Itto has white spiked hair with pale red streaks that goes down to his back. As an oni, he has two red horns on his forehead. Itto also has eyes that fade from red to yellow and diamond-shaped pupils and has pointed ears. His face is painted with red makeup which extends from his upper eyelid to this lower eyelid, and numerous parts of his body, arms and head are also painted with red lines. Itto is extremely allergic to beans; making contact with one can cause significant shock.