Arrogant, narcissistic, heartless.He got in some trouble with a demon because of his big ego so he end it up demon marked.Tough he managed to kill the demon in the end with Samuel's help [there is were he got his eyes cursed and can't change his left eye to human blue], he got a part of his soul snatched that's why he doesn't know when to stop when he hurts someone, can not distinguish between good and evil because he just doesn't care.

He is also the one that sired Samuel.