Muzan Kibutsuji Is a Demon. He is the King of the demons. Muzan is 1000+ years old. Muzan's Blood Demon Art is called Biokinesis this allows him to shapeshift. Muzan’s goal is to create a demon that can overcome the sun and find the blue spider lily. 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.  He also is fears Yoriichi Tsugikuni because Yoriichi almost Killed him.