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 much-anticipated third season of 'House of the Dragon' expands its cast with actors Tom Cullen, Joplin Sibtain, and Barry Sloane. As the fantasy series, a prequel to 'Game of Thrones,' begins filming,

House of the Dragon just fielded three new knights in the Targaryen civil war known as the “dance of the dragons.” Tom Cullen will play Ser Luthor Largent, Joplin Sibtain will play “Bold” Jon Roxton,” and Barry Sloane will play Ser Adrian Redfort,