Emma D'Arcy plays Princess Rhaenyra Targaryen and Matt Smith is Prince Daemon Targaryen.
Matt Smith, known to many as the eleventh Doctor in Doctor Who, and Prince Philip the Duke of Edinburgh in The Crown, plays Prince Daemon Targaryen, the younger brother to King Viserys and heir to the throne, a peerless warrior and a dragon rider.
Olivia Cooke plays Alicent Hightower and Rhys Ifans is Otto Hightower.
Olivia Cooke plays Alicent Hightower, daughter of Otto Hightower, the hand of the king, and "the most comely woman in the Seven Kingdoms.".
Welsh actor Rhys Ifans plays Otto Hightower, a loyal and faithful servant to both his king and his realm.