The casting call for Season 3 of HBO’s resident fantasy-drama (but mostly drama) Game of Thrones was always going to be a big’un, as creators David Benioff and Dan Weiss face the challenge of further expanding George R.R. Martin’s already-unruly world; early word had the cast growing by at least 11. Today at Comic-Con, HBO officially revealed 14 new combatants in the Game of Thrones, with more announcements still to come. While many of them had already leaked out in the days leading up to the event, the biggest news is certainly that Dame Diana Rigg, best known for the 1960s British series The Avengers, has been tapped for the role of fan favorite Olenna Tyrell (aka Olenna Redwyne, aka “The Queen of Thorns”).

Hit the jump for more on Olenna and all the other new faces you’ll be seeing in Westeros next spring, including an introductory video screened at the Con. Also, click over to Matt Goldberg’s recap of the Game of Thrones panel to see what cast and crew had to say about the show.