Matt Smith (image via BBC), Olivia Cooke (image via Instagram), and Emma D’Arcy (image via Instagram) The cast of House of the Dragon, the Game of Thrones prequel set 300 years before the events of the HBO series, is finally coming into focus. Via The Hollywood Reporter, the show has added Olivia Cooke (Ready Player One), Matt Smith (Doctor Who, The Crown), and Emma D’Arcy (Wanderlust). The events of this new show will be drawn from Fire and Blood, George R.R. Martin’s 2018 book about the history of the Targaryen house. In October, HBO announced that Paddy Considine will play King Viserys Targaryen. Now, we know a bit more about the rest of the Targaryen clan. Smith is set to play Prince Daemon Targaryen, described by HBO as the “younger brother to King Viserys and heir to ...