Faye Marsay
Faye Marsay is the British actress who plays the absolutely terrible Waif on Game of Thrones. Safe to say that offscreen, Faye is more polished.
Lena Headey
If Cersei ever chopped her hair off and went for a darker look, it would only make her more fierce and sinister. And that would be so very bad a** of her. But for Cersei to smile? Yeah, not gonna happen.