Iwan Rheon

Welsh actor and singer who delivered a chilling turn as Ramsay Bolton, arguably the show's most infamous villain. Rheon first gained notice in the UK series Misfits (2009–2011) but became internationally known for Ramsay's sadistic charisma. He later joined Marvel's Inhumans (2017). Rheon's portrayal was so convincing that it cemented Ramsay as one of TV's most hated (and compelling) antagonists.