Another GOT character will make a comeback during season 6, Los Siete Reinos (via Watchers on the Wall) reports.
It seems Brynden Tully, aka the Blackfish will be back for Season 6. Clive Russell, who plays the character, was recently spotted filming last year in Corbet, Northern Ireland.
It is also claimed that the scenes involve siege of Riverrun as well as confrontations between Jaime Lannister and the Tullys, which are in line with the books.
Blackfish was last seen in Season 3 where he left Walder Frey’s castle just before the red wedding. Walder Frey (David Bradley) is also confirmed to make a return.