Returning cast members for season three include Matt Smith, Emma D’Arcy, Olivia Cooke, Steve Toussaint, Rhys Ifans, Fabien Frankel, and Ewan Mitchell.

Tom Cullen (“The Gold,” “Trespasses”), Joplin Sibtain (“Andor,” “Safe”), and Barry Sloane (“Sandman,” “Revenge”) have all joined the upcoming season of the hit “Game of Thrones” prequel. Cullen will play Ser Luthor Largent, with Sibtain set as Ser “Bold” Jon Roxton and Sloane as Ser Adrian Redfort.

The third season of House of the Dragon has added Tom Cullen, Joplin Sibtain, and Barry Sloane, reports Variety. The series is based on Fire and Blood by George RR Martin. The second season of the series followed the Greens and the Blacks as they furthered their struggle for control over the Iron Throne of Westeros.