The Hyodou twins despite beeing of the same cell could not be more different. Issei Hyodou the older twin, had brown hair and eyes. His younger twin Ryo Hyodou had bright white hair with a few red streaks and heterochromatic eyes one blue the other brown. There personality was different as well where Issei was obsessed with the female body Ryo loved there eyes, where Issei was perverted Ryo was lovingly and charming. Despite there differences Ryo would blindly help Issei with everything he dreamt of becoming.