Guest Stars Jacob Anderson as Grey Worm Hafþór Júlíus Björnsson as Ser Gregor Clegane Anton Lesser as Qyburn Diana Rigg as Lady Olenna Tyrell Ellie Kendrick as Meera Reed Gemma Whelan as Yara Greyjoy Rupert Vansittart as Lord Yohn Royce Richard Rycroft as Maester Wolkan Staz Nair as Qhono Pilou Asbæk as Euron Greyjoy Rosabell Laurenti Sellers as Tyene Sand Sara Dylan as Hand Maid Tom Hopper as Dickon Tarly James Faulkner as Randyll Tarly Jim Broadbent as Archmaester Marwyn Mark Gatiss as Tycho Nestoris Brendan Cowell as Harrag Luke Wilson Hanley as Ironborn Sailor