Guest Stars Hafþór Júlíus Björnsson as Ser Gregor Clegane Anton Lesser as Qyburn Pilou Asbæk as Euron Greyjoy Marc Rissmann as Harry Strickland Bronte Carmichael as Martha Alexis Raben as Alanna Adam Devereux as Scorpion Gunner Frank Blake as Northern Sentry Derek Dubery as King's Landing Father Hayley McQuillan as Scared Older Girl Rosie McClelland as Flea Bottom Mother Thomas Martin as Gate Guard Jack Morgan as TBD Isaac Heslip as King's Landing Boy Louis McCartney as TBD Caitlin Pharro as Scared Little Girl Luna Kalo as TBD Brian Patrick Kennedy as TBD Matthew Wolf as Guardian of the Gate Luke McQuillan as Ferocious Northerner Nicky Harley as Terrified Mother Jim Tighe as Lannister Captain Mairi Hawthorn as Woman in the Alley Owen Whitelaw as Owen Laura Elphinstone as Nora Oliver Devoti as Northerner in the Alley Tipper Seifert-Cleveland as Nora's Daughter Ryan McKen as Unsullied Guard