Rias Gremory is a major character and one of the main heroines of the canon story, "Highschool DxD," and a major character in the fanon story, "Genei Ibunroku #DxD." A beautiful girl with a hardcore siscon for a brother, and a member of a wealthy family, she is considered to be one of the Two Great Ladies. She is a third-year student at Kuoh Academy.