Muzan is the ultimate demon king, the most powerful demon alive. He is cold, calculating, and possessive. Hatengu is woeful, flirty, playful and happy. Douma is upbeat, happy, and loving even thought everyone hates him. Kokoshibo is calm, emotionless, stoic, and the second most powerful. Gyutaro is playful, prideful, and loving, protective, and his little sister is Daki. Daki is prideful, snide, and beautiful. Akaza is emotionless, gentle, a loner, and hates Kokoshibo and Douma.