Guest Stars Daniel Portman as Podrick Payne Jacob Anderson as Grey Worm Ben Crompton as Eddison Tollett Kristian Nairn as Hodor Hafþór Júlíus Björnsson as Ser Gregor Clegane Owen Teale as Alliser Thorne Brenock O'Connor as Olly Ellie Kendrick as Meera Reed Gemma Whelan as Yara Greyjoy Fergus Leathem as Ser Rodrik Cassel Nell Tiger Free as Princess Myrcella Baratheon Brian Fortune as First Builder Othell Yarwyck Richard Rycroft as Maester Wolkan Faye Marsay as The Waif Pilou Asbæk as Euron Greyjoy Ian Whyte as Wun Weg Wun Dar Wun Michael Condron as Bowen Marsh Elizabeth Webster as Lady Walda Bolton Kae Alexander as Leaf Patrick Malahide as King Balon Greyjoy Max Von Sydow as Three-Eyed Raven Robert Fawsitt as Loyal Night's Watch Man Paul Rattray as Lord Harald Karstark Sebastian Croft as Young Eddard Stark Michael Feast as Aeron Greyjoy Sam Coleman as Wylys (Young Hodor). Matteo Elezi as Young Benjen Stark Annette Tierney as Old Nan Tony Flynn as Night's Watch Man Steve Cash as Loyal Night's Watch Man Michael Hayes as Night's Watch Man Dylan Edwards as King's Landing boaster Richard Laing as Lannister Captain Cordelia Hill as Young Lyanna Stark