Five is actually a robot, but NO-ONE knows. He DOESN'T wanna tell ANYONE. The real Five died by X after X got possessed. (Two was spared, but he was hypnotized by X('s possesser). Six got half hypnotized and can barely control herself.) Five's creator is unknown. He sometimes slips up revealing he's an AI, but he manages to stay calm so the others don't know about his secret. His personality is usually negative but he calms Four when Four cries. As far as Five knows, X is the biggest threat.