Paddy Considine King Viserys Targaryen Actor Matt Smith Prince Daemon Targaryen Actor Olivia Cooke Alicent Hightower Actor Emma D'Arcy Princess Rhaenyra Targaryen Actor Fabien Frankel Ser Criston Cole Actor Rhys Ifans Otto Hightower Actor Graham McTavish Ser Harrold Westerling Actor Matthew Needham Larys Strong Actor Jefferson Hall Tyland Lannister, Lord Jason Lannister Actor Gavin Spokes Lord Lyonel Strong Actor Bill Paterson Lord Lyman Beesbury Actor Ryan Corr Ser Harwin "Breakbones" Strong Actor George R.R. Martin Executive Producer Ryan Condal Executive Producer, Writer Miguel Sapochnik Executive Producer Vince Gerardis Executive Producer Sara Hess Executive Producer, Writer Ron Schmidt Executive Producer Clare Kilner Director Geeta Patel Director Greg Yaitanes Director David Hancock Co-Executive Producer Jocelyn Diaz Consulting Producer Charmaine De Grate Writer, Co-Executive Producer