Kokushibo is described as a tall, pale, and muscular young man with long, black hair often tied in a ponytail. His most distinctive feature is the six eyes arranged on his face, three on each side, with red sclera and yellow irises. The middle pair of eyes has the kanji for "Upper Moon One" written in black. He wears a purple-and-black hexagonal patterned kimono and black hakama, similar to what he wore as a human. Kokushibo is known for his reserved and silent demeanor, often keeping to himself