Also known as: リアス・グレモリー
Main female protagonist in High School DxD. She a Pure-Blooded Demon as well as the heiress of the Gremory Clan and the former President of the Occult Research Club. She is also known as the "Crimson-Haired Ruin Princess" due to her hair color.
She has blue/Green Eyes, Large Breasts, and long Red Hair stylized with Crossed Bangs, an Ahoge, and Hair Between Eyes. She usually wears the Kuoh Academy School Uniform.
She represents the King (Chess) Chess Piece.
Voiced by Hikasa Youko in the anime.