House of the Dragon: Cast & Characters

King Viserys Targaryen
Played by Paddy Considine

Viserys was chosen by the lords of Westeros to succeed the Old King, Jaehaerys Targaryen, at the Great Council at Harrenhal. A warm, kind, and decent man, Viserys only wishes to carry forward his grandfather’s legacy, but as we’ve learned from Game of Thrones, good men do not necessarily make for great kings.

Prince Daemon Targaryen
Played by Matt Smith

The younger brother to King Viserys and heir to the throne. 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…

Lord Corlys Velaryon, 'The Sea Snake'
Played by Steve Toussaint

The lord of House Velaryon, a Valyrian bloodline as old as House Targaryen. As ‘The Sea Snake’, the most famed nautical adventurer in the history of Westeros, Lord Corlys built his house into a powerful seat that is even richer than the Lannisters and that claims the largest navy in the world.

Otto Hightower
Played by Rhys Ifans

The Hand of the King, Ser Otto loyally and faithfully serves both his king and his realm. As the Hand sees it, the greatest threat to the realm is the king's brother, Daemon, and his position as heir to the throne.

Princess Rhaenyra Targaryen
Played by Emma D'Arcy

The king’s first-born child. She is of pure Valyrian blood, and she is a dragonrider. Many would say that Rhaenyra was born with everything… but she was not born a man.

Princess Rhaenys Velaryon
Played by Eve Best

A dragonrider and wife to Lord Corlys Velaryon, "The Queen Who Never Was" was passed over as heir to the throne at the Great Council because the realm favored her cousin, Viserys, simply for being male.

Alicent Hightower
Played by Olivia Cooke

She’s the daughter of Otto Hightower, the Hand of the King, and the most comely woman in the Seven Kingdoms. She was raised in the Red Keep, close to the king and his innermost circle; she possesses both a courtly grace and a keen political acumen.

Ser Criston Cole
Played by Fabian Frankel

Of Dornish descent, Ser Criston is the common-born son of the steward to the Lord of Blackhaven. He has no claim to land or titles; all he has to his name is his honor and his preternatural skill with a sword.

Mysaria
Played by Sonoya Mizuno

She came to Westeros with nothing, sold more times than she can recall, and she could have wilted... but instead she rose to become the most trusted -- and most unlikely -- ally of Prince Daemon Targaryen, the heir to the throne.