Kokushibo is a tall man with a muscular build and pale skin complexion. He possesses long, spiky black hair with red tips that he keeps in a ponytail. His most notable feature is the three sets of eyes on his face with yellow irises and red flesh sclera that have black straight lines diverging from each iris. His middle set of eyes has the daiji of "Upper Rank (上じょう弦げん, Jōgen?)" and "One (壱いち, Ichi?)" engraved in them while his other sets of eyes feature black pupils.