this person has two personalities:
1) A doppio personality that stays longer due to its good-natured nature, following all the orders of its boss, which is a second personality
2) The personality of a mafia boss named Diavolo who is a violent person by nature. The boss can switch places in the body with Doppio, and when Doppio is awake, Diavolo communicates with him using objects that seem to doppio as if they are a phone and calls him  
This person has a King Crimson! 