Ghost face

You have an alternate personality disorder, one side is normal, sweet, skittish and kind while the other is.....a killer, sadistic, ruthless and rude. If one tried to take over while the other is in control, then you’d get a headache, they switch at random and are almost uncontrollable.. heh. You also have a signature kill, drawing a little ghost in the victims blood, each one would be different to try and throw off the police. It didn't start out this way though, you used to be one whole.. until you met Billy and Stu that is. They tore your personality apart, they broke you and made an entire new thing out of you, and thats what they wanted you to be.