So what do we have this season? A lot of Dorne, as Jaime (unlike the books) gets sent down South. This means more Martells and the Sand Snakes. There will be Tyrion somewhere after escaping King’s Landing, Arya going to Braavos, Jon Snow on the Wall and a lot more to be revealed.
Alexander Siddig as Doran Martell, the ruling Prince of Dorne, and elder brother of the deceased Oberyn Martell.
Toby Sebastian as Trystane Martell, the son of Doran Martell.
Nell Tiger Free as Myrcella Baratheon, Cersei’s daughter. The role was portrayed by Aimee Richardson in the first two seasons.
Keisha Castle-Hughes as Obara Sand, the eldest of the “Sand Snakes”, the bastard daughters of Oberyn Martell.
Jessica Henwick as Nymeria Sand, the second-eldest Sand Snake.
Rosabell Laurenti Sellers as Tyene Sand, another Sand Snake and the daughter of Ellaria Sand.
DeObia Oparei as Areo Hotah, the captain of the Dornish palace guard.
Jonathan Pryce as The High Sparrow, the leader of the militant faithful in King’s Landing.
Hannah Waddingham as Septa Unella, a member of the “Most Devout”, the ruling council of the Faith of the Seven.
Enzo Cilenti as Yezzan, a Yunkish nobleman and slave trader.
Michael Condron as Bowen Marsh, First Steward of the Night’s Watch.
Adewale Akinnuoye-Agbaje as Malko. Few details have been released about the character, although he is not based on a character from the novels.