Edmure Tully (Tobias Menzies)
Who: After his extended imprisonment, the late Catelyn Stark’s brother betrayed his uncle Brynden “Blackfish” Tully and turned over Riverrun to Jaime Lannister, who threatened to catapult Edmure’s baby at the castle.
Last seen: As the Lord of Riverrun, telling his men to lay down their arms and open the gates to the Lannister forces.