His name is Muzan Kibutsuji. He is the Demon King. Muzan is 1000+ years old. Muzan is cold-hearted, ruthless, intimidating, and exceptionally intelligent. He sees no value in any humans he has encountered and shows little value in his own subordinates. Muzan‘s blood demon art is called Biokinesis. His blood demon art to manipulate his body at will and shapeshift instantly and change his appearance. He has immeasurable regeneration, strength, speed, reflexes, endurance and unlimited Stamina.