Cersei Lannister (Lena Headey)Cersei is the daughter of Lord Tywin Lannister, the richest man in all of Westeros and the late Joanna Lannister. She is the wife of King Robert Baratheon and as such is the Queen of the Seven Kingdoms.She is twin sister to Jaime, with whom she maintains a very close relationship. She is elder sister to Tyrion for whom she only has disdain because he is a dwarf and their mother died giving birth to him.Cersei is beautiful, cunning, and ambitious. She is wife to Robert Baratheon in name only, seeking affection elsewhere, but relishes her role as queen. She is fiercely protective of her children Joffrey, Myrcella, and Tommen and is not above taking down others in order to elevate them and the Lannister name.In addition to her ruthlessness, Cersei is also quite funny, with a cutting and quick sense of humor.Because Tywin was often away from their home at Casterly Rock serving as Hand to the King when she was young, Cersei, Jaime, and Tyrion were primarily raised by servants.