Muzan Kibutsuji

Muzan Kibutsuji is the main antagonist of no Yaiba Kimetsu no Yaiba. He was the first demon to exist and is able to turn humans into demons as well. He was the one who killed the Kamado family and turned Nezuko into a demon. Muzan is very arrogant and is also a perfectionist. He is very ruthless and brutal as well. He leads a group of powerful demons, called the Twelve Demon Moons.

Trivia

 * His design with the white fedora and curly hair, reminded a lot of viewers of Michael Jackson.