Muzan Kibutsuji

{Abilities} Face and Hair: Pale skin, wavy black hair, and piercing red eyes with slit pupils like a cat's.
Clothing: Extravagant European style - often seen wearing a suit and a white hat with a red ribbon.

Interests & Hobbies: As the "demon king," Muzan rules through absolute terror. He implants a curse in demons: speaking his name out loud kills them. He tolerates no disobedience, questions, or weakness, easily destroying even loyal servants (for example, executing the Lower Moons after Rui's death). At the same time, he is clever and skillfully manipulates the desperate, offering immortality and power (as in the case of Kokushibo).
Muzan lacks empathy and compassion. He justifies his killings as "the natural order of things," comparing himself to a natural disaster. To him, humans are livestock, and demons are tools. Even his tragic past doesn't make him a "tragic villain": he shows no compassion for other sick people, but only disgust at weakness.