House of the Dragon casts Matt Smith, Olivia Cooke, Emma D’Arcy

House of the Dragon castHouse of the Dragon, the upcoming Game of Thrones prequel focusing on the Targaryens, has added three new cast members.

Variety reports that Matt Smith, Olivia Cooke, and Emma D’Arcy will star in the HBO series, joining the previously announced Paddy Considine.

Cooke (Vanity Fair, Bates Motel) will play Alicent Hightower, the daughter of Hand of the King Otto Hightower who was raised in the Red Keep, close to the king and his inner circle. The character is described as “the most comely woman in the Seven Kingdoms,” who has both “courtly grace and a keen political acumen.”

D’Arcy (Truth Seekers, Wanderlust) will play Princess Rhaenyra Targaryen, “the king’s first-born, pure Valyrian-blooded child who is a dragonrider. Some say Rhaenyra was born with everything… but she was not born a man.”

Smith (Doctor Who, The Crown) will play Prince Daemon Targaryen, King Viserys’ younger brother and heir to the throne. The character is described as a “peerless warrior and a dragonrider, Daemon possesses the true blood of the dragon. But it is said that whenever a Targaryen is born, the gods toss a coin in the air…” And we all know what that means.

As previously reported, House of the Dragon will be based on George R.R. Martin’s expansive book about the Targaryen dynasty, Fire & Blood. The series will be set a few hundred years before the events of Game of Thrones.

The series has received a 10-episode order from HBO. The show was co-created by Martin and Ryan Condal with Game of Thrones veteran director Miguel Sapochnik and Condal serving as co-showrunners as well as executive producers with Martin and Vince Gerardis. Sara Lee Hess will be writer and executive producer.

Some key art featuring dragons were recently released as well as the announcement that principal photography on the series will start in a few months.

House of the Dragon is supposed to air sometime in 2022.