This are the confirmed characters of Season 3 for now. I'll put my suggestions first.
-Mance Rayder: We’ve heard about him all season. A former member of the Night’s Watch who became the “King Beyond the Wall,” the leader of the Wildlings. MADS MIKKELSEN/ THOMAS KRETSCHMANN
– Daario Naharis: A confident and seductive warrior. RICHARD ARMITAGE/ JARED LETO
– Jojen Reed; Meera Reed: A teenage brother and sister duo with special insights. ASA BUTTERFIELD
– Edmure Tully: A brash young member of the Tully family. MICHAEL FASSBENDER/ TOM HIDDLESTON/ DAMIAN LEWIS/ RICHARD ROXBURGH
– Ser Brynden Tully (The Blackfish): Catelyn Stark’s uncle. LIAM NEESON/ VINCENT REGAN/ JASON ISAACS/ JEREMY IRONS
– Lady Selyse Florent: Stannis Baratheon’s wife. HELEN MCCRORY
– Shireen: Stannis’ daughter. I HAVE NO IDEA
– Olenna Redwyne (The Queen of Thorns): Margaery Tyrell’s sharp-witted grandmother. JUDI DENCH
– Beric Dondarrion: A skilled knight who is the leader of the outlaw group Brotherhood Without Banners.DAVID WENHAM/ TONY CURRAN
– Thoros of Myr: A red priest who follows the same religion as Melisandre. BILL NIGHY
– Tormund Giantsbane: A Wildling raider. RON PERLMAN/ BRENDAN GLEESON







