wavy black hair and blood red eyes. cold-hearted & ruthless. extremely: manipulative, intimidating, and intelligent. rarely expresses any emotion other than anger & distaste. appears completely monotone and detached most times. inflated ego and delusional sense of self worth are so evident that he can't stand being mocked to corrected in any fashion. Muzan is the Demon King & hates and kills humans. he deems most subordinates and others below himself and distasteful. wants the Blue Spider Lily.