A "Game of Thrones" character, who was last seen during the Red Wedding, is set to appear in season 6 of the HBO fantasy series based on George R. R. Martin's "A Song of Ice and Fire" series.

According to spoiler forum Watchers on the Wall, Brynden Tully, popularly called the Blackfish, will be featured in season 6. He was last seen during the wedding feast in season 3, before the brutal massacre of Robb Stark, Talisa Stark, Catelyn Stark, and all their soldiers that was dubbed the Red Wedding.

The role of Brynden is being essayed by Clive Russell, and the character was assumed to be alive. Although there hasn't been any news of the character since the Red Wedding, fans have been expecting news of Blackfish's return ever since a Riverrun set was spotted in Corbet, Northern Ireland.

Watchers on the Wall, citing Los Siete Reinos sources, confirmed that Russell was seen filming as the Blackfish in Corbet. 

Season 6 will also see Jaime Lannister and Blackfish having an argument, and it is in line with what happens in "A Feast for Crows," the fourth "A Song of Ice and Fire" novel, reported Watchers on the Wall.

The return of Blackfish could possibly throw light on how Catelyn Stark's brother Edmure Tully (Tobias Menzies) is doing. The last we saw of Edmure, he was held captive by the Frey's during the Red Wedding. Another appearance that fans are eagerly awaiting is that of Lady Stoneheart, the undead Catelyn Stark.

However, fans are in for a disappointment, as Michelle Fairley recently said in an interview that it's just not going to happen.

"I am not under contract to 'Game of Thrones,'" the actress told Gulf News.

Season 6 of "Game of Thrones" is expected to return to HBO in April 2016.