Kyojuro Rengoku 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 was known to be charismatic and had an air of great optimism, having an enthusiastic smile on his face all the time. He can be kind and loving, and very sweet, even though he tends to be an airhead and kind of dense.