Muzan Kibutsuji, the Demon King and progenitor of all demons, is a terrifying apex predator of immortal evolution. With unmatched regeneration, grotesque shapeshifting, and monstrous intelligence, he embodies absolute control and dread. Obsessed with perfection, he manipulates his demonic army with blood-bound dominance. His final form in the Infinity Castle reveals a nightmarish fusion of flesh, bone, and tendrils—an organic god of destruction who fears only sunlight and mortality. Cold, ruthle