Which Families Are in House of the Dragon?
"House of the Dragon" Episode 3 Introduces the Lannister Twins
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House Lannister is the only one of the great houses we knew from "Game of Thrones" (other than the Targaryens, of course) that we were sure would have some major characters in "House of the Dragon." Two Lannisters are in the main cast, with actor Jefferson Hall portraying both Jason Lannister, the lord of Casterly Rock, and his sly, politically minded twin, Tyland. Their choice of which side to back in the civil war has significant consequences if the show follows the same story as the book. Viewers met both brothers in the third episode.