Nebiros is a mysterious figure and the foster father of Aaron. He claims to be a demon though he is more commonly associated with werewolves, who fear and adore him. Some time before, he had "purchased" Aaron from his drunken father and lured him into a secluded castle. He provides the boy with everything he desires and soon takes him as a confidant. Cursed by "forces of light," he becomes wracked with pain and must remain in isolation. Despite this curse, he is a powerful demon, able to turn underlings into stone with one touch of his sigil ring. Upon Aaron's betrayal, he abandons the boy and isolates himself. Oddly enough, he seems to be acquaintances with Bellus, though he shows no liking for the other male. source: