Luke Barnes is a British actor and playwright, having written the plays Chapel Street, Bottleneck and Eisteddfod. In Game of Thrones he is playing the role of Rast, and was confirmed to be playing the role on 6 July 2010. With the start of the third season, Luke McEwan was credited as "Luke Barnes". His Twitter name was changed to "Luke Barnes (McEwan)" at the same time.