Mary, Queen of Blood is a fictional character from the Vampire Chronicles series by Anne Rice. She is depicted as a powerful vampire queen with a complex history, embodying themes of immortality, love, and loss. Her character explores the darker aspects of existence and the moral dilemmas faced by those who live forever. In the series, Mary is often portrayed as a tragic figure, struggling with her identity and the consequences of her actions. Her story intertwines with other notable characters, such as Lestat de Lioncourt and Louis de Pointe du Lac, highlighting the intricate relationships within the vampire community.