The Game of Thrones spinoff House of the Dragon is picking up speed as it adds new cast members and bit of plot detail. This week, the upcoming show adds three new cast members with character outlines coming straight from HBO itself.

Joining the growing cast alongside the previously announced Paddy Considine are Olivia Cooke (Ready Player One), Emma D'Arcy (Truth Seekers), and Matt Smith (Doctor Who).

Cooke will play the part of Alicent Hightower. She's the daughter of Hand of the King Otto Hightower. Alicent was raised in the Red Keep and has developed a keen political acumen, as well as being "the most comely woman in the Seven Kingdoms" according to HBO's character profile.