Kyojuro Rengoku is greatly enthusiastic in regard to his duties as a Hashira, and often comes across as cheerfully eccentric. He is a young adult of tall stature and lean-muscular build. He has long bright yellow hair with red streaks akin to flames along with two shoulder-length bangs and two chin-length bangs on the side of his head, black forked eyebrows, and golden eyes that fade to red with white pupils. He is known to be charismatic and has an air of great optimism. Amiable, pure of heart.