many times before. He was correct.
- Mefilas also wasn't kidding when he said he would kill Mirai in a manner that would leave him in utter despair. In a series themed around friendship, there's truly no worse way for a villain to kill the hero than by turning friends against them. Of course, Mefilas is eventually foiled by his underestimation of the strength of GUYS' bonds.
- Heroism Addict: In order to prove himself as a hero, Mefilas unleashed the kaiju Gromite into the city and defeat it in public.
- Identical Stranger: Despite his similar suit design and sharing voice actor, he is not the first Alien Mefilas that Hayata/Ultraman fought in 1967, who exited and sworn to fight Ultraman in the future. In a Bandai-authorized official blog, he is given the designation Alien Mefilas III.
- Mind over Matter: In this series, Mefilas has telekinetic abilities, which he uses to redirect beam attacks or guide his own energy attacks.
- Mythology Gag: His We Will Meet Again statement to Mebius and Ultraman, as well as his admittance to defeat, are what the original Mefilas told Ultraman. They even vanish in the same manner.
- Additionally, a brief bit of Mefilas firing one of his Hand Blasts at Ultraman's chest to no avail is a near-perfect shot of when the monster Neronga did something similar to Ultraman as well.
- You Have Failed Me: His fate.
- First Appearance: Mefilas' GameVoiced by: Kenji Utsumi
- Achilles' Heel: He has a few wounds of light near his waist left from his battle with the Father of Ultra. By exploiting these wounds, Ultraman Hikari is able to injure him and Mebius in Phoenix Mode is able to destroy him by completely opening them up in the final battle.
- Arch-Enemy: Of the Father of Ultra, who fought him one on one in the Land of Light thirty thousand years ago in a duel that ended in a draw.
- Badass Cape: It can actually act as a force field.
- Big Bad: One of the Biggest Bads in the Ultra Series, and can be considered the Big Bad of not just Ultraman Mebius, but the classic Showa continuity in general (at least until Ultraman Belial was introduced).
- Casting a Shadow: Has numerous shadow-themed powers
- Dark Is Evil: Has a dark color scheme and yes, he is evil. His goal is to destroy light and spread darkness throughout the galaxy.
- Early-Bird Cameo: Is actually first seen in Ultraman Taro in a flashback, and was supposed to be the villain of Alien Temperor's 2-part debut.
- The Emperor: Obviously.
- Evil Overlord: Leads an army of monsters and seeks to conquer the galaxy and enshroud it in darkness.
- Finishing Move: The Rezolium Ray, his answer to the Ultras' beams and what he uses to kill Ultraman Mebius.
- Galactic Conqueror: His goal isn't just to conquer the galaxy, but to purge all light from it as well.
- Healing Magic Is the Hardest: While immensely powerful, it took him 30,000 years to recover from the war enough to make a second attempt, while the Father of Ultra received an identical wound and didn't take nearly as long. Any attempt to actually revive him is also shown to be far more difficult than is typical in this universe.
- The Juggernaut: He was able to block swords with his bare hands and caused explosions all over Tokyo by simply landing in the middle of the city.
- Last of His Kind: According to some sources, he was the last of a race of aliens who were killed off when their planet's sun went died. How did he survive? By embracing the power of darkness, of course!
- The Man Behind the Man: Implied to have manipulated the events of the series (and to a lesser extent, every monster and alien attack in the previous series, considering the Space-Time Emitter) to ensure his arrival.
- Mind over Matter: Has immense psychic power, with his favorite being telekinesis, which he uses to stop even a single hit from landing on him.
- Playing with Fire: Can conjure deep red fireballs as projectiles.
- Spell My Name with an "S": His name has been translated as both "Alien Empera" and "Alien Emperor", though the former is the spelling most commonly used.
Regular Monsters and Aliens
- First Appearance: A Fateful Encounter
- Bilingual Bonus: Dinozaur's name is the Polish word for "dinosaur".
- Bizarre Alien Biology: It uses its razor tongue to snatch particles floating about in the depths of space. Weirder still, blowing off its head will result in a Dinozaur Reverse!
- Early-Bird Cameo: A small clay model of Dinozaur appears in Episode 22 of Ultraman Max. See here.
- Everything's Better with Dinosaurs: Space dinosaurs!
- Expy: Its design is based on Sandros, Big Bad of Ultraman Cosmos 2: The Blue Planet, as well as early concept art for Orga from Godzilla 2000.
- Multiple-Tailed Beast: Two tails. They carry large nerve clusters within them, so they effectively act like secondary brains.
- Overly Long Tongue: Extremely thin and razor sharp. Capable of slicing a skyscraper in half.
- Shoulder Cannon: Fires hailstorms of laser bolts from its shoulders.
- Starter Villain: For Ultraman Mebius, serving as an excellent demonstration of his inexperience.
- Starter Villain Stays: Much later on the Dinozaur return as an entire herd.
- The Worf Effect: Used with GUYS. A single one totally decimates the original GUYS in Episode 1, but in Episode 11, GUYS destroy an entire herd of the monsters and manages to blow the survivor's head off.
- Your Head Asplode: The surviving Dinozaur in Episode 11 is defeated this way, allowing it to become Dinozaur Reverse.
- First Appearance: Our Wings
See Return of Ultraman
- Curbstomp Battle: On the receiving end twice. First by Bogal in Episode 9, and then by Zetton in Episode 27.
- Mons: In Episode 27, Teppei uses a Maquette version of Gudon as a test monster against the Maquette Zetton.
- Mythology Gag: Seen battling Twin Tail again in its reappearance.
- Also the first one emerges near a construction site at sundown, mirroring what happened in the original Gudon's battles with Ultraman Jack.
- Starter Villain: GUYS' very first enemy after the original team (except Ryu, of course) was all killed by Dinozaur.
- First Appearance: Only One Life
See Ultraman Taro
- Achilles' Heel: As dangerous as it is, if a vein in its poison sacks is damaged, the poison floods its system and leaves it vulnerable.
- Continuity Nod: It reappears where the original in Ultraman Taro did, at Mt. Okutama. A few have theorized that it's supposed to be the original Birdon too, since Taro only managed to seal the monster back inside the volcano at the end of the three-parter.
- The Dreaded: Managing to kill two Ultras in the past tends to make you this. Everyone has an Oh, Crap! when it shows up, because the past event is still remembered. It manages to give Mebius a Curbstomp Battle in their first fight and injures him so badly he's still weakened in their rematch.
- Karma Houdini Warranty: In a meta sense, Birdon in Ultraman Taro was simply sealed away instead of killed due to its sheer power, this one has no such luck and is promptly destroyed by GUYS' and Mebius' efforts.
- Hoist by His Own Petard: Its defeat comes from having the sacks holding the venom damaged in such a way that it's flooded with its own venom.
- Poisonous Person: Whereas the original Birdon simply had a very sharp beak, this incarnation (and all subsequent ones) has a venomous beak.
- First Appearance: Broken Bonds
Kelbeam proved to be a fairly popular kaiju and has since made appearances in other Ultra Series.
- Beware My Stinger Tail: A spiked club perfect for bashing Ultramen or other monsters.
- Breath Weapon: A rapid stream of fireballs.
- Everything's Better with Dinosaurs: Extraterrestrial, club-tailed ones.
- Expressive Ears: Has two ears that flash up whenever he breathes his fireballs. They also catch radio waves to manipulate them.
- Female Monster Surprise: The first Kelbeam was actually a female that laid an egg while hiding in the sea which hatched into the second Kelbeam.
- Half the Man He Used to Be: The first one's fate.
- Horn Attack: In point-blank combat, Kelbeam can use its horn to smack enemies.
- Jerkass: Unlike most Kaiju, Kelbeam seems to rampage simply because he feels like it. Best shown in Episode 20 when he mind controls Earthtron and proceeds to bully the lesser monster into fighting Mebius for him. When he loses control over Earthtron, prompting the former servant to leave peacefully, he steps on Earthtron's tail and makes it run back into the fight.
- Kick the Dog: A lot.
- Brutally beats up the timid Miclas.
- Mind controls and bullies Earthtron. He even gets Earthron killed by forcefully dragging it back into the fight by stepping on is tail, after its freed from Kelbeam's mind control and tries to leave.
- Taken almost literally when he nearly kills Takato's dog in a flashback in Ultraman Mebius & the Ultra Brothers, destroying the boy's self-confidence and his faith in Ultraman.
- Screw This, I'm Out of Here!: Why the first one leaves during the first fight with Mebius. When Kelbeam catches sight of Bogal in her human form, it is scared to death and runs away in terror.
- Spell My Name with an "S": Also spelled as Kelbim or Cherubim.
- Spin Attack: Kelbeam can levitate himself and spin rapidly like a tornado, smashing everything in its vicinity with its tail.
- Villain Team-Up: With Earthtron in Episode 20, though only because it forcefully mind-controlled Earthron with GUYS' newest invention to do so.
- Wolverine Claws: Long nasty claws for slashing his enemies.
- First Appearance: Reverse Shot
See Return of Ultraman
- Butt-Monkey: Nothing ever goes right for them, they solely exist to be killed by either Ultras, humans or stronger monsters. Many of them even appear in cameos to be eaten by Bogar offscreen.
- Dirty Coward: They rely on creating fog to cloak themselves while striking from behind with their pincers. Even during the battle with Mebius, the Sadorahs are content to let one of their kind fight Mebius until he is killed, which is when the rest strike.
- Extendable Arms: A trait of Sadorah new to this series that ended up becoming one of its primary abilities in all subsequent appearances.
- Mythology Gag: The fog-making powers for Sadorah are derived from the excessive amounts of mist in the mountains where the original lived.
- Ominous Fog: From this series onwards, Sadorah has the ability to create these.
- Zerg Rush: A new trait in Sadorah that would become one of its defining traits in Ultra Galaxy Mega Monster Battle.
- First Appearance: Two From the Deep Sea
See Return of Ultraman
- Art Evolution: Twin Tail's glowing spots are changed from green to blue in this series onwards.
- Home Field Advantage: Twin Tail is not an extremely powerful kaiju on land, but when Mebius fights it underwater, he's quickly overwhelmed by the monster's increased agility and speed in its natural environment.
- Mythology Gag: Seen battling Gudon again when they two return in Episode 9.
- Sea Monster: Revealed to be one in this series. Also displays a change in body shape, switching from the iconic "upside-down" position to a flattened form like a horseshoe crab in order to swim.
- First Appearance: Fanton's Lost ItemVoiced by: Yasuhiko Kawazu
Fantonians have made a few more appearances in the Ultra Series since, with the most prominent being Dr. Guruman from Ultraman X, the chief scientist of the series' defense team Xio and one of the show's main characters.
- Aliens Speaking English: Averted with this particular representative, who is one of the few alien characters in the franchise to speak in their native language. Later members of the species are able to speak Japanese, however.
- Amusing Alien: The Fanton sent to speak to GUYS. He speaks a language similar to inebriated speech, drives Toriyama and Maru nuts with his constant demands for food and performs a bizarre dance before digging in.
- Animal Motifs: Snails as seen in their eyestalks and the spiraled shoulders.
- Back for the Finale: Though unlike Kako and Zamusha, he doesn't help to battle Empera.
- Big Eater: The Fanton representative eats an entire month's worth of food in a single sitting, and according to Dr. Gourman, his species eats 13 meals a day!
- Bilingual Dialogue: The Fantonian representative speaks in his mother tongue, which, hilariously enough, is reminiscent of a drunken person slurring their speech. Teppei can communicate somewhat fluently with him.
- Exposed Extraterrestrials: They don't wear any type of clothing whatsoever.
- Expy: He's based on Kanegon, and also bears a slight resemblance to Jar-Jar Binks.
- Obsessed with Food: Their culture takes mealtime very seriously, with the Fanton we see performing elaborate ceremonies and ritual dances upon receiving his meal from GUYS.
- Planet of Hats: All Fantonians are usually good-natured big-eaters.
- Punny Name: Befitting for a species of alien whose culture revolves almost entirely around eating, their name is derived from the Chinese insult "Fan Tong", which is used for people who only think about food.
- First Appearance: Mother's Miracle
- Backpack Cannon: An evolution of the normal Dinozaur's Shoulder Cannons, allowing Dinozaur Reverse to spam laser bullets against those who attack it from behind.
- Everything's Better with Dinosaurs: Two-headed space dinosaurs!
- Metamorphosis Monster: Begins as a normal Dinozaur, but thanks to the large nerve clusters in its tail, it can becomes Dinozaur Reverse to compensate for the loss of its head.
- Multiple Head Case: Two heads grown from Dinozaur's two tails.
- Overly Long Tongue: Extremely thin, razor sharp, and capable of slicing a skyscraper in half — at a two-for-one price!
- First Appearance: The First ErrandVoiced by: Keiichi Nanba
- Achilles' Heel: The statuette had a crack in its legs that allowed Mebius and Hikari to destroy the Grotescell within by firing their beams into it.
- Beware the Silly Ones: A giant giggling statue of a little old fisherman that proved to be a surprisingly formidable opponent.
- Breath Weapon: The fish breathes fire.
- Continuity Nod: To the original Kodaigon from Return of Ultraman, right down to being brought to life by the same substance used by Alien Grotes.
- Flying Seafood Special: The fish is also able to fly.
- Golem: Essentially.
- The Juggernaut: The crack in its legs was the only part of its body that GUYS and the Ultras' attacks could show some affect on.
- Improbable Weapon User: Being a statuette of the Japanese patron of fishermen, it uses a fishing rod in combat.
- Madness Mantra: The fish constantly shouts "Wealth and Good Fortune!"
- First Appearance: Marina of the Wind
See Ultraman Taro
- Not Quite Dead: Mebius blows up Mukadender with a well-placed Mebium Beam, only for the separated head to lunge out of the smoke while his back is turned. Fortunately, Hikari shows up to destroy it at the last minute.
- Super-Persistent Predator: Mukadender nearly spends the entire episode chasing after Marina and her friends, even waiting for them to come back out when they hide inside a cave.
- First Appearance: One Path
- Achilles' Heel: The monsters' weak points are their mouths, which shooting at also helps to disable their ability to command lesser insects.
- Big Creepy-Crawlies: Gigantic beetles with the features of the stag and rhino beetle.
- Female Monster Surprise: For GUYS when they find out why Toriyama had gone nuts. The baby Insectas is an unpleasant surprise after they learn the gender of the Insectas they had first encountered.
- Gigantic Adults, Tiny Babies: The larva was small enough to fit inside a human ear and the adult male it grows into is 45 meters tall. The growth happens within a matter of hours too once the larva had enough of living in a human ear.
- Pest Controller: Both sexes can summon swarms of insects to harass their enemies by calling at a certain frequency.
- Shock and Awe: Both sexes can shoot lightning bolts from their horns.
- Spell My Name with an "S": Insectas or Insectus?
- First Appearance: Phoenix Stronghold
- Achilles' Heel: There's a tiny opening in its neck that reveals the fleshy insides. Harming this area will cause Gromite great pain, but the monster only exposes it when it lowers it head down to feed.
- Breath Weapon: Dark red fireballs.
- Eat Dirt, Cheap: Rock, dirt, rubble, anything like that.
- Healing Factor: Consuming rock gives it this ability, allowing it to strengthen its armour and heal injuries.
- Mythology Gag: His design is based on a scrapped Ultraman Nexus monster, yet he was also made using the suit of the Nexus monster Golgolem (with the modified head of Ultraman Max's Grangon).
- Rock Monster: Weird example. It's more akin to a mass of internal organs that can gather mineral matter to give itself the rocky body it needs to survive.
- Throat Light: When it consumes rock, a light glows in its throat, allowing it to levitate rock into its mouth.
- First Appearance: The Swordsman from SpaceVoiced by: Tetsu Inada (both)
See Ultraman Leo
- Art Evolution: Whereas the first brother closely resembles the original Magma, with red hair and blue eyes, the second possesses white hair and red eyes.
- Avenging the Villain: They intended to complete the original Magma's conquest of Earth.
- Bullying a Dragon: Considering the fate of almost any warrior who tries to duel Zamusha, the two Magmas really should not have made their unprovoked attack on him.
- Half the Man He Used to Be: The fate of the second Magma (which also causes the Oshima Comet to split in two).
- Long-Lost Relative: The Magmas claim to be related to the one from Ultraman Leo.
- First Appearance: The Swordsman from SpaceVoiced by: Makoto Kamiya
See Ultraman Taro
- First Appearance: Formation of Our Vows
See Ultraman 80
- Achilles' Heel: Has a regeneration organ in its throat that it hurt, will prevent the monster from reforming. In its original appearance, this was merely just a very sensitive body part with no other significance.
- Continuity Nod: GUYS applies the same tactics UGM used to destroy the original.
- From a Single Cell: In its original appearance, it had to be resurrected by the Alien Gorgon. Here, Salamandoras is capable of regenerating by itself.
- First Appearance: Pressure on Ultraman
See Return of Ultraman
- The Dreaded: Mirai was pretty worried about having to face this guy, as he had heard about how the original monster was so tough that Ultraseven had to show up and help Jack defeat it — and Hikari has just left Earth.
- Evil Laugh: Makes the kaiju version of one when it attempts to eat Marina in her plane, Mebius' arm, and Hikari's fist.
- Mythology Gag: A lot of elements of Bemstar's appearance in the episode are borrowed from its debut episode in Return of Ultraman, "Ultraseven Arrives". Coincidentally, they're both the 18th episodes of their respective series.
- Playing with Fire: In this series, Bemstar is able to create a pulse of extreme heat from its Belly Mouth in order to vaporize anything that clogs it.
- There Is Another: The Bemstar that Mebius fights is actually one that Hikari and Zoffy had sighted in space after Hikari succeeded in defeating another one.
- First Appearance: The Lonely Grandstander
- Big Creepy-Crawlies: Resembles a giant bipedal rhinoceros beetle.
- Breath Weapon: Energy bombs.
- Came from the Sky: Daigarugu first appears as orb of energy hurtling through space before it crashes on Earth.
- Doppelgänger Attack: Daigarugu creates two perfect copies of itself, splitting into three identical monsters with a third of the power of the full creature. This also means the only way to harm Daigarugu is to somehow hit all three monsters at once with a single attack.
- Horn Attack: Can shoot energy bolts from its horn.
- First Appearance: The Chief Inspector's Message
See Return of Ultraman
- Buttmonkey: Due to being constantly bossed around by Kelbeam (who decides to let Earthtron do all the fighting for him), which makes for some funny communication scenes between the two that intentionally parallel Adjutant Toriyama and Maru.
- Non-Malicious Monster: Earthtron was only attacking because of Kelbeam's mind control. After GUYS manages to end Kelbeam's control over Earthtron, the latter monster attempts to leave, only for Kelbeam to attack him and the enraged Earthtron goes back into the fight, forcing Mebius to kill both of them.
- First Appearance: The Ocean Waves of Time
- Achilles' Heel: Destroying Chronorm's eyestalks nullifies its time-warping powers.
- Arch-Enemy: To Torii for destroying his people.
- Brown Note: Its warping abilities make the sound of ocean waves, which is what warps victims (or anybody else unlucky enough to hear them) through time.
- Combat Tentacles: Can sprout two from its front which it uses to fight Mebius.
- Eldritch Abomination: Giant monster that consumes memories, warping victims to the time and location of the memory to eat their past self yet...
- Animalistic Abomination: ...it resembles a giant sea slug.
- Eye Beams: Chronorm can charge up a red orb of energy from its eyes to be launched at foes.
- Eye Scream: Marina blows out the monster's eyestalks as they're the source of its warping powers.
- Invisibility: Can spray a white mist to turn itself invisible.
- Shock and Awe: Its tentacles can generate powerful electric shocks.
- Time Master: Combined with the ability to consume memories.
- Would Hurt a Child: Chronorm's goal in the episode was to kill the child Marina.
Alien Angel Torii
- First Appearance: The Ocean Waves of TimePlayed by: Ryuichi Ohura
- Animal Motifs: Birds, specifically albino peacocks.
- Bilingual Bonus: Torii's name is Japanese for "Bird".
- Bird People: His species.
- Go Out with a Smile: He dies happily knowing that his sacrifice is what allows Marina and Mebius to kill Chronorm, avenging his people and giving the young Marina the courage of her future self.
- Heroic Sacrifice: Torii performs one to save Marina from Chronorm when she gets distracted by her past self's injuries.
- Last of His Kind: Chronorm ate most of them. The few others that escaped died on the journey to a new home.
- Nice Guy: Torii was gentle, very friendly, and very sincere to others.
- Our Angels Are Different: A race of graceful bird-like aliens all wiped out by a giant space slug.
- Winged Humanoid: Of course.
- First Appearance: The Resurrection of Yapool
See Ultraman Ace
- First Appearance: Program of the Poisonous Moth
See Ultraman Ace
- Back from the Dead: This Doragory is the original one from Ultraman Ace revived by Yapool, complete with its original memories
- Continuity Nod: To the original two-part episode it debuted in "Kaiju vs Choju vs Seijin" and "Life of the Sun, Life of Ace".
- Additionally, Teppei freaks out when Doragory manages to pin down Mebius, stating that "Doragory ripped apart Muruchi in the past". Thankfully for Mebius, no dismemberment occurred thanks to GUYS' intervention.
- Demonic Possession: In its moth form by turning itself into purple as to enter Dr. Fujisawa's body.
- Moth Menace: Doragory can now transform into a giant moth in order to possess people.
- First Appearance: Soaring to Tomorrow
See Ultraman Ace
- First Appearance: Champion of Fierce Fighting
See Ultraman TV Series
- A.I. Is a Crapshoot: The Maquette Monster went rogue as Toriyama had damaged its capsule, meaning GUYS could no longer control such a powerful monster anymore.
- The Dreaded: Mirai is pretty nervous about having to battle Zetton, even if it's just a Maquette version, due to how infamously powerful the monster is.
- Mons: A rogue one in this case.
- Mythology Gag: Maquette Zetton defeats a Maquette version of Mebius in the exact same way the original Zetton killed the original Ultraman. They even parody Ultraman's death scene when Maquette Mebius collapses.
- Shout-Out: The concept of a digital monster that the hero has to battle in the virtual world isn't new for Tsuburaya Productions, as those who have seen Denkou Choujin Gridman will tell you.
- First Appearance: Konomi's Treasure
See Ultraman Leo
- Our Ghosts Are Different: The Maquette Nova begins as a ghost-like entity haunting the Phoenix Nest, spreading rumours of a spectre in the base.
- Mons: Nova creates a Maquette version of itself by stealing the energy that creates Lim. Eleking.
- Red Herring: The Maquette Nova it created was intended to distract GUYS and waste Mebius' colour timer energy while the real deal attacked Phoenix Nest.
- Smoke Out: Unlike the original Nova whose red smoke was capable of driving people insane, this Nova on the other hand only uses this attack as a smokescreen.
- First Appearance: The Hopes of ComradesVoiced by: Hisao Egawa
- Art Evolution: The second Roberuga is yellow instead of red.
- Continuity Nod: The Black Star from which its remains were made from was the planet that the Flying Saucer Beasts of Ultraman Leo came from, which also makes Roberuga the only one of the Living Saucers to have never been under the control of Commander Black.
- Cyber Cyclops: Essentially, though it's not clear how much of Roberuga is robotic.
- Eye Beams: Shoots purple energy bolts from its eye.
- Hand Blast: Roberuga's preferred tactic is to spam purple orbs of explosive energy from its hands.
- Madness Mantra: The first Roberuga only muttered "Obliterate Ultraman Mebius".
- Spell My Name with an "S": Also translated as Roberugal or Lobegal, due to the "L-R" confusion of the Japanese language.
- Voluntary Shapeshifting: Can transform into a flying saucer like all other Flying Saucer Beasts, but unlike the rest, Roberuga's body is totally retracted into the spaceship-like head rather than simply curled up into the appropriate shape.
Alien Mates Beo
- First Appearance: The Monster Master's LegacyVoiced by: Toshinori Yoshida (also human form actor)
See Return of Ultraman
- Continuity Nod: To "The Boy and the Monster Master" from Return of Ultraman.
- Spell My Name with an "S": Sometimes spelled Bio.
- You Killed My Father: He came to Earth to try fulfill his father's ideals initially, albeit with greater caution. It soon turns into bitter vengeance when Ryu mistakes him for a hostile and shoots him.
- First Appearance: The Monster Master's Legacy
See Return of Ultraman
- Art Evolution: Zoa Muruchi possesses green fins and dark blue spots on its body while its skin is a lighter shade of blue. Otherwise, it is the exact same as the original Muruchi.
- Mythology Gag: Muruchi does a Battle in the Rain with an Ultraman again.
- The Power of Hate: Beo explains to GUYS that Zoa Muruchi is literally driven by Beo's own anger towards humans for the death of his father. Appropriately, "zoa" is supposed to mean "hate" in the Mates' language
- First Appearance: Lady of the Blue Flame
See Return of Ultraman
- First Appearance: The Man Without a HomeVoiced by: Hirohiko Kakegawa
- A Taste of Defeat: What he showed to Mebius, as well as his reaction to having his wrist shield broken by the Mebium Drill Kick.
- Arm Cannon: On his left wrist shield.
- Attack Reflector: His skin acts like a mirror, reflecting all forms of light up to and including Ultraman beam attacks. He can also catch beam attacks with his bare hands and shoot them back out of his "mouth".
- Blade Below the Shoulder: His preferred melee weapon, hidden in his right wrist shield.
- Expy: Not of anyone specific, but rather all the aliens and monsters in the first few episodes of Ultraman Leo. Like them, Reflect had a technique or ability that made him difficult for the hero to kill, forcing them to train and find a way to defeat the villain and overcome their powers.
- Grappling-Hook Pistol: On his right wrist shield. Used to capture the GUYS Phoenix to taunt Ultraman Mebius.
- Luckily, My Shield Will Protect Me: His wrist shields have the same properties as his skin. He tries to use them when Mebius uses the Mebium Drill Kick and fails.
- No Mouth: Has a series of bars that glow when he talks.
- No-Sell: Able to survive any beam attack no matter how powerful thanks to his armour. The same can't be said for intensely strong melee.
- Smug Snake: Was very full of himself thanks to the self-given belief that he was invincible.
- Spikes of Doom: Several spikes on his shell-like body.
- Spin Attack: One of his abilities was to spin around rapidly, turning himself into a deflective weapon.
- Torso with a View: Mebius and Leo defeat him by using their Diving Kicks to smash straight through his body.
- Villainous Breakdown: Alien Reflect appears to be an honorable alien at first. He's well mannered in his speech, always using honorifics, and even spares Mebius after their first battle, claiming that he's too weak and doesn't even tries to rampage afterwards, instead waiting for Mebius to return for a rematch. However, after Mebius managed to damage his shield, he loses it and is quick to use the GUYS crew as hostages to try and secure his victory.
- First Appearance: Azure Waves of Light and ShadowVoiced by: Motomu Kiyokawa
See Ultraman Leo
Alien Psychokino Kako
- First Appearance: Mirai's Younger SisterPlayed by: Ayumi Takamune
- Back for the Finale: Kako returns one last time to help GUYS against Empera.
- Defrosting Ice Queen: Kako starts off very cold and rather mischievous to others, but the words of Mirai leave her changed.
- The Greys: Although Kako and the rest of her kind on Earth spend the majority of the episode disguised as schoolchildren, they're revealed to be this at the episode's end scene.
- Meaningful Name: Since she claims to be Mirai's sister, it's only appropriate that "Kako" means "Past" in Japanese.
- Psychic Powers: The whole gamut of them, including levitation, telepathy, teleportation, creating psychic shockwaves, mind and body control, and empathy. Most of these are for the sole purpose of annoying, humiliating, or even harming others.
- The Trickster: Her species are a whole race of them, travelling from planet to planet to cause chaos and screw around with locals.
- First Appearance: Mirai's Younger Sister
- Achilles' Heel: Getting turned over on its back will render Angross flailing about helplessly while being vulnerable to any attack.
- Drill Mole: Angross' motif.
- Golem: Kako made the monster out of earth to act as a servant, so it definitely could be considered one. Later appearances of Angross are left with unexplained origins though.
- In a Single Bound: Angross is a very strong leaper, going far and wide in its jumps.
- Red Eyes, Take Warning: Especially after Kako increases its power for the final battle.
- Spikes of Doom: Three retractable ones on its back.
- This Is a Drill: Its nose, though it can also act as a jackhammer.
- Tunnel King: Thanks to its drill-nose, which allows it to dig far faster than any other monster.
- First Appearance: Father's ReturnVoiced by: Dai Matsumoto (Angry Face), Shintarō Asanuma (Happy Face), Haji (Sad Face)
- Battle Boomerang: The Angry Face's combat method is a massive boomerang that works just as well as a hammer.
- Collector of the Strange: He collects the petrified bodies of those he defeats.
- Expy: Of Alien Hipporito from Ultraman Ace. Both are very powerful aliens with petrification abilities, and Hipporito's episode also saw the debut of the Father of Ultra, who makes a similar return to save Mebius from Jashrine.
- Jerkass: A cocky, sadistic, and aggressive alien.
- Mayincatec: His motif is Mesoamerican totem poles.
- Mind over Matter: The Sad Face uses telekinesis capable of manipulating even energy beams.
- Sore Loser: He behaves absolutely cocky and mighty when he's winning in battles, but the moment he's defeated, he immediately decides to tunnel into the earth's core to wipe out the entire planet in a Taking You with Me moment, simply out of pure spite. Mebius blows him up before he can do that.
- Spell My Name with an "S": Also called Jasyuline.
- Spin Attack: His most powerful move asides from the Gold-Coating Ray. Capable of causing massive earthquakes that can shatter a planet.
- Taken for Granite: He can fire a powerful ray of energy from his "wings" that turns targets to gold.
- Two Beings, One Body / Multiple Head Case: Somewhere between both with his Angry, Happy, and Sad Faces. Each has their own distinct voice and personality, but only one face can be active at a given moment. They have a tendency to finish each other's sentences as they switch between dominance.
- Victory Dance: Performs a rather humorous one after he defeats Mebius.
- First Appearance: Isana of the Ocean
- Beware My Stinger Tail: Shoots orbs of flaming energy from its tail.
- Chest Blaster: Able to fire the same projectiles from its chest-mounted organic cannons.
- Eyeless Face: It sees via echolocation.
- Fragile Speedster: Although Arigera is one of the fastest monsters in the Ultra Series, it's shown to be physically weak.
- Giant Flyer: Combines this trope with Sea Monster.
- Half the Man He Used to Be: Its fate.
- If It Swims, It Flies: An aquatic monster with flight abilities. It's also insanely fast at flight, capable of travelling around at Mach 6, to the point where the entire episode of its debut is spent on GUYS trying to catch up with it.
- Ptero Soarer: Strongly resembles a pterodactyl, with some additions of bats and sea creatures for design motifs.
- Sea Monster: Arigera is as capable of moving through water as easily as it can soar through the sky.
- Super Speed: Uts basic gimmick, thanks to the organic thrusters on its back. It moves so fast that it creates literal sonic booms.
- First Appearance: The Invincible MotherVoiced by: Tetsuo Sakaguchi
- Bitch in Sheep's Clothing: The Serpent leader told Sayuri she could see her loved ones as long as she fulfilled some important duties to him. She had no idea they were just using her as a pawn to open an invasion gateway inside Phoenix Nest.
- Deal with the Devil: What Sayuri essentially did with the Serpents to see her family again.
- Demonic Possession: Something akin to an evil version of the Ultramen's merging powers.
- Elemental Shapeshifter: Due to being composed entirely of water, they are able to turn into living puddles of water at will.
- Expy: Their design was based off Alien Hook and Alien Borg, primarily in their ridged and featureless faces, metallic bodies, and simplistic clothes.
- Evil Counterpart: Of the Ultramen. In fact, the scene where Sayuri and the Serpentian leader become one is a shot-for-shot imitation of what happened between Goh and Ultraman Jack in Return of Ultraman
- Fusion Dance: The Serpents fuse themselves into a giant-sized being for the fight with Ultraman Mebius.
- Half the Man He Used to Be: After being weakened by salt, the final Serpent Alien get sliced into chunks by Mebius.
- Hand Blast: They can shoot blue blasts of energy from their wrists.
- Healing Factor: As long as they're exposed to moisture, this applies.
- Hoist by His Own Petard: The lead Serpent did not expect Sayuri's willpower to see her loved ones again to be stronger than his ability to take over her body.
- Salt Solution: The Serpent Aliens' bodies are greatly weakened by salt, to the point of crumbling apart upon contact.
- Weaksauce Weakness: Salt, as their bodies are almost entirely made out of water.
- First Appearance: Lonely Paradise
- The Assimilator: Absorbs life into its mass, but since it can't move, the Soliturans look for the victims. It also takes on the form of its surroundings, as it first appears as a mass of pale white tendrils that then gain a woody texture and pile themselves up into the form of a tree monster upon grabbing some trees.
- Half the Man He Used to Be: His fate.
- Lotus-Eater Machine: Solitura's power is to put victims into a state of happiness and bliss in such a fashion while it assimilates them.
- Meaningful Name: Solitura's name is Latin for "loneliness", as its minions target people unhappy with being alone in life.
- Mook Maker: Creates Soliturans from the flowers on its mass to collect victims. The Soliturans can also remerge with Solitura as needed.
- Planetary Parasite: Essentially what Solitura is — a monster that assimilates all life on a planet, merging their consciousnesses and the planet with itself.
- Poisonous Person: Sprays poison pollen from its forehead.
- Spell My Name with an "S": Also known as Sorichra.
- When Trees Attack: Takes on the form of a tree kaiju upon the immediate assimilation of its forested surroundings, though it can disassemble this form to remain hidden until it desires to attack.
- Whip It Good: Its preferred weapons are the vines that make up its arms.
- First Appearance: Lonely ParadiseVoiced by: Nobuhiko Tanaka (also human form actor)
- Foul Flower: They're flower-headed people spawned by flower growing from Solitura's body and then sent to find victims for assimilation.
- I Am Legion: The Soliturans call themselves "we", as they are offshoots of Solitura rather than individual beings.
- In the Hood: Their human forms, wearing hoods like creepy cultists.
- Plant Person: Their true form is essentially a humanoid mass of vines with a flower-topped head.
- Poisonous Person: They possess the same poison pollen as Solitura, which paralyzes the nervous system.
- Spell My Name with an "S": Sometimes called Sorichrans.
- Voluntary Shapeshifting: They disguise themselves as white-robed humans to make their search for victims easier.
- Whip It Good: They can transform their arms into whip-like vines to lash and strangle people.
- First Appearance: Teacher's Memories
See Ultraman 80
- Continuity Nod: Shinji, whose Minus Energy had created the original Hoe in Ultraman 80 appears in the episode, and his old classmates ask him if he somehow did it again when Hoe reappears.
- Face Death with Dignity: Once Ultraman 80 arrives, Hoe is simply willing to let the Ultra end his existance, standing on the spot for 80 to erase him via Buckle Beam.
- Non-Malicious Monster: Hoe doesn't attack its surroundings, as it was conjured by Sakuragaoka Middle School in an effort to bring back Ultraman 80 to see his students one more time. When 80 shows up, Hoe doesn't even fight back and lets him kill it.
- Tragic Monster: It ultimately represents the desire of 80's students to see their old teacher that they never said goodbye to, again. Instead of attacking its surroundings in rage, it attacks Mebius in pure grief and even cries tears as it fights him, only calming down when 80 arrives.
- First Appearance: A Visit From an Old Friend
- The Assimilator: Gadiba assimilates the DNA of other monsters in order to take their forms, which it does to Gomora and Red King. Worse still, it can steal the DNA of those it battles in order to strengthen other monsters, like using Ultraman Mebius' powers to create Mebius Killer.
- Continuity Nod: To assimilate Gomora and Red King, Gadiba visits Johnson Island and Tatara Island, where the original ones appeared in Ultraman.
- Evil Doppelgänger: In its Gomora and Red King forms, which also benefit from being more powerful than the standard versions.
- Fog of Doom: It's a Choju made entirely of smoke.
- Knight of Cerebus: Though GUYS doesn't realize it at the time, Gadiba's appearance marks the beginning of the series finale's 4 Heavenly Kings story arc and the buildup to the arrival of Empera.
- Pet Monstrosity: Unlike other Choju, it's more of a pet to Yapool than a weapon.
- Red Eyes, Take Warning: Its only clear features.
- Shapeshifter: Takes on the form of Red King to battle GUYS, but after being defeated by Mebius, it immediately transforms into Gomora for Round 2.
- First Appearance: Threat of Mebius KillerVoiced by: Ryoichi Tanaka (in Ghost Rebirth)
See Ultraman Ace
- Art Evolution: The original Ace Killer was a silvery colour in Ultraman Ace. Mebius Killer is more golden this time and also wears a Mebium Brace.
- Back from the Dead: In Ultraman Mebius Gaiden: Ghost Rebirth with Yapool possessing it.
- Suddenly Voiced: In Ghost Rebirth, due to the fact that Yapool is trapped in the Choju's body for unknown reasons.
- First Appearance: Ace's Wish
See Ultraman Ace
- Played by: Aiko Ito
- Played by: Ouga Tanaka
- First Appearance: Ultraman Mebius and the Ultra Brothers
- Big Bad: Of The Movie, albeit with Yapool controlling its mind via Demonic Possession.
- Blinded by the Light: Can emit flashes of stunning light from its chest and shoulders.
- Breath Weapon: U-Killersaurus Neo possesses a massive one from is mandibles capable of completely vaporizing anything it hits.
- Chest Blaster: U-Killersaurus Neo has a huge energy cannon built onto its underside that devastates any who try to attack it from below.
- Combat Tentacles: Lots of them; all tipped with claws. And they can extend way beyond its normal reach.
- Eye Beams: Shoots blue lasers from is eyes.
- The Juggernaut: This thing is so damn powerful that the combined efforts of four veteran Ultra warriors could only barely succeed in imprisoning it (and at the cost of so much energy that they had to remain in human forms for 20 years). And don't get us started on its second form, which not even the arrival of Ultraman Taro and Zoffy could help in tipping the balance very much..
- Made of Evil: According to Yapool, he created U-Killersaurus from his sheer hatred of the Ultras.
- Names to Run Away from Really Fast: The "U" stands for "Ultra", which should give a good idea of why Yapool created the creature.
- One-Winged Angel: Its second form, U-Killersaurus Neo. It grows from 79 meters to a whopping 303 meters in height, with the original body being reduced to where the stinger tail would be on a scorpion-like colossus.
- The Power of Hate: According to Yapool himself, this thing was made from Yapool's undying hatred for the Ultras.
- Playing with Fire: Breathes purple fireballs.
- Scary Scorpions: U-Killersaurus Neo is an utterly colossal scorpion-like monster with a massive stinger tail that ends in the original U-Killersaurus' form.
- Shock and Awe: Can fire lightning from its tentacles.
- Spikes of Doom: It can also fire them like missiles.
- First Appearance: Ultraman Mebius and the Ultra BrothersVoiced by: Daisuke Gōri
See Ultraman Taro
- Art Evolution: Alien Temperor receives a more menacing redesign, with a slimmer body, a thinner head, longer limbs, and narrower eyes
- Badass Cape: It now possesses the ability to transform into a pair of wings for flight.
- Beam-O-War: Blasts his Electrical Beams against Mebius' Mebium Shoot. And loses.
- Miles Gloriosus: He constantly trash-talks on how he views himself as superior to the ultras, appoints himself as the leader of the four aliens, and said that "insignificant rookie Mebius is barely a threat". To prove him point, he decides to attack Kobe directly to draw Mebius out... and is the first of the four to be killed by Mebius. The other three aliens lampshades this saying how Temperor's actions are louder than words.
- First Appearance: Ultraman Mebius and the Ultra BrothersVoiced by: Takeshi Aono
See Ultraman TV Series
- Art Evolution: Alien Zarab has a narrower and more detailed head, as well as more distinct skin texture than the original one.
- Barrier Warrior: Unlike in his original appearance, Zarab can create a small force field to block attacks.
- Beam-O-War: Much like Temperor, Zarab battles Mebius like this as well, in the form of Imitation Mebius with his own version of the Mebium Shoot. Mebius wins again.
- Eye Beams: Another ability the original Zarab did not possess.
- Mythology Gag: Zarab gives Mirai a poisoned drink while in the form of Aya. Likewise, the original Zarab in Ultraman took the form of Fuji to incapacitate Arashi by spiking his tea.
- First Appearance: Ultraman Mebius and the Ultra BrothersVoiced by: Piston Nishizawa
- First Appearance: Ultraman Mebius and the Ultra BrothersVoiced by: Ryusei Nakao
See Return of Ultraman
- Art Evolution: Like the other three aliens, Nackle receives a redesign in this series, with smaller eyes, a narrower head, a bumpier and darker skin texture, and smaller spots.
- Hand Blast: Whereas the original Nackle only had Eye Beams, this one can shoot chargeable energy blasts from his hands as well.
- It's All About Me: Cares little for the fact that the rest of his teammates are all dead, he wants the glory of resurrecting U-Killersaurus and conquering Earth all to himself.
- Karmic Death: He views his teammates as expendable and cares nothing about their deaths at the Ultras' hands. U-Killersaurus/Yapool kills him the second he's freed mocking him for being a mere pawn of his plans.
- Mythology Gag: This isn't the first time Alien Nackle has crucified an Ultra hero. Just ask poor Ultraman Jack.
- You Have Outlived Your Usefulness: Yapool has U-Killersaurus kill him seconds after being freed deeming Nackle a sacrificial pawn no longer of use to him.
- First Appearance: Ultraman Mebius Gaiden: Hikari Saga
- Genius Loci: The Aarb are both the planet they live upon and the crystals that grow all over its surface.
- I Am Legion: Due to the Aarb being as much the planet as they are its inhabitants, they refer themselves as "we".
- Shock and Awe: Although a peaceful people, the Aarb are able to fire lightning bolts from their forms for self-defense, though it proved futile against Bogal.
- Silicon-Based Life: They're essentially sentient crystals. When they speak to Hikari, they uproot themselves and make a figure with a vaguely humanoid outline.
- Spell My Name with an "S": Also called Aabu or Arb.
- First Appearance: Ultraman Mebius Gaiden: Armored DarknessVoiced by: Ryuzaburo Otomo
- Animated Armour: Of Empera, designed specifically to avenge him.
- Assimilation Backfire: Armored Darkness becomes paralyzed if the one it is controlling somehow regains control of themselves. Ultraman Hikari was able to do this, giving GUYS the time they needed to formulate a plan to free him from Armored Darkness.
- Avenging the Villain: Its purpose was to destroy Earth after Ultraman Mebius and GUYS defeated Empera.
- Casting a Shadow: Armored Darkness can fire beams of darkness from its trident.
- Clingy Costume: As an animated suit of armour, it requires a wearer in order to use its power to its fullest. For this reason, it can force itself on somebody, imprisoning the wearer inside it and controlling them to use it (as Ultraman Hikari, and later Ultraseven, found out).
- Demonic Possession: Anybody who is forced to wears Armored Darkness becomes a victim of this as the suit of armour gains full control over their bodies to move about.
- Phantom Zone: Its Darkness Sphere, which it intended to use to crash into Earth and cause a cataclysm. Entering the sphere brings one into a shadowy and desolated wasteland that nullifies light-based powers. According to some materials, it's meant to be a representation of what Empera's homeworld looks like.
- Prongs of Poseidon: It carries a two-headed trident that can shoot beams of dark energy.
- Red Eyes, Take Warning: Its Glowing Eyes of Doom.
- First Appearance: Ultraman Mebius Gaiden: Ghost RebirthVoiced by: Hideyuki Hori
- Anti-Hero: Opposes the 4 Heavenly Kings as much as Mebius does in the story, but only because fighting is the one thing he cares about.
- Back from the Dead: Is actually Zamusha revived by the 4 Heavenly Kings as a cyborg to become the new body for a resurrected Empera.
- Blade Below the Shoulder: Mecha-Zam's weapon of choice, known as the Zanbar.
- Blood Knight: Mecha-Zam battles for the sole interest of fighting, as he believes that it is his purpose
- Cyborg: Though from who and for what reason he was built, he cannot remember.
- Fire-Forged Friends: With Ultraman Mebius. Quite literally too, since they both fought side-by-side in the Valley of Flames.
- Healing Factor: Like those of the Imperisers.
- Man on Fire: Happens to Mecha-Zam at least twice, thanks to getting hit by Zetton's fireballs and dropped into the Valley of Flames. Thankfully his regeneration powers keeps him alive and Ultraman Mebius prevents Zetton from doing further damage.
- Soulless Shell: Due to the fact that he's actually meant to be Empera's new body, though the ritual to put Empera's spirit inside him requires the Giga-Battlenizer.
- First Appearance: Ultraman Mebius Gaiden: Ghost Rebirth