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All spoilers for Chairman Victor, Tony Frost, Seno Miyagi, and Progenitor of the Blue's sections are unmarked. You Have Been Warned!
Yuji Kaido
Voiced by: Kenji Nojima (JP), Eric Vale (EN)
The protagonist of the series. After being diagnosed with an incurable disease (later discovered to be B-cells), he decided to be put in cryogenic sleep in hopes that an effective treatment will be developed soon. In 2031, twenty-two years later, Yuji wakes up to find the world overrun by the Blue. With everything he knows gone, Yuji teams up with Marlene to find a new purpose.- Babies Ever After:Marlene becomes pregnant with his child after they make love for the first time.
- Fish out of Temporal Water: Yuji was frozen for 20 years.
- He Who Fights Monsters: When his B-cells awaken, he becomes a bloodthirsty fighter out to kill the Blue.
- Living MacGuffin: As a sample, he is wanted by Second Earth.
- Love Redeems: Marlene manages to snap him out of his temporary insanity.
- Masculine Girl, Feminine Boy: The feminine boy to Marlene’s masculine girl.
- Pro-Human Transhuman: Becomes this by end of the series, not only wanting to protect humanity but because he wants to protect the one good thing that came into his life since waking up from his cryo sleep: Marlene.
Marlene Angel
Voiced by: Houko Kuwashima (JP), Laura Bailey (EN)
Orphaned at the age of ten because her parents were killed by the Blue, Marlene was one of the few lucky ones to make it to Second Earth. Since then, Marlene has dedicated and trained herself to defeat the Blue.- Babies Ever After: She becomes pregnant child with Yuji after they make love for the first time.
- Defrosting Ice Queen: Though she starts off as cold and disregards human life, she learns to appreciate things a little more thanks to Yuji.
- Masculine Girl, Feminine Boy: The masculine girl to Yuji’s feminine boy.
- Mind Rape: Her higher-ups frequently discipline her by showing her the brutal deaths of everyone she cares about.
- Ms. Fanservice: Usually the one appearing naked, and easy on the eyes.
- Pregnant Badass: In the (very) early stages during the last two episodes.
- The Smurfette Principle: She's the only woman in her squad at the beginning of the series.
- The Squadette: She is this at the start of the anime. She's not the only woman in the squad, but she's the only one seen piloting an Armor Shrike.
- Unknowingly in Love: Combined with What Is This Thing You Call "Love"?. When she and Yuji get separated after they successfully arrive on Second Earth, she repeatedly expresses frustration and confusion because she still cares about him despite the Escort Mission being over, and obsesses over where he is and what he's doing. Considering how cold everyone on Second Earth is, this may be a completely new, totally unexplained sensation to her.
- You Are Number 6: Her code number is 2805.
Dice Quaid
Voiced by: Banjou Ginga (JP), Dameon Clarke (EN)
A former soldier whose entire team got wiped out by a Landwhale Blue at an abandoned base in the middle of a desert region. Now is a jaded yet upbeat man who just wants to live a quiet life in the middle of nowhere. But he eventually aids the two protagonists' mission to a space base along the way.- Old Soldier: While his exact age was not specified, from his rugged looks, weariness and skills from combat has made him look to be much older than Yuji and Marlene at least. Plus, he completely forgotten what his rank and designation were when asked. He just shrugs it off as "That was a LONG time ago".
- The Lost Lenore: During his episode debut, he was pursuing a certain Blue that wiped out not only his team but also his lover. The details on if this supposed lover was male or female is unclear. What is apparent is that this person meant alot to Dice as he felt at most guilt in not protecting said person.
Tony Frost
Voiced by: Hiroyuki Sato (JP), Jerry Jewell (EN)
Another sleeper who unlike Yuji, awoke on Second Earth. A very powerful sleeper, he is easily the most advanced member of the Sleeper Brigade and trusts no one. Yuji strives to improve himself to be able to beat Tony. Tony seems to have no emotion except for the euphoria of destroying Blue.- A God Am I: He declares that upon wiping out humanity, he will become the world’s Messiah.
- Big Bad: Briefly becomes this when he kills the council, as he takes over the station with the Blue and tries to kill everyone in it.
- Dark Messiah: Begins to think of himself as one as the series goes on and his sanity deteriorates- he declares that he will become Gaia’s Avenger and save the planet from humanity.
- The Dragon: He becomes one to Gaia later on, leading the Blue attack on Second Earth.
- Face–Heel Turn: After becoming corrupted by his B-cells.
- Kill All Humans: His goal after his Face–Heel Turn.
- Misanthrope Supreme: He hates humans for what they have done to the planet and joins the Blue for the chance to destroy them.
- The Quisling: He joins the Blue and actively seeks to help them destroy humanity.
- The Stoic: Shows no emotion except when he’s fighting the Blue.
- Walking Spoiler: His main role of the story pertains to his Face–Heel Turn.
Alicia Whistle
Voiced by: Miwa Yasuda (JP), Lisa Ortiz (EN)
Another sleeper on Second Earth who is paired with Tony. She immediately gravitates towards Yuji, seeing Marlene as an obstacle to a relationship with him. She is very young and often naive.- The Cutie: The most Moe character in the series by far.
- The Dragon: To Tony, after her Face–Heel Turn.
- Face–Heel Turn: After becoming corrupted by her B-cells, she joins Tony in his crusade against humanity.
- Love Triangle: In one with Yuji and Marlene, though she obviously has no chance.
Seno Miyagi
Voiced by: Katsunosuke Hori (JP), Kyle Hebert (EN)
A high-ranking member of the science division on Second Earth. He suggests that Marlene and Yuji are kept together in order to get the best results from Yuji in the sleeper program. Though he works under the High Council, he doesn’t always see eye-to-eye with them.- Defector from Decadence: he eventually becomes feed up with the High Council's blatant disregard for everyone's safety and their misuse of the B-Cell which could lead to their own demise which prompts him to stage a coup against them.
- Driven to Suicide: In The Movie, he shoots himself at the end.
- Expy: Of Gendo Ikari in appearance. He also shares Gendo’s role of working for an Omniscient Council of Vagueness while also plotting to betray them for his own agenda.
- Ignored Expert: Even as the dangers of the B-Cells started to become clear to him, the High Council still decided to ignore his warnings and they ended up paying dearly for it.
- Rebel Leader: The leader of The Ark, the group that resists the High Council.
- Screw This, I'm Outta Here: After he finds out about the Blue's supposed true purpose he decides that as the Earth clearly don't want humanity and thus decides to abandon the planet and for humanity to live out its existence on Second Earth. This backfires when eventually everyone kept on the station go mad and stage a rebellion against him, eventually resulting ion the whole station being destroyed from within.
- Walking Spoiler: Though appearing to be a Reasonable Authority Figure loyal to the High Council, his true intentions, to overthrow them and abandoning Earth to keep humanity on Second Earth, make him this.
Rick Kilmer
Voiced by: Eiji Ito (JP), Sean Schemmel (EN)
Rick is a military Elite, and although he fights on the Sleeper Brigade, he is not a Sleeper. He is cocky, confident, and loves strong women, especially Marlene.- Amazon Chaser: The reason he is attracted to Marlene is because of her strong, confident personality, which is a quality he admires in women.
Doug Vreiss
Voiced by: Shunsuke Shima (JP, Episode 12), Katsuhiro Kitagawa (JP, Episode 13+), Bradford Jackson (EN)
Doug is the assistant to the High Council and a high-ranking official on Second Earth. He is the Director of the Military Station, and also participates in High Council inquiries.- The Dragon: To the High Council.
- Dragon Their Feet: After the High Council is gone, he tries to carry out their will only to be shot dead by Seno.
Amick Hendar
Voiced by: Chizu Yonemoto (JP), Wendy Powell (EN)
One of the officers on board Second Earth, where she usually train the soldiers at Education Station.- Drill Sergeant Nasty: She is authoritarian in terms of drilling her soldiers, to the point of beating recruits as punishment.
- General Ripper: Amick shared the cold ruthlessness of the human military that included avoiding No Man Left Behind. When Marlene disobeyed her order yet managed to reach the time limit while carrying her "wounded" comrade in training, Amick zapped her in order to tow her back into her doctrine.
The High Council
Scarred Member voiced by: Yoshio Kawai (JP), Rick Robertson (EN, TV series), Travis Willingham (EN, The Warrior)
Gray-Haired Member voiced by: Tomohisa Aso (JP), Roger Jones (EN)
Bespectacled Member voiced by: Tetsu Inada (JP), Christopher Sabat (EN)
The rulers of Second Earth and the leaders of humanity’s war against the Blue.- Expy: Of SEELE, as an Omniscient Council of Vagueness that leads humanity against an otherworldly menace while having their own malevolent plans.
- No Name Given: Besides the Chairman Victor and Lu, the other three are left unnamed.
- Omniscient Council of Vagueness: To the point of being a SEELE Expy.
Chairman Victor
Voiced by: Masaharu Sato (JP), Brice Armstrong (EN)
The man who leads the High Council, he is essentially the supreme authority of Second Earth.- Big Bad Ensemble: With the Blue for most of the series, as he leads humanity against them despite being just as malevolent, if not more so, and it is implied that he was involved in the experiments to weaponize them that made them crazy. He ceases to be a major threat once Tony kills him.
- Clasp Your Hands If You Deceive: He likes to do this. Goes well with his Scary Shiny Glasses.
- Evil Is Not a Toy: He tried to use the B-Cells for his own benefit and ignored the repeated warnings to the danger they posed, even going so far as to manipulate test data to hide just how powerful they truly were. This comes back to bite him and the rest of the High Council in the ass when the B-Cells start acting in the ways they were warned about.
- Evil Old Folks: He is the eldest looking of the council and no less of a monster for knowingly withholding the real reason for the Blue’s emergence from most of Second Earth and willing to sacrifice most of the station's population to help make him immortal.
- Expy: Of Gendo Ikari in appearance, as well as sharing the role of fighting against an otherworldly menace while actually being the human Big Bad.
- Humans Are the Real Monsters: The representation of this idea- he and his comrades seek to use human technology only for his own benefit, and it is this drive that ruined the planet and summoned the Blue.
- Scary Shiny Glasses: Sometimes, as can be seen in the picture. Goes well with his hand clasping.
- Walking Spoiler: Most of the tropes pertain to his malevolent nature.
Lu Li Chang
Voiced by: Junko Hagimori (JP), Meredith McCoy (EN)
A member of the High Council, and the only woman.- Always Identical Twins: Her identical twin, Su, is a non-Sleeper member of the Sleeper unit like Rick. Yuji and Rick are initially confused when they first meet Lu—identical twins are apparently a rarity in the resource-poor humanity of the future.
- Happy Ending Override: After barely surviving the attempted coup d’eat in the series climax, she and her sister have their sanity removed by Gaia and they are last seen crazily starting a shootout that escalates into the entire population of Second Earth going mad and gunning down Miyagi, seemingly killing them all and blowing up the station.
- High-Heel–Face Turn: She is the only one of the five to survive Tony’s attack, and the only one to express remorse with what she did.
- The Smurfette Principle: She is the only woman among the five council members.
- Token Good Teammate: She is often seen disagreeing with Victor’s tyranny, and is the only one to stand up to him.
The Blue
- Alien Blood: They initially have red blood, but the new breed that shows up towards the end of the series bleeds purple.
- Atrocious Arthropods: The Blue are insect and bug-like creatures created to wipe out humanity on behalf of Gaia.
- Big Bad Ensemble: They are the main enemies of the series, as they seek to wipe out humanity, but Chairman Victor and his planet-ruining dictatorship are what they are trying to overthrow. After Tony’s death, they form one with new leader Seno Miyagi.
- Big Creepy-Crawlies: They resemble giant bugs.
- Depopulation Bomb: Gaia created them in part to combat human overpopulation.
- Evil Is Not a Toy: While not exactly evil, it is hinted that they were originally not as aggressive towards humans, but that the experiments by humans to weaponize them turned them against humanity as a whole.
- Final Boss: The Ultimate Blue serves as the last Blue Yuji fights.
- Gaia's Vengeance: The Blue were created by Gaia to destroy the human race.
- Hive Mind: They are all controlled by Gaia.
Progenitor of the Blue (Spoilers)
Gaia
The embodiment of the Earth itself which created the Blue.- Big Good: She is trying to save the planet from human destruction, particularly Victor.
- The Extremist Was Right: She created the Blue and caused untold destruction to human civilization... which was killing the planet. The Blue have since restored balance to the world.
- Gaia's Vengeance: The planet isn't too happy with humanity’s destruction, and so created the Blue to fight against them.
- Hero Antagonist: She created the Blue to save the planet, rather than out of malice.
- Not Evil, Just Misunderstood: In the ending it is heavily implied once Yuji makes contact with her that what she was after was not the elimination of humanity like what Tony stated, but rather her own rebirth. To cull life in order to allow new life to take its place.
- Walking Spoiler: She doesn’t actually appear until the last episode, which reveals the truth behind the Blue.
