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Characters / Captain Earth

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An organization dedicated to protecting Earth from the libido-eating Kiltgangs. In order to protect Earth from the Kiltgangs, they utilize giant robots called Earth Engines, piloted by specially chosen teenagers. These teenagers eventually form a team called the Midsummer's Knights. They monitor space for Kiltgang activity from the Tanegashima Base and from Tenkaido, a space station where thousands of skilled individuals await in stasis in the event that Earth falls and humanity needs to repopulate.

Daichi Manatsu

Voiced by: Miyu Irino

An Ordinary High-School Student that finds himself drawn into a war between Earth and the Kiltgangs. He is the only one who can use the Tanegashima Livlaster, a pistol-like object required for piloting the Earth Engine Impacter. As a child, he befriended Teppei and woke Hana.

Teppei Arashi/Albion

Voiced by: Hiroshi Kamiya

A member of Globe and one of Daichi's childhood friends. He met Daichi as a child when he summoned a giant ringed rainbow at the Tanegashima Space Center. He is actually the Kiltgang Type-3 robot Albion.

Hana Mutou

Voiced by: Ai Kayano

A mysterious girl found in the Tanegashima Space Center basement, enclosed in an energy field and clutching the Tanegashima Livlaster. She has a connection to a ship named Blume, which is located somewhere on Tanegashima. Hana is also able to empower a Machine Goodfellow unit with a song.

Akari Yomatsuri

Voiced by: Rina Hidaka

A cheerful and enthusiastic self-styled Magical Girl. She is an incredibly skilled hacker, capable of effortlessly entering any government system and doing as she sees fit inside.

    The Planetary Gears 
A group of Human Aliens called Kiltgangs residing on the dark side of the moon. They feed on Orgone energy, which comes from the libido of advanced species. They want to drain Earth of its Orgone energy, resulting in the end of humanity. The Kiltgangs have two forms: their Designer's Children body and their giant robot forms. The Designer's Children bodies are genetically engineered, human-like bodies. Their robot bodies can be accessed by a stationary cockpit-like machine called 'Machine Goodfellow'. Their true consciousness is stored in Ego Blocks.

General Tropes

  • Action Bomb: Puck turns their Ego Blocks into bombs since they're infinitely more useful and cooperative as high-yield explosives. Siren, Bugbear and Malkin do blow up their own Ego Blocks in order to damage Robin Goodfellow.
  • And I Must Scream: Their ship is out of fuel and stuck orbiting Uranus. If they fail to get enough Orgone Energy in time, not only will they be marooned in the Solar System, but they themselves will enter into a very unpleasant stasis.
  • Animal Motifs
  • Attack Its Weakpoint: Destroying their Ego Blocks will permanently neutralize their Kiltgang bodies and rob them of their immortality. Unfortunately, they can only be destroyed if the Kiltgang themselves choose to do so. However, there was a roundabout of this. If their bodies were hijacked while in Kiltgang forms, as Puck in this case, they could be reverted to their Ego Block and then being used as bombs
  • Body Surf: The Designer Children were originally supposed to be vessels for other people to install their consciousnesses into younger bodies, allowing them to prolong their lives. Their unique genetic structure made them perfect hosts for the minds of the Planetary Gears.
  • Brought Down to Normal: At the end.
  • Bullying a Dragon: Harassing, pursuing, and attacking Hana only made her even more powerful.
  • Can't Catch Up: Their Machine Goodfellows get a Mid-Season Upgrade that lets them maneuver better. Hana quickly gains access to the Blossom, whose homing projectiles make this new feature useless.
  • Color-Coded Characters/Rainbow Motif: All of their character colors are reflected by their general colors when in Kiltgang form and Gig Mode, their clothes after the Evil Costume Switch (which are all combined with black), Egoblocks and hair colors. One slight exception is Teppei, whose hair is rather purple than white and whose Kiltgang form also incorporates Everything's Better with Rainbows.
    • Amarok: dark blue
    • Malkin: pink
    • Albion: white
    • Lieban: light blue
    • Aiatar: yellow / gold
    • Zimbalt: red
    • Bugbear: green
    • Siren: purple
  • Desperately Looking for a Purpose in Life: The unawakened members tend to feel like there's something missing in their lives, leaving them feeling unsatisfied and adrift.
  • Evil Costume Switch: The newly awakened members all get a costume change.
  • Evil Feels Good: Piloting their robots is extremely pleasurable for them.
  • Fantastic Racism: Against anyone that isn't a Planetary Gear basically.
  • HeroicSacrifice: Amara sacrifices his Ego Block to save Moco from Robin Goodfellow. Shortly thereafter, Moco, Baku and Setsuna destroy their Ego Blocks to damage Puck.
  • Human Alien: They look human in their Designer Child bodies, save for some unusual hair colors.
  • Humongous Mecha: They are the robots, although they spend most of their time in human form.
  • Immortals Fear Death: As well as stasis.
  • Immortal Immaturity
  • Magic Kiss: They can read memories with a kiss. They can also transfer them if it's between two of them.
  • Manchurian Agent: There are numerous latent Kiltgang members scattered about Earth. Most are unaware of their true identities and lead ordinary lives as humans. However, Amara and Moco are in the process of tracking them down and awakening their Kiltgang powers.
  • Meaningful Name: The Kiltgangs have names derived from different myths or folklore, more or less going in line with the characters in question, which also goes for their avatar names. See here for details.
  • The Right of a Superior Species: Seems to think they're justified in preying on humans, as they view themselves as the superior species.
  • Smug Snake: While formidable, none of them are as powerful or clever as they like to think they are.
    • Reaches the peak of this trope as they try to talk down to the heroes during the finale, but are completely helpless when Puck takes over.
  • Soul Jar: The Ego Blocks contain a digitized form of their consciousness. So long as the Ego Block remains intact, the Kiltgangs are theoretically immortal.
  • Stripperiffic: Their piloting forms, called Gig Mode, don't leave much to the audience's imagination. Considering they're aliens, it's questionable they're actually wearing anything.
  • Teens Are Monsters: Despite their vast ages, they have the temperament and emotional maturity of teenagers and not the Wise Beyond Their Years sort either.
  • Underestimating Badassery: Constantly.
    • Their contempt for humanity is ultimately their undoing as they are continuously thwarted by the Intercept Faction and are all but enslaved by Puck due to him using a HUMAN invention.
  • We ARE Struggling Together: Moco and Amara seem to be the only ones that like spending time with one another and the rest are only united under the tenuous fealty to Siren and their desire to not end up in stasis for lack of Orgone Energy.
  • What Measure Is a Non-Human?: The group considers non-immortals to not be "real people", but Daichi points out that they themselves don't have a clear definition as to what a "real person" is.
  • You Gotta Have Blue Hair: They tend to have oddly coloured hair.


Voiced by: Kenichi Suzumura

The Type-1 Kiltgang robot, Amarok. His Designer's Children form is known as Amara. He was responsible for the death of Taiyou Manatsu and the huge crystal covering most of the moon.


Voiced by: Maaya Sakamoto

The Type-2 Kiltgang mech known as Malkin and Amara's second-in-command.


Voiced by: Haruka Kudo

A The leader of the Planetary Gears on Earth and a member of the Kiltgang Royal Family.

  • Active Royalty: The other Planetary Gears are totally subservient to her, and she is stated to be a member of the Royal Family.
  • A Child Shall Lead Them: Setsuna is the youngest physically, but quickly assumes the leadership role for the Planetary Gears once awakened.
  • Cheerful Child: At least until she learns the reason why Doctor Mao was taking good care of her...
  • The Leader: Of the Planetary Gears
  • Magic Music: Her singing drains the Orgone energy from humans in a large area around her.
  • Nice Hat: Wears one after regaining her memories.
  • Not So Different: Is disturbed that the exploitation that she and the other Planetary Gears suffered at the hands of humans isn't all too different from what the Kiltgang intends to do to them, possibly making them just as bad as their oppressors.
  • Ridiculously Cute Critter: She has a pink squirrel companion named Lappa. Unlike Hana, she does not speak squirrel. In episode 15, when her memories are unlocked, Lappa mysteriously vanishes.
    • Lappa returns after her Ego Block is destroyed.
  • Verbal Tic: Ends all of her sentences with "desu".
  • The Worf Effect: Her Kiltgang form has the power to resurrect the other Planetary Gears as long as their Avatars are alive and drives the Midsummer Knights into a corner, yet is ultimately utterly helpless when Puck attempts to kill her.


Voiced by: Kouki Uchiyama

A young dealer working in a casino in Odaiba. He's the Type-6 Kiltgang Zimbalt.

  • Ax-Crazy: More interested in just killing humanity and hurting others than actually consuming their libidos.
  • Badass Longcoat: His preferred attire after regaining his memories.
    • His Kiltgang form has long armor plates that resemble a long coat as well.
  • Evil Laugh: Indulges in some good old-fashioned maniacal laughter while attacking Daichi.
  • Peek-a-Bangs: The entire left side of his face is covered.


Voiced by: Nozomi Yamamoto

An Idol Singer who's not happy with her career. She's the Type-5 Kiltgang Aiatar.

  • Absolute Cleavage
  • Cleavage Window
  • Friendly Sniper: Villainous variant, she blows kisses and winks playfully as she shoots.
  • Glacier Waif: Her mech seems to lack maneuverability, but makes up for it with firepower. In her fight with Daichi, her mech remained stationary while attacking.
  • High Class Gloves: A part of her default uniform.
  • Idol Singer
  • Nice Hat: Wears a black beret when she's not performing as an idol. She also wears hats while on duty sometimes. She is an idol, after all.
  • No Kill Like Overkill: When she borrows Zimbalt's Singularity. A few dozen chunks of debris would have been more than enough to destroy the Tenkaidou. She flings a little over five hundred.


Voiced by: Megumi Han

A lone biker with an obsession for speed. She's revealed to be a Kiltgang and the pilot of the Lieban.

  • Animal Motifs: Mermaids.
  • The Bad Guy Wins: She's the only awakened Kiltgang to survive in her Machine Goodfellow and go to her Kiltgang form.
  • Biker Babe
  • Cleavage Window
  • Go Mad from the Revelation: Among the Planetary Gears, she's the one that becomes the most unhinged after learning her true nature.
  • Irony: She claims that "Real people don't die," during the Lotus-Eater Machine sequence in Episode 23, but is the first one to get blown up by Puck in the following episode.
  • Put on a Bus: Save for a brief appearance when all the Gears are reunited, she disappears after her Kiltgang form is defeated and does not contribute to invasion.
  • Super Speed
  • Transforming Mecha: Her Machine Goodfellow, Ningyohime, can go from speedy underwater craft to a more humanoid mech form.


Voiced by: Toshiyuki Toyonaga

A slave for the Yakuza who fights in their underground arena. He's the Type-7 Kiltgang Bugbear.

  • Always Save the Girl
  • Animal Motifs: Bears.
  • Anti-Villain: While the other Planetary Gears are eager to consume humanity and get their ship fueled up, Baku cooperates because he has absolutely nothing else left.
  • Death Seeker: Daichi senses that Baku isn't putting as much effort into fighting, almost like Baku wants to die.
  • Despair Event Horizon: Hits this hard after Kumiko dies for real.
  • Healing Hands: Kind of. His Singularity allows him to fix broken things, including but not limited to shredded playing cards, a ripped up photo, an entire yacht and people. He can "revive" the dead by creating a facsimile of them, but are not truly alive.
  • Heartbroken Badass: While he was by no means in an ideal situation as a Designer Child, Baku was at least content to serve Kumiko as a guardian and prize fighter. All that is taken away when his memories are restored and Kumiko dies.
  • Put on a Bus: Like Lieban, he does not contribute directly to the Gear's invasion plans and makes virtually no appearances after his initial introduction.
  • Straw Nihilist: He only contributes to the Gears' invasion plan because he feels that human life is fragile, fleeting, meaningless and void of anything but pain.
  • The Rival: To Amarok.
  • The Stoic: Even his rage is empty of conviction.
  • Super Strength: Regularly took on opponents twice his size in the ring. Baku beat them without a sweat every time.
  • Token Good Teammate: He seems shaping this way. Even Daichi points out he's different from the rest.
  • Woobie, Destroyer of Worlds


    The Ark Faction 
An organization opposing the Intercept Faction, which Globe is a part of. The Ark Faction believes that fighting the Kiltgangs is futile and actually wants to help the aliens conquer Earth.

Masaki Kube

The leader of the Ark Faction. He works closely with Amara and Moco, not realizing they are Planetary Gears. Kube has access to a supercomputer named P.A.C. (pronounced Puck), which provides predictions for Kube.
  • Les Collaborateurs: Actively interferes with Globe's effort to repel the Kiltgangs and assists the aliens in their endeavors.
  • Godhood Seeker: He wants to rebuild the world with a chosen few after the Kiltgang obliterate the rest of humanity.
  • Grand Theft Me: By Puck.
  • Out-Gambitted: Again, by Puck.
  • The Quisling
  • Too Dumb to Live: Although he supports the Ark Faction and hopes the Kiltgang reach Earth, he has absolutely no idea that Amara and Moco are Planetary Gears and that they're using the Machine Goodfellows to activate their Kiltgang forms.
  • Smug Snake: Kube thinks that he's in control, but in reality he's being played by both Puck and the Kiltgangs.


A super-advanced AI hidden within the Ark Faction HQ. P.A.C., or Puck, provides Kube with analyses and predictions to ensure the Ark Faction's success.
  • A God Am I: As Robin Goodfellow.
  • A.I. Is a Crapshoot: Puck isn't evil, per se, but he isn't working for Kube. His true masters are Moco and Amara. Or so he wants them to think.
    • Played totally straight when he turns on Kube AND the Gears and decides to take over the Universe.
  • Assimilation Plot: His goal after perfecting the research of Doctor Mao.
  • Beam-O-War: He engages in one of these with Daichi in the penultimate episode. He loses, but also wins.
  • Big Bad
  • Catchphrase: "Puck does not lie."
  • The Chessmaster: He's pulling everyone's strings, both Kube and the Planetary Gears.
  • Evil Counterpart: To Hana, as he was also an artificial being created to serve the Planetary Gears that ultimately turned against them. Likewise, they both found form and purpose on Earth.
  • Evil Knock Off: While the Kiltgang are far and away from what you could consider good, his Ego Block is a gigantic and grotesque parody of the ones they possess.
  • Evil Laugh
  • Grand Theft Me: Pulls one on Kube.
    • And on Hana in the finale.
  • The Hedonist: The very first thing he does after gaining a human body is seduce Kube's secretary. He then preceedes to hit on or sleep with every woman in Macbeth Enterprises.
  • Hidden Depths: While Puck answers to both Kube and the Kiltgang, he actually seems to be manipulating both sides, as well as others.
  • Humongous Mecha: As Robin Goodfellow.
  • The Matchmaker: Puck tries to hook Kube up with his secretary, but he has ignored it so far.
    • Once he gains control over Kube's body, he goes and hits on her. With success. Of course, she dumps him when he starts sleeping around.
  • The Mole: He's the Auberon's artificial intelligence, sent to Earth to sabotage the humans' efforts to stop the Kiltgang. He had other ideas.
  • Shoot the Medic First: The Kiltgang member that he tries to take out first? Siren, who has the ability to revive fallen Planetary Gears.
  • Turned Against Their Masters: To Kube, who was never really his master and eventually to his true taskmasters, the Kiltgang, who he proceeds to enslave.

Salty Dog

A group working closely with Globe. They are ostensibly working with the Intercept Faction to protect Earth from the Kiltgangs, but their actions hint at a far more shady goal.

Sir Doggy

Mister Bau


Professor Canis

The man responsible for developing the Kivotos Plan.
  • Evil Old Folks
  • Faux Affably Evil: When he introduces himself to Daichi, he does act polite, but quickly reveals his true nature after they embark back down to Earth.
  • Insane Troll Logic: His final line in the series is "don't stop us from saving the Earth!" as the Midsummer Knights go off to fight the Kiltgang for the last time while his faction actively tries to stop them, by any means necessary. Considering that his plan is actually handing Earth to the Kiltgang on a silver platter and launching Hana, locked up in the control capsule of her ship, with no way to get out, to parts of space unknown, holding a cargo of, from all lines in the series, a group of genetically engineered children, all boys, with the knowledge that the Kiltgang can sense and pursue Hana wherever she goes after they're done feeding on Earth's libido, turning the planet to a giant crystal coffin, like they did with the Moon, one has to wonder what his definition of "save" is.

Hirosue Reito/"Pointer"

The first member of Salty Dog stationed at Tanegashima. He was responsible for keeping control of Hana.

  • Easily Forgiven: Despite outfitting Teppei, Hana and Daichi with lead gears, attempting to kidnap Hana (Twice!), holding Daichi at gunpoint with the intent to kill him and threatening to destroy the Tenkaidou, Daichi still forgives him.
  • Four Eyes, Zero Soul
  • A Real Man Is a Killer: Mocks Daichi for refusing to shoot him when he holds Hana at gunpoint, claiming that someone like Daichi is too weak to protect Earth.
  • Well-Intentioned Extremist: As much of a bastard as he is, he genuinely does want to protect Earth.
  • Would Hit a Girl: More like "Would Shoot a Girl".
    • Turns out he was bluffing, as killing Hana would completely ruin the Ark Faction's plan. But he is willing to blow up the Tenkaidou Space Station with everyone on board.

    Other Characters 

Doctor Mao Marimura

A research scientist who worked for Macbeth and was partially responsible for the Designer Children project.



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