Hannah Dominique E. John-Kamen (born 7 September 1989) is a British actress. She is known for her roles as Dutch in the Syfy television series "Killjoys", Ornela in the HBO series "Game of Thrones", F'Nale Zandor in Steven Spielberg's "Ready Player One", and Ghost in the Marvel Cinematic Universe movie "Ant-Man and the Wasp".