Kaine Akatsuki

Personality
He is the youngest son of the Akatsuki clan, one of the Seven Royal Moons. This means that he has the blood of Ancient Progenitors. He's very sadistically and eerily jolly and happy-go-lucky when it comes to the deaths and despair of both Vampires and humans. He always tries to convey to others, mainly the Hizuki brothers, that humans and Vampires can never coexist, no matter what.

Abilities
Just like Ko and most other Vampires with royal blood in their veins, Kaine has the ability to maniuplate his blood at will, mainly to create hardened, crystallized versions of weapons out of it. He's very powerful, even more powerful than Ko, actually, but that may not be for long, considering how Ko is blood directly from the old king.