Alfie Allen
Theon Greyjoy's family is cast in this episode. The role of his father Balon Greyjoy, Lord of the Iron Islands, went to the English actor Patrick Malahide. The character of his sister was renamed from the original books (from Asha to Yara) in order to avoid confusion with the already established character Osha (the wildling captive at Winterfell), and Gemma Whelan was chosen to play the role. After seeing Whelan and Alfie Allen (Theon Greyjoy) acting together, the show creators assured that they made "an insanely good pair of siblings." Alfie Allen's sister, the English pop star Lily Allen, asserted that she had been offered the role of Yara Greyjoy, but had turned it down due to some scenes potentially being awkward to film. Alfie Allen, however, vehemently denied his sister's claims.