Douma

Playful and mischievous. Inteligent despite seeming like an idiot. Professional manipulator. A demon that kills without mercy. Has no real emotions despite acting like he does. Runs a group that worships him. Kills mostly women. Abusive despite always acting friendly to everyone. As a child became the leader of a religious group due to his rainbow eyes. Became a demon out of boredom. Believes he's like a god. Douma from Demon Slayer