Queen of the Seven Kings, wife of the late King Robert Baratheon, biological mother of King Joffrey, King Tommen and Princess Myrcella.She is the eldest daughter of Tywin Lannister, the former prime minister of the Seven Kingdoms and Duke of Casterly Rock. She has a twin brother, Jaime Lannister, both of whom have the typical Lannister family inheritance of blond hair and blue eyes.
The siblings also have a younger brother, Tyrion Lannister, who is a disabled and ugly dwarf, with whom Cersei has a bad relationship.