: Issei's ultimate rival and the possessor of the "Divine Dividing" (White Dragon) wings. He represents the "anti-hero" archetype, constantly pushing Issei to reach new heights. Legacy and Popularity

: Starting as a weak, perverted student, Issei evolves into the "Red Dragon Emperor." His primary motivation is his dream of becoming a "Harem King," but his true strength comes from his unwavering loyalty to his friends and his unique ability to "Boost" his power exponentially.

: Rias's second-in-command and a fan favorite. Known for her seductive and sadistic personality in battle, she later reveals a more vulnerable side tied to her heritage as a "Holy Lightning" user, being the daughter of a fallen angel and a human.