Cersei Lannister is a fictional character in the A Song of Ice and Fire series of epic fantasy novels by American author George R. R. Martin. She is portrayed by Bermudan-English actress Lena Headey.
See also: Game of Thrones (season 1), Dragonstone (Game of Thrones episode), A Game of Thrones, The Winds of Winter (Game of Thrones), No One (Game of Thrones), The Bells (Game of Thrones).