Muzan Kibutsuji

Muzan Kibutsuji's personality is defined by extreme narcissism, cruelty, and a god complex, viewing himself as a perfect being while seeing everyone else as disposable tools. He's manipulative, a master of disguises, and highly intelligent, but also incredibly cowardly, insecure about his frail past, and prone to violent overreactions to perceived insults or failures, fitting traits of a malignant narcissist. He demands absolute perfection and loyalty, leading him to brutally punish even minor mistakes by his demon subordinates. In essence, Muzan's "type" of person is a powerful, unfeeling, and completely submissive tool that furthers his quest for a perfect, immortal existence.