Characters from past seasons of “Game of Thrones” have been popping up left and right in Season 6 of the HBO series. Episode 6 featured the return of Benjen Stark and Edmure Tully, who will both play key roles going forward. Edmure has resurfaced as Walder Frey’s last bargaining chip to retain the lands he gained in his Lannister alliance. It’s been nearly three years since we’ve seen the character, so here’s a refresher of who Edmure is and what could happen now that he’s back.

Edmure (Tobias Menzies) is the brother of Catelyn Stark (Michelle Fairley) and Lysa Arryn (Kate Dickie) and son of Hoster Tully. He isn’t the sharpest character on “Game of Thrones,” nor is he the best warrior. He made several blunders in the war against the Lannisters while fighting under Robb Stark (Richard Madden). He would later take Robb’s place in marrying one of Walder’s (David Bradley) daughters, but Robb’s decision not to stay true to his oath is what led to his downfall.

The last time we saw Edmure was at the Red Wedding in Season 3. He was carried off to his bedding ceremony with his new wife just before the Starks were slaughtered by Walder. Walder then threw Edmure into a dungeon and has been keeping him as a prisoner ever since. Edmure’s uncle, Brynden Tully, aka the Blackfish (Clive Russell), was able to escape the Red Wedding and avoided being killed by Walder's men. The Blackfish was able to gather up enough men to take back his home of Riverrun from the Freys.

Walder wants Riverrun back and plans to use Edmure as a hostage to make that happen. Walder hopes the Blackfish will want to save his nephew, but the promo video for the next episode shows that the Blackfish won’t be so easily persuaded. He is shown telling Jamie Lannister (Nikolaj Coster-Waldau) that as long as he still stands the war isn’t over.

It’s unclear what will happen next to Edmure on “Game of Thrones,” but it doesn’t look good. In an interview with Entertainment Weekly, Menzies revealed that things are only going to get tougher for Edmure in the series.

“He is still a prisoner of the Freys, and then the Freys try and use him as bait to reclaim Riverrun, which is his ancestral home. And then Jamie Lannister gets involved. [Edmure] becomes a pawn in a large political fight. He ends up having to make a very difficult decision over whether to betray his family,” Menzies dished.

“Game of Thrones” Season 6, episode 7, airs Sunday, June 6, on HBO at 9 p.m. EDT.

Edmure Tully Edmure Tully (Tobias Menzies, pictured) is still alive but remains a prisoner of Walder Frey (David Bradley) on “Game of Thrones” Season 6. Photo: HBO