However, she turns out to have a much longer history and background going back more than 700 years that parallel the creation of the current world within which the Battle Angel Alita universe is set, but was not revealed in the original manga series.
As one reviewer notes, "in a very real sense Caerula's story is also the foundation of the present...her actions in the past played an instrumental role in bringing about the state of affairs that exists in Alita's current time.
She developed a tactic known as the Eight Block Death Gate Array, a series of maneuvers designed to drive an opponent into an untenable position from which they can be killed in a final blow, which Mbadi acknowledges as inescapable once it has been executed.
This ability appears to be aided by the consumption of fresh human blood, and she can completely suck an adult male dry, leaving him a desiccated corpse in seconds.
After registering for the Z.O.T.T., Sechs transitions into the anatomically male Fizziroy body, made of cutting edge polyethylene materials, and different from his initial make as a replica of Alita.
A hacker extraordinaire, refugee from the outside world and justice, Ping Wu (ピング・ウー, Pingu Ū) saves Alita and company after Mbadi expels them from Ketheres to burn up in atmospheric reentry.
Nola Defarge, known in Japan as Nora Lafargue (ノーラ・ラファルグ, Nōra Rafarugu), is a young woman who lives in Tiphares, but hasn't had her brain switched for a biochip.
Portrayed by Michelle Rodriguez Gelda (ゲルダ, Geruda) is the woman who saved Erica and Yoko (Alita) when they were children from a squad of Martian soldiers and took them into Grünthal.
After she dispatches two of his fellow guards, Tzykrow manages to slip through Alita's attacks and hit the override switch of her EVA suit, shutting off her stealth mode.
Colonel Payne (ペイン大佐, Pein Taisa) was originally the heartless owner of a juvenile infantry school, providing children to fight wars for entertainment on the space colony Leviathan 1.
After being dispatched by Alita for using innocent children as cannon fodder, Colonel Payne stays in her psyche as a Jungian shadow, embodying her dark side and, ironically, exerting more influence on her in his death than in life.
The Kingdom Parliament has a unique philosophy in that it has officially rejected the Methusalization made possible by Ping Wu's discovery that enables people to become effectively immortal, believing that human life has more value because of mortality.
His first appearance at a LADDER meeting led the Venusian and Jovian factions to suspect that Queen Limeira's dead father had transplanted his brain into König because his name means "king" in German.
The constitutional head of the Mars Kingdom Parliament, Queen Limeira (リメイラ女王, Rimeira Joō) is young, but has a wisdom beyond her years, being able to confound even Aga Mbadi.
She does hold her own in combat however, and demonstrates to be a formidable foe, quickly defeating Elf and Zwölf and then Sechs, only to be mercilessly dismembered by Alita seconds later.
Last member of the Guntroll, no more than an ordinary human nurse teacher, and a young one of all things, Saya (サヤ) appears to be carefree and always prone to smile, even when facing brutal opponents.
An arrogant practitioner of the Gadokai style, Gavit (牙鼻人, Gavito)'s strength and endurance was such that he could break a tank leg in half with a single kick.
Undefeated master of Electromagnetic Space Karate, Toji (刀耳, Tōji)'s gigantic body and expressionless face gives him the menacing look of a simple brute, in contrast to his calm and calculating personality.
He chose to surrender to Alita and Zazie in the Combat Chamber after they earned his respect by wounding and incapacitating him in the midst of his own "Mud Tsunami" death-trap.
The founder and former leader of the Starship Cult, Springfoot Jack (バネ足ジャック, Bane Ashi Jakku) was a former Stellar Nursery Society alumnus named Molonev Menhir who was left to his own devices along with other "graduates" upon reaching the age of fifteen.
Menhir then adopts a new persona named "Springfoot Jack", a sinister clown with extendable legs, arms, neck and fingers which are now attached by powerful springs.
He forms a traveling circus named "The Magic Troupe", a cult in which Jack captures victims to test their receptiveness to his hypnotism using brutal physical torture.
A "true inorganic life form" as dubbed by Mbadi, it is a nanomachine-based monstrosity born from unknown origin, but supposedly from the surface of Mercury years after the whole planet became covered in a sea of uncontrollable nanomachines in a Grey Goo event, and was created as a way to make contact with humans through the language of combat, though it was only able to form a grotesque caricature of what the nanomachines' collective mind thought humans were like.
While gargantuan and enormously powerful, Anomaly was basically instinct-driven and thus easily destroyed multiple times during the tournament, only to repair itself completely in a matter of seconds and then obliterate its enemies.
While his face is that of a young Zekka, Homme-du-feu sports a menacing, lycanthrope-like body with large clawed hands and feet, a mane around his head and wolf ears.
It is revealed in his youth that he was called Igrec and was raised by a gynoid named Olympe, at some point in his adulthood he was gripped by a maddening hunger which drove him to rip her to pieces but was unable to consume her non-biological body.
Indeed, Vilma is the only other Type-V mutant Victor cares for more than himself, as he nearly committed suicide in his grief and depression after she disappeared in ES 69, and was willing to sacrifice Zapolska to demonstrate human treachery to her.
Based on his experience of being betrayed and turned into a Type-V mutant and as a result of his Christian beliefs, Victor sees his fate as being heaven-sent and his mission as one to rid the world of "every last sinful lamb".
She attempted to kill him, but failed, getting dragged into a prolonged fight that nearly resulted in her death and Victor's near triumph, although he had to push himself to his full armored transformation to withstand her attacks.
Fearing a possible repetition of the events of fifty years before, Victor, happening upon Haruka in the woods, attacks her and tries to turn her into a Type-V mutant, telling her that if she can still wish for peace after becoming one then he will truly reconsider his position on humans.