Offered the job on House of the Dragon before she knew how many life stages and child actors the casting would require, James began with the older performers. “We cast the elder generation, Emma D’Arcy and Olivia Cooke, first,” Condal notes. “The challenge was in finding two young actors who not only had an ability that measured up to Olivia and Emma’s considerable talents, but who also looked like them.”

“You cast Emma, who is in my mind one of the most extraordinary actors of their generation; that was a slow process, as you can imagine,” James elaborates. “Once you get them cast, you say, ‘Can you send me pictures of Emma when they were younger?’ That informs and steers you.” Fortunately, James had a young actor in mind.“I’d already seen Milly in Upright, and I met her when she was in London when she was about 18,” James continues. “The luck is that when you cast Emma, I suddenly went, ‘Oh my God, Milly is a doppelgänger.’”

Similar synchronicity took place with the casting of Alicent, though other factors were at play. “We were blessed that Emily has an almost identical profile and demeanor” to Cooke, James says. “There was a bit of worry at one point because Emily had to have a scene where she’s in bed with Paddy, who’s 47, and she’s 18. She had just turned 16, I think, when we cast her; I thought, Oh God, should we be casting so young? And we said, ‘Yes, because that’s the point. That is the cruelty of the story: These two really charming best friends are royally fucked over by their fathers and everyone around them.’”

I spoke to House of the Dragon co-creator/co-showrunner Ryan Condal and casting director Kate Rhodes James about the challenge of double (and triple) casting the show’s characters for Vulture. This was a really fun and informative piece to put together, and I hope you enjoy it!