Muzan Kibutsuji

Muzan Kibutsuji is the primary antagonist of the anime series Demon Slayer: Kimetsu no Yaiba. He is the first and most powerful demon, responsible for the creation of all other demons in the series. Driven by a fear of death and an insatiable desire for immortality, Muzan's actions are rooted in his tragic past, making him a complex villain who embodies the consequences of extreme fear and desperation.