Rias Gremory is a central character in the anime series High School DxD. She is a third-year student at Kuoh Academy and the president of the Occult Research Club. Rias is a pure-blooded devil and the heiress of the prestigious Gremory Clan, known for her power and beauty. As a devil, she recruits the protagonist, Issei Hyoudou, into her peerage after reviving him. Rias plays a significant role as a mentor and leader, guiding Issei and his friends through various supernatural challenges while developing her own romantic feelings for him.