Hannah Dominique E. John-Kamen (born 7 September 1989) is an English actress. She is known for her roles as Yalena "Dutch" Yardeen in the Syfy television series Killjoys (2015–2019), Ornela in the sixth season of the HBO series Game of Thrones (2016), F'Nale Zandor in Steven Spielberg's film Ready Player One (2018), Ava Starr / Ghost in the superhero film Ant-Man and the Wasp (2018), the title character in the Netflix mystery miniseries The Stranger (2020), and Jill Valentine in the film Resident Evil: Welcome to Raccoon City (2021).