Hannah John-Kamen (born 6 September 1989) is a British actress. She is known for her roles as Dutch in the Syfy television series Killjoys and as Viva in the West End musical Viva Forever. She is also known for her role as a Dothraki widow in the sixth season of the HBO series Game of Thrones and for voicing Sweet Shalquoir in the video game Dark Souls II. Her move into blockbusters came with the part of F'Nale Zandor in Steven Spielberg's Ready Player One.