After sister was killed, turned sociopathic and used violence against suspects and criminals. Monotone and apathetic. Hardened himself to the outside world. Buried himself in work. Went through the motions instead of fighting for those who were wronged. Didn't talk to others outside of work. Very vengeful. Never fully adopted John's methods/philosophy, preferred only to torture others for amusement. Very intelligent. Fights with Amanda and competed for John's affection. Jigsaw apprentise/killer