Rengoku is a 20-year-old man with cream-toned skin, bright yellow hair with red streaks, black forked eyebrows, and golden eyes. His outfit consists of the regular Demon Hunter uniform along with a Haori with a white-yellow gradient pattern and red flame-like crests at the tips. Rengoku is the most enthusiastic of all the Pillars, he is kind and boasted extraordinary technique and swordsmanship derived from strict practice and discipline.