Xenovia Quarta is a prominent character in the anime series High School DxD. She is initially introduced as a Holy Sword wielder and a member of the Church, specifically the Vatican's combat unit. Xenovia is known for her strong, straightforward personality and her unwavering devotion to her duties. However, after discovering the truth about the Church and its intentions, she defects and becomes a Devil, joining Rias Gremory's peerage as a Knight. Her character evolves as she adapts to her new life, balancing her old beliefs with her new reality.