We eventually learn why: Einsturzen noticed Heine's exceptional abilities and wanted to experiment on him and attach the "Master" spine to his body. Heine accepts under the hope that with it, he'll be stronger and better able to help his friends escape. Unfortunately, once the spine begins to successfully fuse to his body, Einsturzen decides that she doesn't need the other test subjects anymore and has them kill each other. Heine escapes the "Master" process early but not enough to stop himself from disemboweling Lily in cold blood.
My Greatest Failure: Heine inadverdently caused the deaths of all his friends/family before escaping the organization. He truly regrets accepting Einsturzen's offer.
Scars Are Forever: Badou has scars on both his right hand and right eye (underneath the eyepatch). These are implied to have something to do with his older brother, but little more than a very brief, bloody flashback has been shown so far to explain the wounds.
Smoking Is Cool: A trait he picked up from his brother who he idolized.
You Killed My Parents: The reason she trained with Fuyumine was to one day kill him. Subverted when he is killed by someone else and it turns out he was innocent anyway. She is now looking for their true killer.
My Greatest Failure: Is very bothered by the fact that he was unable to stop his student from murdering the woman he loved. He's even MORE bothered by the fact that his student even turned out that way.
A Mad Scientist working for an as of yet unnamed underground organization.Giovanni and Heine occasionally call her "Mother."
Abusive Parents: To the Cerebus spine children, most of whom are probably not her actual children. She makes them fight huge monstrosities to earn her fleeting love.
Ax Crazy: She has yet to pick up an actual weapon but someone who smiles while people are getting mauled barehanded is not right in the head.
Back from the Dead: The original body is killed (or at least one of them is) by Heine. Another body walks up and keep talking to Heine and Magato as if nothing happened.
Body Surf: She's a Cerebus spine person too but instead of healing, she can just transfer her consciousness into another body. After Heine shoots the first one to death, her next body is Lily.
Dissonant Serenity: Smiles and hugs Heine gently all the while telling him to brutally massacre a hulking man beast.
Hive Mind: There are at least three other Einsturzen working in her organization. All of them look relatively similar and are modified to share experiences and memories when one dies.
Yandere: Showers those who do well against her creations with affection, is rather callous to those who don't but still have the nerve to survive.
Campenella Fruhling
A hired gun swordswoman who appears to be working with Einsturzen. She leads a troupe of helmeted, black-clad Nigh Invulnerable minions. Nuki and Loki's apparent guardian. Recently revealed to be the original Naoto & also the killer of Naoto Fuyumine's parents.
Affably Evil: Rather polite and formal to Bishop, even leaving him her name.
Badass Boast:"Forgive the lack of ceremony but I have to kill anyone who sees us. Any last prayers?"Bishop escapes and is blind, so technically this is still true.
Badass Normal: Assuming she doesn't somehow have a Cerebus spine.
Two young twin girls who are always together and work as bounty hunters. They are under Fruhling's care and apparently part of Einsturzen's organization.
Scars Are Forever: Still has the scar that Naoto gave him when she attacked him for killing Fuyumine.
Vague Age: Or perhaps, Younger than They Look. In the prequel, Magato seems noticebly older than Naoto (early 20's vs mid teens) whereas in the series proper, he seems 5 years older at the most.
Wild Card: No one is sure who's side Magato is on. He seems a bit obsessed with killing Naoto but expresses something resembling fraternal concern when her fighting style becomes inexplicably more cutthroat. He also drops his fight with Heine over the suspicion that she's in danger. It's implied that the only thing Magato cares about in any intense manner is Naoto but for what reason, purpose or even if this is a good thing hasn't been explained yet.
