Muzan is a tall man with a lean muscular build along with an unnaturally pale skin complexion. He has curly black hair, and sharp, almond-shaped eyes. His irises are cat-like in appearance and colored plum red. He also possesses sharp, blue nails on his hands. Muzan wears a white fedora with a red ribbon and an embroidered black tuxedo and a white tie over a black dress shirt and black dress pants. Muzan is cold-hearted, ruthless, intimidating, and exceptionally intelligent.