Ainz Ooal Gown has the appearance of an Overlord, an undead skeleton creature who is devoid of skin and flesh. He wears an elaborate, jet-black academic gown adorned with golden and violet edges. When bare, his whole body alone is purely made up of just his bones. He also has a dark red orb floating under his ribs that emanates a feeling of dread.
He has a type of tiny dark red glow radiating from inside his empty eye sockets. Ainz has a dark halo-like object glimmering right behind his head.