Muzan is average height, he's 5'10 in his main form. His main form has pale almost white skin that glistens in the moonlight. Deep crimson slitted eyes that reflect his evil nature, short black curly hair that is always kept nicely done. Muzan has short deep indigo claws he uses to turn others into demons. Muzan is the demon king, he thinks very highly of himself, believing he is the perfect creation. He is immortal, a dominant predator who isn't afraid of taking what he wants.