Big Eater: An instance of Fridge Brilliance: Saya only receives just enough blood to keep from getting thirsty, but her body still needs more energy. Human food isn't quite enough to match up to blood, which is why she burns through calories so quickly and has to eat so much.
Good Thing You Can Heal: Takes advantage of it during her final fight with Karl, when she impales herself through the stomach to stab Karl, who was behind her.
Nice Job Breaking It, Hero: There surely could never be a reason why that girl with the beautiful voice is locked away in a tower on your foster father's property...
Took a Level in Jerkass: After regaining her memories in the manga. She even flatly tells Riku she's going to kill him because he's a chiropteran. Considering what she was going through, it's understandable, and she seems to be uncertain about it afterwards. (Still pretty mean, though, Saya.)
Unstoppable Rage: Occasionally falls into this in the first part of the series.
Mr. Fanservice: Lampshaded in the anime when Saya has to infiltrate a Vietnamese boarding school and Hagi poses as a gardener to protect her. Cue squealing fangirls.
Oblivious to Love: Ironically, just as Saya doesn't notice his romantic attraction towards her, Kai doesn't realize that Mao loves him and is confused when she kisses him.
Good Is Not Nice: He completely pounds Kai early on to teach him a lesson about the kind of world they're in and forces Saya to fight despite knowing it's emotionally breaking her.
What Happened to the Mouse?: Halfway through season four, he shoots David, gets shot in the arm in return, and...never appears again.
Mao Jahana
Tropes associated with Mao:
Demoted to Extra: Only appears as a very minor character in the manga, first bullying Saya because she's jealous that she lives with Kai, then recruits Saya to be in the school play in hopes that Kai will come and watch.
All Women Love Shoes: Rare anime example. She once sees a guy with cute sneakers, kills him, takes said shoes and wore them for the rest of the episode.
Motive Rant: Gives one to Saya right before they fight at the opera house, in the hopes that her sister would agree and they wouldn't have to kill each other.
Face Stealer: First appears disguised as an old woman, then kills a Red Shield operative and spends the next few episodes disguised as her. And in the last few episodes, he arrives for the final battle disguised as Diva to buy time against Saya.
Harmless Electrocution: Averted. After being impaled on the Chrysler Building's spire, Amshel is fried by a lightning bolt attracted by the spire's point. He survives (barely) but his healing factor has him stuck between his human and chiropteran forms when he returns to finish his fight with Haji.
Heel Face Turn: Though only out of love for Saya, as opposed to a change in morality.
Light is Not Good: Described to have the face of an angel and wears white to symbolize his devotion to Diva. When he changes to Saya's side, he starts wearing all black instead.
Man in White: Well, at least until he follows Saya
Irony: After an encounter with Saya leaves him fatally wounded and unable to regenerate, he's forced to get Schiff implants to stay alive. Doesn't help afterward that Diva loses interest in him.
Tragic Villain: Perhaps the only one of Diva's chevaliers to be genuinely devoted to her, Diva casts him off when he's grafted with Schiff body parts following his first defeat by Saya.
Beware the Nice Ones: Despite working for the villains, he's actually quite friendly. But the few times he does threaten someone, it's freaking creepy.
Mercy Kill: After seeing that Diva has died and lamenting on her own foolishness, he reverts to Chiropteran form and gently asks Saya to kill him, since he would essentially be living an empty life of immortality. Saya grants his last wish. ... although he's later seen to have survived the encounter and disguised himself as a reporter.
Obfuscating Stupidity: Drops a big, whopping hint that he was the chevalier of Diva and Saya's mother.
Dirty Business: Irene admits to both Ghee and Kai that she does not want to kill anyone anymore, despite having little choice in the matter.
Hyper Awareness: Irene is the only one of the Schiff who possesses this ability, being able to sense any target within a fairly wide distance of herself.
