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- Ace Pilot: Considered one.
- Attractive Bent-Gender: In the OVA.
- Bad Liar: His attempt at lying to Fleur was laughable.
- Badass Adorable: Runs in the family.
- Broken Ace: Kicks himself for not being strong enough to save Naru. And he's not taking it well being the owner of the Quartz Gun.
- Childhood Friends: With Naru.
- Elemental Punch: The Nirvash's hands can retract, revealing tasers which add power to its punches.
- Exotic Eye Designs: Purple iris with a red ring, like his mother. They grant him the ability to see beyond the visual spectrum; specifically, the ability to see trapar.
- Falling into the Cockpit
- Fantastic Racism: The victim of it, especially after his hair turns colors.
- Generation Xerox: Just like his father, Ao begins the series living alone with his grandfather. His mother vanished when he was young, just like Renton's older sister Diane* , and they're both outsiders in their respective hometowns.
- Half-Human Hybrid: Half-human, half-Coralian. The latter seems to be the dominant side as far as physical characteristics are concerned.
- Heroic B.S.O.D.: Goes through one in episode 10, but gets over it before the end of the episode.
- Heroic Lineage: Piloting seems to be a skill he inherited from his parents. His ability to "see the wind" is inherited from his mother.
- Heroic Self-Deprecation: Goes through this sometimes.
- I Thought Everyone Could Do That: His ability to "see the wind", which is actually the ability to see trapar. He's surprised to learn other people can't see it, and it becomes a problem when he's in space (where there is close to no trapar).
- Instant Expert: Ao learned to pilot an FP at an improbably young age (Gazelle even comments on it), and picks up IFO piloting on the fly (literally). Having inherited his mother's ability to see trapar, he can ride the wind with far more skill than any human could ever manage. Subverted later on; though Ao is a decent pilot, that represents the whole of his experience in the matter. The more technical aspects of the Nirvash elude him. It takes him a while to figure out how to deploy the weapons (other than the head-mounted machine guns), and Fleur has to teach him how to use the radio. Fleur won't let him live this down. When she gets stuck at his house during a lockdown, she claims he wouldn't have been able to answer the phone without her.
- Involuntary Time Travel: End of the series. He gets out of it.
- Kid from the Future: Inversion; due to Time Travel, Eureka runs into Ao before she gives birth to him. To some extent he is also a literal example.
- Kid Hero: Ao is only 13.
- Lightning Bruiser: The Nirvash doesn't have much long-range firepower, but it is very fast and can do a lot of damage up close.
- Like Brother and Sister: Feels this way about Naru.
- Like Parent, Like Child: Ao inherited traits from both of his parents.
- Like Renton, he is upfront and determined, and his unwillingness to give up; also like his father, Ao is shy around girls, but to lesser extent than Renton had been. According to Eureka, Ao is just as honest as Renton is.
- Like Eureka, he is blunt but a bit weary around certain people and suffers from identity crisis, although to less extent than Eureka did.
- Locked into Strangeness: His hair is brown until he activates the Nirvash, which changes it to turquoise.
- Meaningful Name: "Fukai ao" translates to "deep blue".
- My God, What Have I Done?: When he inadvertently alters history to prevent the formation of Team Goldilocks. He thinks they were actually Ret Goned but is relieved to find that wasn't the case.
- Nice Guy: Ao is a brave, modest, and empathetic boy who is willing to do anything to protect his friends and family.
- Not So Different: With Truth in the respect that both are a Half-Human Hybrid.
- Oblivious to Love
- Oedipus Complex: There are shades of this throughout the series.
- Only Sane Man: At times.
- Paradox Person: End of series.
- Parental Abandonment: Renton couldn't follow, for whatever reason, and Eureka disappeared when he was two. Ao at least acknowledges his father's absence, and plans to "give him a good beating" when he meets him. The events of episode 13 suggest Eureka never told him about Renton, given he doesn't even know his father's name until that point.
- Prior to the start of the series, Ao had assumed that his father abandoned him and his mother.
- Psychic Dreams for Everyone: Episode 7, though that was arguably a result of Truth, not any innate ability of Ao.
- Purple Eyes
- Raised by Grandparents: Dr. Toshio Fukai is his honorary (and maybe even legal) grandfather, after presumably adopting Eureka.
- Ret Gone: Possibly; while Ao himself still exists, he may have created a world where he was never born.
- Ripple Effect-Proof Memory: He can remember changes in the timeline, presumably because he caused them by firing his Wave Motion Gun.
- Secret Legacy
- She Is Not My Girlfriend: To Naru. It even comes up when he's not around. When Elena calls her such in episode 22, Fleur pops up on the video link just to say that Naru's not his girlfriend.
- Strong Family Resemblance: He looks a lot like his mother (if you made her male), with a bit of Renton thrown in (which is more apparent when he had brown hair). This is particularly noticeable in the OVA, where Elena and Fleur force him to dress like his mother (specifically the outfit she wore in the previous series) for over half the episode.
- Tomato in the Mirror: "Am I really an alien?" He doesn't take it that badly, however.
- Unskilled, but Strong: He hasn't been formally trained, but he's a top-notch pilot regardless.
- Wholesome Crossdresser: He's forced to crossdress as his mother, Eureka, in the OVA. He possesses a startling resemblance to her when dressed up this way and inadvertently shoots to the top of the idol charts without even trying to act like a girl.
- Wide-Eyed Idealist: Which causes him to clash with the rest of Generation Bleu.
- Winged Humanoid: Ao ponders if he can do this in episode 16, since his mother can and he has her blood. It doesn't happen
- You Gotta Have Blue Hair: Turquoise, in this case. Though it changes to this color only after he pilots the Nirvash for the first time.
Voiced by: Kanoko Miyamoto (Japanese), Lindsay Seidel (English)Ao's childhood friend, a daughter of one of the island's prominent families. She was one of the survivors of the first Scub Burst that happened soon after Eureka appeared on the island, and which killed her mother and left her an Ill Girl. All this has earned Eureka and Ao the hatred of her father. As of episode 14 she pilots Eureka's Nirvash typeZERO spec2.
- Adaptational Heroism: She actually does make a Heel–Face Turn in the manga, joining Ao against Truth and becoming good friends with Fleur and Elena.
- Bait the Dog: In Episode 22, it looks like she's making a Heel–Face Turn. Episode 23 comes around...nnnnope!
- Bare Your Midriff: Her top is rather short. She gets a gown to replace it in episode 14.
- Big Damn Heroes: She uses the Scub to protect Ao from Truth, teleporting him to Okinawa.
- Childhood Friend Romance: What she's aiming for with Ao.
- Childhood Friends: With Ao.
- Decoy Protagonist: The opening makes her look like a main character. She gets downgraded considerably by episode 5, when the island ceases to be the primary setting. Even when she regains some importance later, her appearances are erratic at best.
- Does Not Like Shoes: Once she joins the Truth and becomes a sort of messianic figure in question to the Scubs, she ditches shoes completely and goes barefoot everywhere. This is never really pointed out, not even by her own parents. Somewhat justified in that as an Okinawan, it's not that unusual to be so casual about going barefoot - similar to Hawai'i. That, or she's just become a Barefoot Sage. Episode 25 has her barefoot on the beach as a little kid, so it's more than likely just the former at work, and she's decided not to bother with shoes.
- Enigmatic Minion: Amazingly, Naru becomes this to Truth in a somewhat High-Heel–Face Turn manner, in which everything she does benefits Ao.
- Expy: To Anemone. She has an illness, a Gulliver-esque pet, and she pilots the other Nirvash for the antagonists.
- Evil Costume Switch: Of sorts.
- Evil Is Not a Toy: She tries to merge Truth with the Scub to use his power to further her agenda. It doesn't seem to occur to her that he's a goddamn psychopath who's been actively trying to destroy it for pretty much the entire series. This goes about as well as you'd expect.
- Face–Heel Turn: Though she still believes she's doing the right thing, which pushes it closer to Well-Intentioned Extremist.
- Flight: Only in a dream sequence, though. Episode 22 implies that she could fly under the right conditions (namely, a trapar-rich atmosphere) but can't for the moment.
- Forehead of Doom: Because of the way her hair naturally parts to the sides, Naru has an incredibly prominent forehead.
- Hair Color Dissonance: Starting from episode 14 her hair begins looking purplish.
- Hair Decorations: Episode 14 onward, though it isn't until episode 22 that they're actually confirmed as such (Ao thought they were part of her).
- Hidden Agenda Villain: It takes some time before she reveals her true motivation.
- Green Thumb: After being absorbed into the Scub in episode 12 and seeing the origin of the Scub, she gains the ability to control both Scub and regular coral, with which the Scub merged to survived.
- I Owe You My Life: She goes with Truth is because she believes he was the giant that rescued her from the Scub Burst. Her personal flashbacks seem to be a slight example of Self-Serving Memory (or Truth's manipulation), since a non-POV flashback of the event is much more vague.
- Ill Girl: The Scub Burst left her in need of periodic oxygen therapy, and she always carries a portable inhalator with her. Later it turns out that trapar rich air is much more effective.
- Instant Expert: She is suddenly able to fly an IFO in episode 14. There's no evidence to suggest she's ever driven anything in her life, given how Ao's ability to fly a FP is explicitly treated as abnormal. This may be explained by her Scub Coral infection and the Nirvash being alive, which together might let her fly it without the needed skill.
- Magic Skirt: Her gown after episode 14. Given how wide it is at the base, so much as a gust should send it flying up, but it stays down. Good thing, too, since one of her appearances in Ao's dreams suggests she isn't wearing anything beneath it.
- Master of the Mixed Message: She gets mad at Ao for thinking she's in love with Truth. Because it's not like she spent more than half the series following him around or anything. Then, in episode 23, after last episode set up what looked like a Heel–Face Turn, she does a complete 180, attacks all of Team Pied Piper because she doesn't think they can win, then runs off with Truth again.
- Missing Mom: Died in the Scub Burst which left Naru ill.
- Moral Myopia: In episode 12, she thanks Truth for his kindness, and shortly after the camera cuts to the rubble of the trapar mine he destroyed and the dead bodies of the workers.
- Portal Network: She can teleport herself and other objects from one Scub to another.
- Psychic Dreams for Everyone: She can see Ao's battles as they happen if she passes out or faints.
- Psychic Powers: She's a bit of a seer, and often sees Ao's battles in her dreams. By Episode 22, she can sense Ao fighting Truth in real time and uses it to save him.
- Touched by Vorlons: There's Scub Coral growing inside her, presumably due to being caught in the Scub Burst ten years ago. X-rays show it's covered most of her major organs by episode 14.
- Transhuman Treachery: To an extent. She is willing to share.
- Well-Intentioned Extremist: Naru is actually trying to improve humanity by ensuring they have symbiosis with the Scub Coral. She simply isn't bothering to ask if that's what people want, much like the Scub did when they arrived in the proper timeline, and they at least had the excuse of being entirely ignorant of humanity's resistance.
- Wild Card
Generation BleuGeneration Bleu is a multinational organization funded by the UN to deal with Scub Bursts and the Secrets which appear with them. Though UN subordinates on paper, they operate as mercenaries in practice, offering their services for a price.
Team Pied PiperOne of the Generation Bleu rapid response teams. They operate from the Triton.
Voiced by: Tetsuo Goto (Japanese), John Swasey (English)Triton's owner-captain and the team leader. A very tall and powerful man in his forties, he's an arguably both a Reasonable Authority Figure and a Bunny-Ears Lawyer, being a skilled leader and sly negotiator, but also highly eccentric, like, actually, most of his team.
- The Atoner: The reason he joined Generation Bleu was to repent for his sins when he was a soldier.
- Badass Mustache: He has a truly epic handlebar.
- Big Good: He has this role after episode 20, since just about everyone else higher up than him is dead, turned traitor, or abandoned ship.
- The Big Guy: Generally two heads taller than most of the Iwato Jima's grown men.
- Bunny-Ears Lawyer: He's a very competent leader, but he's also highly unconventional and unpredictable, and periodically has a really weird moments. Like when he refused to pick up a phone, justifying it by the fact that his coffee mug is too full.
- Dark and Troubled Past: He was a soldier during a Balkan war that resulted in the death of his family and the dissolution of his own country. Previous to that, his soldiering is how he knows Eureka; he was part of an apparently multinational team of soldiers to help Eureka stop a Secret.
- Large and in Charge
- Lantern Jaw of Justice
- Papa Wolf: In his own words, "I won't let children die." Letting them pilot IFOs is a necessary evil, since adults can't, but if push comes to shove he's willing to give his own life to protect them.
- Refusal of the Call: He was offered a position in Generation Bleu right after the disappearance of Eureka, but turned it down since he had troubles in his own country to deal with. Thanks to the events noted above, he eventually comes to accept the offer.
- Scary Shiny Glasses: As a negotiation technique.
- Team Dad
second-in-command, being an Only Sane Woman in a team of Bunny Ears Lawyers. Sometimes they push her too hard.
- Aggressive Negotiations: She's willing to pull out a gun if she has to make a deal.
- Dark and Troubled Past: She was a member of an American PR company that is the mother company of Generation Bleu. During a civil war in the Balkan Peninsula she and the company faked claims of genocide so that other countries wouldn't intervene in the conflict - though Rebecka says there was no good or evil in that conflict. The result led to the dissolution of Ivica's home country.
- Drill Sergeant Nasty: She's a bit of a martinet, and prefers simpler and harsher decisions in difficult situations.
- Dude, Where's My Respect?: She always gets saddled with whatever task the other team members don't want to do.
- Fiery Redhead: When she gets pushed too far.
- Improbable Age: Rebecka seems to be in her late twenties or early thirties at best, which is probably too young for her job.
- Only Sane Woman: And exasperated with the insanity that surrounds her.
- Screw the Rules, I'm Doing What's Right!: Often has to bend the rules in the face of bureaucrats trying to manipulate life-or-death situations for their own benefits. This culminates in her cutting ties with Big Blue World in episode 20 to help Team Pied Piper.
IFO pilots, an eccentric Otaku girl who is a practically One of Us. However, there are hints that she is more than she seems. Pilots the RA304 Kyrie, and later takes the RA302 Credo. In episode 21, it's revealed that her real name is Ellen Brooks, and she's actually from 1981, having been brought forward by Eureka to save her life.
- Ambiguously Brown: It's eventually explained that she was brought to the future from a Scub Burst in the Caribbean Sea.
- Berserk Button:
- She starts freaking out when Eureka's around, to the point where she charges after Eureka when she tries to return home. This is because Eureka took her from her own timeline to save her. In doing so, Elena saw images of Eureka's world and wanted to go there.
- She also freaks out in episode 18 when Ao leaves. This is because she believes Ao can get her back home.
- Beware the Silly Ones: She outright admits to murdering Miller Joe in episode 18.
- Bunny-Ears Lawyer: When she was temporarily arrested by the Okinawan Defense Forces, Rebecka finds her doing karaoke dressed as Miku Hatsune.
- She shot a missile by Fleur just to make her squeal uncharacteristically.
- Chekhov's Skill: Her ability with costuming and makeup.
- Child Soldiers: Like every other IFO pilot.
- Conveniently an Orphan: Episode 11 shows that she was raised in a facility that was researching children who could pilot IFOs. But see Mysterious Past.
- Cosplay Otaku Girl: She dresses up as a Captain Ersatz of Miku Hatsune.
- Dark-Skinned Redhead: Pink hair.
- Dead Person Impersonation: There is an Elena Peoples, but she's a little girl who died during a Scub Burst. This Elena is just using the name. Then there's her impersonation of Miller Joe, whom she killed.
- Double Agent:
- By impersonating Miller Joe she has been feeding data to the Americans. The problem is that she's feeding correct data, and seems to be doing it on her own initiative rather than Generation Bleu's. She gave it up not long after it was revealed, but it was going on for several months at least.
- Evil Costume Switch: Puts on a mask when she defects to the Allied Forces. Lampshaded by Harlequin.
- Gatling Good: Kyrie has two of them.
- Grasp the Sun: A scene in episode 18 has her doing this underwater. It turns out she's in Fleur's bathtub.
- Heel–Face Revolving Door: Due to thinking she's an outsider in this world she doesn't feel any strong attachment to any side and thus switches sides easily, like in episode 20, when she offers to defect to the Americans. Ao manages to calm her down and get her back on his side.
- Hidden Depths: "Elena Peoples" is a false identity she took from another person. It's implied she takes on other identities because she doesn't know who she really is. She also has some sort of association with Eureka. It isn't amicable... at least, not anymore.
- I Just Want to Be Special: Suggested in episode 21. She's not actually from the original timeline, and it's hinted that she knows this, but having seen a world where a couple carved their names on the moon, she desperately wanted to be a part of it.
- Idol Singer: Good enough to take over for an actual one with no one noticing for months.
- Macross Missile Massacre: For when Gatling Good is not good enough.
- Master of Disguise: Has been impersonating Miller Joe, who was a spy for the Americans before Elena killed her. The disguise isn't perfect, though; upon realizing that something seems amiss, they quickly identify a slight vocal difference, and her facial structure isn't close enough to fool recognition software.
- Mighty Glacier: Kyrie is a fire support platform that can unleash a ridiculous volume of fire, but is most effective when it isn't moving.
- Ms. Fanservice: In episode 17, she and Fleur have to wear revealing outfits for a photo shoot. Fleur is embarrassed, but Elena just goes with it. And that's not even getting into the numerous times she's been seen in the shower.
- Mysterious Past: Episode 11 raises a ton of questions about her origins, which even she is apparently unclear about. She reveals in episode 19 that she is from the original timeline, and that Eureka brought her to this one for some reason. Eureka reveals the truth in episode 21; while she saw images of the original timeline, she is not from it. Eureka picked her up in a Scub Burst and dropped her back off forty years later to save her.
- Occidental Otaku: According to Newtype magazine, she's American. That's her cover story, at any rate. She was brought to the future because of a Scub Burst in the Caribbean Sea, so she presumably comes from there.
- Otaku Surrogate: Half of what she says and does seems to be anime references. She even oversees the script for Pied Piper's licensed anime! Also Deconstructed. Elena says she doesn't even like manga that much, she just finds that her life is ''a lot'' like one.
- Purple Eyes
- Red Herring: There were a lot of hints that she was from the original series timeline. There was even a potential explanation with the reveal that Ao may have a sister somewhere. She's not related to Ao, nor is she from the original series timeline; she just caught a glimpse of it while time traveling.
- Shipper on Deck: In episode 8, she ships Ao and Fleur to an exaggerated extent. When Ao takes off in anger and Fleur chases after him, she assumes they're eloping.
- Unusual Ears: Her helmet has cat ears.
- You Gotta Have Blue Hair: She has pink hair.
- Zettai Ryouiki
Voiced by: Ayaka Ohashi (Japanese), Sainty Reid (English)Pied Piper's second IFO pilot, a cheerful blonde girl, the only daughter of the Generation Bleu's head, Christophe Blanc. She sees herself as Ao's rival. Pilots the RA164 Alleluia.
- The Ace: She's an excellent pilot and a popular idol in her own right, and knows it.
- Enemy Scan: Alleluia can scan the Secrets, determining their detection radius, weak points, etc.
- Fragile Speedster: Alleluia is very quick and agile, but its armor isn't worth a damn, as it was designed primarily as a EAW/EW platform. It plays the role of spotter for Kyrie.
- Green-Eyed Monster: She doesn't like the effect Eureka has on Ao.
- Improbable Age: Becomes the president of Generation Bleu after her father sacrifices himself.
- Missing Mom: She died in a car accident. Specifically, both she and Fleur were in that accident, and the doctors could only save one by taking organs from the other. Fleur was the recipient, apparently on her father's suggestion.
- The Rival: Sees herself as such to Ao. That said, she is pretty friendly to him, especially when they start to bond over their mutual dislike of their fathers.
- Scars Are Forever: Still has her scar from the operation that saved her life and killed her mom.
- Self-Made Orphan: She appears to kill her father in episode 19. Except she hasn't really killed him, but instead shot Truth, who was impersonating him. He blew his cover when he tried to convince her to abandon her friends. The real Christophe is not so inattentive that he would think Fleur capable of such an action.
- Survivor Guilt: She hates the fact that her mother's organs were used to save her life. She took her piloting job precisely because it's something of a slap in the face to that (she believes her father made the choice, hence she's getting back at him for it).
- Tsundere: Toward Ao.
- Zettai Ryouiki: Grade A in uniform, Grade B at home.
Team GoldilocksAnother Generation Bleu rapid response team. They operate from the Medon, a ship identical to the Triton in all but color. The team (though not its members) ceases to exist in episode 16, after AO wipes out the Secret army with his new Wave Motion Gun and as a consequence prevents the Norwegian Scub Coral from ever appearing. This in turn causes the McCaffrey family to never move to the Coral Plant established there, so they continue to live as ordinary bakers. Bruno's fate is not elaborated upon, while Maggie instead became an IFO pilot for the Americans.
Voiced by: Yu Shimaka (Japanese), David Wald (English)Team leader and captain of the Medon.
- The Big Guy: He's chubby in comparison to Ivica, but still quite big.
- Heroic Sacrifice: Flies the Medon into the Secret to stop it temporarily, allowing Team Pied Piper to rescue his pilots.
- Sacrificial Lion: The Medon is destroyed, and him with it, in the episode following his first appearance.
- Team Dad: He tries to encourage Ao not to join Pied Piper, reasoning that those he cares for would be saddened by it. When Ao stops by his apartment later, he's shown to be very dedicated to his work, almost obsessively so.
- We Hardly Knew Ye
- What Happened to the Mouse?: The fate of Bruno in this new timeline is never revealed.
- What the Hell, Hero?: A non-verbal one. When Ao is looking around Bruno's apartment as it's being cleaned out, he finds a map with reports of various Scub incidents pinned to it. The report pertaining to Iwato Jima, and thus him, is quite vocal about why it was a terrible mistake to ever let him fight in the first place, with "Never let children die!!" written on it by hand. Bruno didn't actually write the report, but the handwritten note is his.
Voiced by: Nao Touyama (Japanese), Kristi Kang (English)Pilots the RA121 Gloria.
Voiced by: Ayumi Fujimura (Japanese), Morgan Garrett (English)Pilots the RA302 Credo. After the Cosmic Retcon, she pilots an Eisenhower.
- BFG: Her IFO is a heavy artillery frame.
- Child Soldiers
- Face–Heel Turn: Sort of; due to a Cosmic Retcon she ends up working for the Americans.
- Heterosexual Life-Partners: Her best friend is Maeve McCaffrey, another IFO pilot for Goldilocks.
- In Spite of a Nail: Not being from the same country as Chloe and Maev, she's still a pilot in a new timeline, except she works for the Americans.
- She still winds up encountering and befriending them in the final timeline despite being a foreign soldier.
- Past-Life Memories: Of a sort. When she sits in the Credo in the new timeline, she sees flashes of her teammates in the old one.
- Trigger Happy: She was a little too eager to start shooting up Generation Bleu's base...
Voiced by: Ayu Matsura (Japanese), Felecia Angelle (English)Pilots the RA169 Requiem.
- Big Eater: She is shown eating a ridiculously huge plate of ice cream, and had no intention of sharing it.
- Character Development: Gets a bit in episode 14 about why she fights.
- Child Soldiers
- Enemy Scan: Like Fleur, her role is that of electronic warfare.
- Improbable Age: She's 11. Even with the Child Soldiers thing, that seems to be pushing it.
- Napoleon Complex: She doesn't like people drawing attention to her size.
- Third-Person Person
Team HarlequinThe team on Orbital Fortress Poseidon, Generation Bleu's Space Station. They guard the quartz collected by Generation Bleu's pilots. The Poseidon is destroyed by Truth, but they manage to escape its destruction in their ship "Great Proteus".
Voiced by: Yūko Katō (Japanese), Lydia Mackay (English)
- Batman Gambit: It's implied she requested Pied Piper's help specifically so she could get Ao as part of her team (out of scientific curiosity). Though she denies it, it's clear she knew coming in pretty much exactly how Ao would react to being in space.
- Fake Defector: Her team the Allied Forces against Pied Piper. She later explains that she did it to buy time for them.
- Team Mom: She insists Ao call her "Mom".
Voiced by: Fūka Haruna (Japanese), Alison Viktorin (English)Pilots the RA122EB Sanctus.
- Beam Spam: Seems to be his IFO's specialty.
Voiced by: Kōsuke Hatakeyama (Japanese), Corey Cleary-Stoner (English)Pilots the RA122E Benedictus
OthersVarious support staff and management.
Voiced by: Akio Nojima (Japanese), Charlie Campbell (English)The lead mechanic for Generation Bleu. He and his team maintain the IFOs.
- Badass Grandpa: The man is not young by any measure, but he still dove onto the Nirvash while it was in motion (though admittedly, it wasn't moving all that fast) in order to manually shut it down before Ao could leave without authorization.
- Gadgeteer Genius: In a somewhat subdued, industrial way.
- Mr. Fixit
- Only Sane Man: At times.
- Screw the Rules, I'm Doing What's Right!: Upon seeing that Elena and Fleur have unwittingly activated the Third Engines on their IFOs, he lets them leave to rescue Ao without any orders.
Voiced by: Rokuro Naya (Japanese, series), Masashi Ebara (Japanese, Lord Don't Slow Me Down), Chuck Huber (English)The head of Generation Bleu and Fleur's father.
- Back from the Dead: His Heroic Sacrifice was Retconned at some point or another during Ao's travels through time.
- Benevolent Boss: Ostensibly. He gave Gazelle and his friends a job on the grounds that they deserved a chance. The fact that they had discovered classified information about the Scub Coral at best seemed to amuse him slightly, while Rebecka treated it as a severe-enough breach to potentially silence them for. He has also shown a consistent desire to keep his pilots happy, such as sending Chloe a box of doughnuts while she was recovering. However, this seems to be something of a front for more manipulative behavior. He let Ao off the hook for a major breach in protocol, only to have him tailed by Gazelle and his friends in such a way that he'd know he was being watched. Both Fleur and Elena recognize that his kindly demeanor isn't exactly on the level.
- In the end though, he was still this trope, ensuring that the remaining members were taken care of when things went pear-shaped.
- Bunny-Ears Lawyer: In the middle of a worldwide crisis, he asks Ivica to pick him up some coffee beans from South America because his US-made coffee tastes like crap.
- Crazy-Prepared: See below.
- Heroic Sacrifice: He locks himself with Truth in Generation Bleu's Quartz silo, then releases the Quartz which he booby-traped to crush Truth, having deduced that Truth is a Secret and that the resulting reaction, at the very least, would cause him some harm.
- Guile Hero: As one example, in episode 8 he manipulates the world and pressures America into allowing a mission in Faisal Arabia.
- Papa Wolf: Do you doubt he's one? Ask Truth. Once he digs his way out of the giant mass of Quartz Christophe crushed him with.
- Reasonable Authority Figure
- Scary Shiny Glasses: At times.
- Senseless Sacrifice: Unfortunately, his Heroic Sacrifice doesn't work. It just forced Truth to possess an LFO instead.
- Take Up My Sword: He passes his position to Fleur upon his death, his reasoning being that he has literally nothing else he could give her after taking so much.
- Team Dad: His general appearance.
- Thanatos Gambit: He prearranged a deal with the Japanese and the Secrets to give Generation Bleu a new base of operation and national sponsorship in the event that everything went south.
Voiced by: Hidenobu Kiuchi (Japanese), Tyson Rinehart (English)An AI that acts as a Mission Control and support for Generation Bleu's Rapid Response Teams. Very much a Deadpan Snarker, he loves commenting on everything that happens.
- Amusing Injuries: He gets his nose cut off in episode 11, only to reappear with it taped back on less than a minute later.
- Artificial Intelligence
- Berserk Button: Getting interrupted is one thing. He puts up with that. Talking over him is another. This is signified by his circle eye changing into a triangle as a crude angry face.
- Demonic Possession: Of sorts. Han links a Secret to Georg in an effort to communicate, which due to synchronization between all the Generation Blue Georgs leads to it being able to communicate through all of them when it wishes.
- Deadpan Snarker: He doesn't have much in the way of emotional range.
- Have You Tried Rebooting?: Ultimately, they deal with this by rolling back Georg to an earlier version, since they'd look even worse if it were discovered they were on speaking terms with the Secrets. Secret!Georg still exists as an independent program. Subverted, though. Since Georg was uninstalled but never reinstalled, while Secret!Georg survived in certain protected systems, the latter has effectively taken complete control.
- Mr. Exposition: When he gets the chance, at least.
- Nice Hat: His avatar is a simple face with a top hat.
- Servile Snarker: He has his moments.
- Split Personality: Ao calls it this.
Voiced by: Ikuya Sawaki (Japanese), Kent Williams (English)The liaison between Generation Bleu and its parent company, Big Blue World. It's his job to keep Christophe in line with the company's goals, though his success in this matter tends to vary. He also keeps an eye on some of its more valuable assets. He temporarily takes over leadership of Team Goldilocks after Bruno's demise, until the team is erased from history and that never happened.
- Commander Contrarian: Marginally. He's shown at multiple points not to approve of Christophe's methods, mainly because he usually doesn't act in the company's best interests.
- Know When to Fold 'Em: He left Generation Bleu along with the sponsors since he was there for them.
- No MacGuffin, No Winner: He'd rather sacrifice the entire headquarters than let an enemy get their hands on the item in the basement.
- Troubled Fetal Position: When the Coral Carriers suddenly get sick after high trapar exposure, he balls up, talking to himself about how it wasn't supposed to happen.
Iwato Jima's residentsThe people of the Iwato Jima, the Okinawan island where Eureka landed and given birth to Ao. Because the Scub Bursts started to happen soon after, the island's inhabitants, with a few notable exceptions, blamed it all on her and Ao. In addition, they also vented their frustration at Okinawa's half-assed independence on them.
Voiced by: Masafumi Kimura (Japanese), Phil Parsons (English)Naru's father and one of the community leaders. His wife died in the first Scub Burst that also injured Naru, and he has since hated Ao and Eureka with a passion. There's hints that he was the one who betrayed Eureka to the Americans.
- Freudian Excuse: He at least has some flimsy excuse for his behavior.
- It's Personal
- Jerkass: There's a very slight hint of him having a heart of gold somewhere, though. Despite his clear disapproval of their friendship, he let Naru go see Ao in episode 4 with no apparent protest. The fact that Ao has saved the island twice by this point might have motivated that change in attitude.
- Living with the Villain: Naru comes back to live with her family in episode 21, leading to very uncomfortable silences all-around.
- Think of the Children!: This is how his hatred of Ao and Eureka manifests. Since the Scub Burst killed his wife and left his daughter quite ill, he believes Ao will draw the island's children into the same type of conflict that the adults had to deal with ten years ago. He even tries to use this excuse with Fukai (Fukai rightfully counters that Ao is as much a child of the island as the rest are).
Voiced by: Naomi Kasumi (Japanese), Mark Stoddard (English)Gazelle's father, a famous folk singer and sanshin player, also one of the island's leaders. A very traditional man, he seems to be against Ao in no small part due to racism.
- Alliterative Name: The first letters of his first and last name begin with "K".
- Breaking Speech: His "apology" to Ao turns into this.
- Hero with Bad Publicity: How he thinks of himself after the Scub Burst is handled. With the Allied Forces capitalizing on it as a new trapar mine and bringing prosperity to the island, he's the only one still dedicated to the cause of independence. Any attempt to act on it would be treated negatively.
- Pick on Someone Your Own Size: Since we don't know how he treated Eureka on the past, we instead get his present-self who targets children to get independence instead of actually doing something about it. He's called on it more than once.
- Politically Incorrect Villain: As if his attitude toward Ao weren't bad enough, he also gets on Naru's case after the coral infections begin spreading. Understandably, though, he's less willing to mess with the girl who has what amounts to an army and magic powers.
- Spell My Name with an "S": His surname, 金城, can be read both as Kinjou (as on the official site) and as Kaneshiro (like on posters).
- Taking Up the Mantle: Wants Gazelle to do this. Gazelle dismisses it; his father never felt him capable of it before, only to suddenly ask now.
Voiced by: Tetsuo Komura (Japanese), Brian Mathis (English)Pippo's father and an officer in the Okinawan Self-Defense Forces. He's Iwato Jima's militia commander and seems to be somewhat less of a jerk and more politically motivated, as he wants to trade Ao for full Okinawan independence.
- The Big Guy: Third after his own son and Ivica.
- My Country, Right or Wrong: He doesn't hold any ill will toward Ao, and authorizes his return to the island later on. In that same episode, though, he immediately goes back on that deal when the Japanese pressure Okinawa into turning Ao over as a murder suspect.
- Punch-Clock Villain
- Utopia Justifies the Means: If the Okinawan independence requires harassing a thirteen year old boy, so be it.
Voiced by: Takuya Kirimoto (Japanese), Brandon Potter (English)Kazuyuki's son and the head of a small courier company (no questions asked) that he runs on Iwato Jima. He's estranged from his father and actually regrets bullying Ao earlier on his instigation. A shrewd and cunning smuggler, it's during a job for the JAF that he ends up with the key to the Nirvash, and from there brings Ao into the conflict. He and his crew stow away and follow Ao to Switzerland, where he forces the president of Generation Blue to hire them as investigators, and uses that position to try to figure what's going on with the world. Born as Jirou Kinjou.
- Batman Gambit: Does this to Fleur in Episode 18 so she would go rescue Ao.
- Calling the Old Man Out
- Childhood Friends: With Pippo.
- Do Not Call Me "Paul": He's become so fed-up with his father that he completely rejected his birth name. His Swiss passport (after he becomes a Generation Bleu agent) still calls him Jirou Regazzoni.
- Drives Like Crazy: "Cars are so last century!"
- Heel–Face Turn: Regrets bullying Ao in the past and basically becomes his ally after Ao pilots the Nirvash.
- Hidden Depths: He acts apathetic and sloppy, but he's got a sharp mind and has more figured out about what's really going on than most of the rest of the cast at any given point (though due to a general lack of information and/or clarity, still gets surprised often).
- In the Name of the Moon: His speech to Kazuyuki and Teruhiko when he and his friends rescue Ao from them.
- Jerk with a Heart of Gold: His first on-screen meeting with Ao has the two fighting over his recent accident, Gazelle having swerved to avoid Ao on the beach during an emergency landing. Later on, he's nothing but even-handed with Ao.
- The Kirk
- Plucky Comic Relief: At times with Pippo and Han.
Voiced by: Keikou Sakai (Japanese), Matt Thurston (English)Teruhiko's son and Gazelle's childhood friend. A big guy who's cautious because he's been unlucky since childhood. Born as Reo Niigaki
- The Big Guy
- Born Unlucky
- Childhood Friends: With Gazelle.
- Commander Contrarian: He often serves as a voice of reason, shooting down Gazelle's crazier schemes.
- Cool Shades
- Hot Blooded Sideburns: Subverted: Pippo's anything but hotblooded.
- The McCoy: He has a very strong conviction for justice.
- Number Two: Gazelle's main assistant
- Plucky Comic Relief: At times with Gazelle and Han.
Voiced by: Yoshinori Fujita (Japanese), Anthony Bowling (English)The third in Gazelle's company, he's a skilled hacker and information gatherer. His father runs a prominent trapar mining company (which one is not specified), and his name is well-known enough that Nakamura knew of him by reputation alone. Being a multinational and multiracial, he has no stake in the political struggle around Okinawa and thus sometimes comes off as cold and indifferent.
- But Not Too Foreign: He's descendant of four nations, and is thus very cosmopolitan.
- Not in This for Your Revolution: He has no stake in the political conflict, having only signed up for the money and because he's Gazelle's friend.
- Playful Hacker
- Plucky Comic Relief: At times with Gazelle and Pippo.
- The Spock
- The Stoic
Dr. Toshio Fukai
Voiced by: Katsunosuke Hori (Japanese), R Bruce Elliott (English)Iwato Jima's physician, he was the only one of the island's elders who was against the common "let's blame everything on the blue-haired people" attitude prevalent there. He took in Eureka and hid her until she disappeared, and then adopted Ao as his grandson.
- Amplified Animal Aptitude: At times he seems far more competent than he should be. In episode 3, he tries to untie Ao while the adults aren't paying attention. He even appears to be reading in two different episodes.
- Expy: Of Gulliver.
- Evil-Detecting Dog: When Truth shows up in the form of Eureka in episode 13, he shivers uncontrollably.
- Team Pet
Voiced by: Koichi Tochika (Japanese), Duncan Brannan (English)A JSDF Military Intelligence officer hell-bent on obtaining the trapar technology for Japan. Japan, being isolated from the world community due to the whole Okinawa debacle, and lacking a Scub Coral that could be used for trapar production, lags behind the rest of the world significantly, so he is set on correcting this. Still, his junior status and over the top ways mean that he's mostly ignored even by his own side. By the end of episode 9 he begins working with Truth.
- Drowning My Sorrows: He gets sloppy drunk in episode 21 when Pied Piper's alliance with Japan effectively destroys his ambitions.
- Dude, Where's My Respect?: Well, he's a junior officer, but he's frequently questioned even by his own subordinates.
- Evil Is Not a Toy: Didn't really think that whole "use a Secret as a weapon against our enemies" plan through, did you, Lt. Nakamura?
- Jerkass: His reaction to Truth wreaking havoc across Okinawa is to essentially blame them for inviting it by gaining independence.
- Large Ham: For a Japanese.
- Manipulative Bastard: Given his situation, that's basically all he can do to get to his goals.
- Truth still has him wrapped around his finger.
- Only One Name: Nakamura is presumably his last name, but it's never made clear and no one has ever referred to him by any other name. Even the official website only lists the one name. The last episode finally reveals his name is Yasumochi Nakamura.
- Patriotic Fervor: The Secret unfavorably compared him to Hitler, Napoleon, and Alexander in this regard. He ends up resigning from the military in episode 21, since they allied with Pied Piper and derailed his plans.
- Sideways Smile: In later episodes, as a consequence of working for Truth. It really isn't good for one's peace of mind.
- Smug Snake
- Teeth-Clenched Teamwork: He and Truth get along about as well as can be expected for two villains with barely any goals in common. Nakamura has even pulled a gun on him (which Truth casually bent into uselessness).
- Tempting Fate: Their soldiers will be fine! Secrets only target Scub Coral.
- Too Dumb to Live
- Well-Intentioned Extremist: As he sees himself.
- Would Hurt a Child: He tries to shoot Ao to keep him from getting to the Nirvash in episode 14. Fortunately, everyone else is appalled by his behavior and restrains him before he can get a shot off.
Major Niki Tanaka
Voiced by: Tomeyushi Hyuga (Japanese), Andrew Chandler (English)USAF officer apparently responsible for Scub phenomena observation. So far he has proved largely a neutral force, concentrating on information gathering and observations, rather than on a direct actions.
- Badass Beard: A neatly trimmed vandyke.
- Blood Knight: Seemed eager to have his IFO contingent face off against the Nirvash.
- But Not Too Foreign: Japanese-Hawaiian.
- Do-Anything Soldier: He seems to change military uniforms (from USAF to US Army, for example) as necessary, but most of the time he's dressed in USAF uniform.
- First-Name Basis: Asks Ao to call him Nick in the episode 18.
- The Handler: Of Miller Joe for some time.
- Non-Uniform Uniform: They are uniforms, but he changes them so often it's simply impossible to determine which service he really belongs to.
- Overt Operative: He doesn't even try to hide — because he doesn't need to. His official cover is "American agent".
- Reasonable Authority Figure: When he shows up to take Ao into protective custody in episode 17, he doesn't try to threaten Ao into cooperating (he did have an IFO squadron with him, but that was likely meant to keep the Chinese at bay). Instead, he gives a simple reason why Ao is better off coming with him, which is enough to get Ao to come quietly.
- Strange Bedfellows: He helped Han and Pippo to link the Secret's head with Georg. Later on, he offers to put Ao in protective custody, citing Generation Bleu's suffering reputation in the wake of the latest Secret attack.
- Wild Card: We don't know his real agenda.
- Wouldn't Hurt a Child: He pulls a gun on Ao to stop him from leaving in episode 18, but lets Ao go when Ao refuses to back down.
A scientist who published a book explaining how the current world is wrong due to interference in history by the Scub Coral and Secrets. He is variously regarded as a quack or a prophet. With Nakamura trying to spin the Secrets as the protectors of mankind, his book is becoming much more popular.
- The Cuckoolander Was Right: Most of the world regards him as a quack. He also happens to be completely right. Truth told him everything about the other world.
- Chekhov's Gunman: Mentioned as early as episode 4.
- Driven to Suicide: He committed suicide a few years prior to the story, though why is never stated.
- The Ghost: His first appearance is a picture of him in episode 12, followed by a non-speaking flashback in episode 19.
- Monster Roommate: He adopted Truth as a child. He was essentially living with a Secret.
- Posthumous Character: He's dead in the present-day.
He's actually a Secret in human form, the same Secret which fought Eureka before she vanished ten years ago. Johansen found him in the aftermath of the Okinawan Scub Burst. In episode 20, he merges with the Kanon, an LFO archetype kept in the basement of Generation Bleu, after Christophe Blanc tries to kill him with a Quartz explosion.
- Ax-Crazy: After merging with Kanon.
- Back from the Dead: One episode after he commits suicide, he's back as an Archetype on the Nirvash.
- Beam Spam: When merged with the Kanon.
- Big Bad
- But Now I Must Go: End of series.
- Came Back Strong: To the point that it's stated only another archetype can beat him now.
- The Cracker: He's a member of the "Fire Crackers", a hacking group. In fact, he's actually the entire group. He's able to hack into a missile defense satellite in episode 12. Episode 19 reveals that he's actually a technopath, hence why he's so freakishly good at it.
- Cryptic Conversation: More like Cryptic Soliloquies, since he often speaks aloud when no-one is there to listen.
- Defeat Means Friendship: Kind of.
- Desperately Looking for a Purpose in Life: And violently so, at that. Seeing the Nirvash evidently provides him with inspiration in that regard. After choosing his name, he claims to be seeking the "truth" of the world. Episode 19 reveals this is in fact the very reason behind his creation. When Eureka took the Quartz at Okinawa without killing the Secret trying to destroy it, the Secret could only reconcile its lack of purpose by merging with the Scub and taking on human form.
- Driven to Suicide: He gets better.
- 11th-Hour Ranger: Due to a Cosmic Retcon in the episode before, the last episode has him as Nirvash's Archetype, communicating with Ao like an AI.
- Evil Counterpart: Seems to consider himself one to Eureka. He may have a point, given they were both Human Aliens born with no knowledge of who they were.
- Exotic Eye Designs: His iris forms a line through his pupil.
- For the Evulz: He admits to Naru he was trying to use the Secrets and the Scub Coral to cause chaos.
- Gender Bender: One of the forms he takes is a woman. One notable aspect of this form is that it retains the exotic eyes of his default form. Gets doubly disturbing in episode 13, where he takes two female forms and shapeshifts only his head back to normal while talking. Worse still, one of these was Eureka. You can scream in agony now.
- Hand Blast: He can fire bolts of energy strong enough to blow up an armored FP or a small building. He does this with a Finger Gun at one point.
- Heel–Face Turn: After becoming an Archetype.
- Hidden Agenda Villain: Some of it seems to be him trying to find what his own agenda is. See Desperately Looking for a Purpose in Life.
- Human Alien: Similar to Eureka.
- Humanoid Abomination: Apparently, a Secret-Scub-Human hybrid.
- Human Shifting: He can take the appearance of any human at will.
- Invincible Villain: Going hand in hand with being an Outside-Context Problem, the guy is basically indestructible. He's shown to be bulletproof even when caught off-guard, can fly at speeds matching or exceeding most IFOs, can shield himself from attacks that would shred armored vehicles, and can fire energy blasts that can destroy small buildings. Even a Quartz explosion, which is supposed to kill Secrets, fails to bring him down.
- Irony: His goal in life is to discover the truth. When he finally learns it, he outright refuses to accept it.
- Laughing Mad: Especially after episode 22.
- Laser-Guided Amnesia: He actually forgot he was a Secret.
- Living Shadow: His monster form looks like one.
- Mad Eye: After merging with Kanon
- Making a Splash: He telekinetically shapes a giant hand out of water to drag the Nirvash into the depths. It didn't stop Ao for very long, but it succeeded in pulling him under regardless.
- Manipulative Bastard: Being a shapeshifter helps in this regard, but he's shown the ability to destabilize entire countries without revealing himself.
- More Teeth than the Osmond Family: After episode 20.
- Nietzsche Wannabe: Believes the world is wrong and nothing can fix it. He passed these ideas on to his adopted father, Johansen.
- No One Could Survive That!: In episode 19, Christophe crushes him with a bunch of Quartz storage tanks. Since Truth is a Secret, the two react and cause a massive explosion. He comes back in the next episode merged with an LFO archetype called Kanon.
- Oh, Crap!: Surprisingly, he's still capable of this even with all his power.
- Omnicidal Maniac: By episode 22, as a consequence of his Sanity Slippage, he plans to destroy everything.
- One-Winged Angel: His monstrous shadow-like form. His Secret form would technically count, if he ever used it in whole. In episode 20, his transformation into a Secret/LFO hybrid could also be seen as this.
- Out-Gambitted: He learns in episode 19 that, for all his attempts at manipulation, Naru has been playing him. Probably not the whole time, but presumably after episode 14.
- Outside-Context Problem: He appears with no prior build-up in episode 6, sees the Nirvash in action, announces that he was waiting for something like it, and then goes to attack Generation Bleu. He is not aligned with any of the factions, nor does he seem to have an allegiance to the Secrets. Finally, he possess superpowers in a Humongous Mecha series.
- Person of Mass Destruction
- Pet the Dog: As Naru points out, he could have killed Ao by now, were he so inclined. Truth believes that Ao has the potential to see the truth of the world, which is probably why he hasn't bothered.
- Power Glows: The jewel on his belt glows. His eyes also glow occasionally.
- Psychic Powers: He's a powerful telekinetic, able to lift cars, levitate, and moves an entire store from Phoenix to the Grand Canyon (which may have involved teleportation given how cleanly he did it). He may also be a telepath, given his ability to infiltrate almost any organization he wants. He may have put Ao through a Dream Sequence, during which he took off with Naru, which left Ao unconscious for three days. Naru later explains that Ao's consciousness was there, which implies Truth was responsible.
- Ramming Always Works: Half of his combat strategy when merged with the Kanon is to just run into everything, since his mech is indestructible.
- Ret Gone: To himself. He gets better.
- Rocket Punch: His Shapeshifter Weapon powers work this way, transforming his fists and controlling them at range.
- Sanity Slippage: He's wayyyyy gone by episode 22...
- Self-Disposing Villain: He hijacks the Quartz Gun and shoots himself with it, simply because he's tired of living in a world that he does not belong to. He's erased from existence, but the Kanon survives (albeit as a flaming wreck). And then Truth turns up as the Nirvash's Archetype in the new timeline.
- Shapeshifter Default Form: Type B. His white-haired form seen in the opening is the one he switches to when not bothering to hide his identity. Naru's vision shows that this is his true human form, having manifested as a human child when Johansen found him. His actual form is that of the humanoid Secrets.
- Shapeshifter Weapon: He can transform his hands into giant Secret hands, strong enough to wrestle an IFO.
- Technopath: Revealed to be the source of his hacking abilities in episode 19.
- Teleporters and Transporters: He's shown the ability to teleport in later episodes.
- The Sociopath: People die and things explode when he's around. This is subverted at the end of the series, where he's actually helpful.
- Tomato in the Mirror: He actually freaks out when he's told he's a Secret.
- With Great Power Comes Great Insanity: He starts out Ax-Crazy. Merging with Kanon pushed him over the edge to completely insane. Then a Cosmic Retcon happens and he gets better.
- Villainous Breakdown:
- He really cannot stand getting beaten because he's damned near indestructible. Episodes 13 and 14 are great examples of this, showing his face devolve into almost-deformed expressions of anger reminiscent of Haruhara Haruko's angry◊ face,◊ where she loses her composure so much that she seems to lose control of her body.
- He truly loses it in episode 19, when he learns he's a Secret in human form. Remember what we said about Haruko's angry face? He looks like that pretty much constantly. Which is rather satisfying in a weird way.
- Villainous B.S.O.D.: Pretty much all of the episode 19, after both Naru and the Secret head told him that he's a Secret — which he obviously is unable to remember (and accept) at all.
- You Gotta Have Blue Hair: Light blue in his Shapeshifter Default Form.
Missing Mom. 13 years before the series begins, she fell from the sky into the ocean. She was rescued by Mitsuo Arata and gave birth to Ao on Okinawa. She disappeared under mysterious circumstances in the Okinawan Scub Burst ten years ago. In the present, she appears in episode 12, except from her perspective that hasn't happened yet. She is the original pilot of the Nirvash Mark I, while her past self piloted the Nirvash typeZERO spec2.
- Adorkable: When she's not being serious, she tends to come off as this. Of particular note are her reactions to someone mentioning the Deface of the Moon in her time or Renton.
- The Ageless: Coralians never age, so Eureka is effectively a permanent teenager regardless of her real age. She still looks the same as she did in the original series, presumably several years ago to her. Still, she manages to give an impression of the older age through the longer hair and more conservative outfit.
- Came from the Sky: Eureka and the Nirvash came out from a pillar of light and the Nirvash subsequently dropped Eureka into the ocean.
- Chekhov M.I.A.: As Ao's Missing Mom, she inevitably becomes important once she reappears.
- Daddy Had a Good Reason for Abandoning You: A mother example. It ultimately came down to either abandoning Ao or letting a whole lot of people get killed (which might have included Ao regardless).
- Declaration of Protection: She says this about the world after witnessing two men suffer protecting her.
- Dye or Die: Eureka has black hair in some flashbacks, and is seen dying it in one of them.
- Fling a Light into the Future: She taught the world how to neutralize Scub Bursts, at the cost of herself. She also left the Nirvash behind, forming the basis for all IFO technology that followed.
- Heroic Sacrifice: The sentiment is there, even if she's not truly dead.
- Human Aliens: As in the previous series. Her wings are hidden but can be formed at will, and the forehead jewel is still there.
- Just One Second Out of Sync: Taking the Quartz left her stuck between dimensions/timelines. Only a few days have passed for her, and in the course of that she's gone at least forty years into the past as well thirteen years into the future (from when she first vanished).
- Knight Templar Parent: Like Renton, Eureka decided to destroy the Scub Coral after it caused their daughter's death.
- Living MacGuffin: Everyone is after her, since she taught them how to stop Scub Bursts in the first place and brought the Nirvash.
- Missing Mom: Disappeared while preventing a Scub Burst 10 years ago.
- Pregnant Badass: If push comes to shove, being six months pregnant won't stop her from doling out a much-needed beatdown.
- Spirit Advisor: She can occasionally intersect with Ao's timeline to give advice. She appears before Ao a couple times, and tries to reason with Naru in episode 14 (though Naru ignores her). Elena gets a chance to talk to her in episode 21, which was quite a surprise to Eureka herself (she expected to find Ao).
- Time Travel: The Eureka that appears in episode 12 is from before she gave birth to Ao, far enough that she's currently pregnant with Ao's older sister. She also pulled Elena from her own time period to 40 years into the future to save her.
- Winged Humanoid: Type 2; she can manifest her wings at will.
- You Can't Fight Fate: When she appears in the present, pregnant, it's a given that she'll disappear again so her previous appearance 13 years ago can occur.
Disappeared Dad and husband of Eureka. When he and Eureka were doing experiments on the disappearance of Scub Coral in their world, she and the Nirvash spec2 were taken by the Scub, leaving him behind. She came back at some point, only to leave again with the Mark 1 Nirvash sometime later. He finally shows up in episode 22, a resident of the Bad Future.
- Adorkable: Just like Eureka, he has his moments where the old Renton shows through.
- Adventurer Outfit: A cross between an Airman and Archeologist types. It's pretty much the Federation's issue traveling gear from the original, in fact.
- Badass Longcoat: He wears spiffy, black longcoat while traveling.
- Chekhov M.I.A.: In the original series, it's his dad who up and vanished, but here, he takes on the role of the missing badass father.
- Cool Shades: Wears some, even though the right lens is cracked a bit. He tosses them away when he sees the Seven Swell.
- Daddy Had a Good Reason for Abandoning You: Eureka's said he's busy fighting, both Scub Corals and Secrets. Also, had Eureka stayed with Renton, Ao would've been stillborn, just like his older sister.
- Disappeared Dad: Not his fault (thanks to Time Travel and Alternate Universes).
- Future Badass: Literally but not thematically, as there's no other version of him.
- Gadgeteer Genius: He built Ao's Nirvash, and the Nirvash specV copy he pilots in episode 22 also seems to be his (it follows the same design aesthetic).
- The Ghost: He was first mentioned by name in episode 13. He doesn't appear until episode 22, not counting the shot of his back in the second opening.
- Knight Templar Parent: He becomes obsessed with destroying the Scub Coral following the death of his daughter and often rejected any other resolution that involved protecting his son and maintaining peace with the Scub Coral altogether; he blamed the Scub Coral for Amber's death and saw it as a threat to Ao's life. He was willing to do whatever it took to protect his son even if it meant sacrificing his relationship with Eureka (who consented to this, as she too was desperate to keep Ao safe).
- Skunk Stripe: He has a patch of white hair on his forehead.
- Walking the Earth
- Weapon of Choice: Sawed-off shotgun.
- Well-Intentioned Extremist: He's actually trying to destroy the Scub, both because he feels responsible for the Scub messing up the Alternate Universe and because trapar can kill Ao.
Voiced by: NoneRenton and Eureka's deceased daughter and Ao's older sister.
- Small Role, Big Impact:
- Although she is deceased and has never been seen in the series, her death serves as the catalyst of events leading up to her parents' decision to destroy the Scub Coral, and have her brother raised in a world with no Scub Coral or trapars.
- Particularly, Amber's death had a profound effect on Renton's mental state so much so that he completely disowned his previous vow to protect the Scub Coral in order to destroy it and was willing to give up anything to achieve that goal, including his relationship with Eureka and having Ao hate him.
- Strong Family Resemblance: In the front cover of the final Eureka seven DVD, Amber was depicted as having blue hair and porcelain complexion like Eureka, and blue eyes as Renton.