"We never thought of Cersei as a particularly funny character until Lena read for the part. We had seen a number of excellent actresses, but everyone had interpreted the character as an emotionless ice queen. Lena took her in a different, stranger and more interesting direction. In her hands, Cersei embodies endless contradictions. The queen can seem both ruthless and fragile, often in the same scene. She can exhibit extreme cruelty but also utter devotion to her own children. And she’s damn funny, which is no surprise if you know Lena."
—David Benioff about Lena Headey