Guest Stars Jacob Anderson as Grey Worm Gemma Whelan as Yara Greyjoy Art Parkinson as Rickon Stark Ian Whyte as Wun Weg Wun Dar Wun Bella Ramsey as Lyanna Mormont Enzo Cilenti as Yezzan zo Qaggaz George Georgiou as Razdal mo Eraz Paul Rattray as Lord Harald Karstark Dean S. Jagger as Smalljon Umber Eddie Jackson as Belicho Paenymion Rory Mullen as Captain of the Bolton archers Mark Tankersley as Bolton general