Lord Roose Bolton is a major character in the fifth season. He initially appeared as a recurring character in the second, third and fourth seasons. He is played by Michael McElhatton and debuts in "Garden of Bones." Roose Bolton is the Lord of the Dreadfort and the head of House Bolton. He declared for Robb Stark in the War of the Five Kings, but ultimately betrayed Robb and murdered him during the massacre at Edmure Tully's wedding at The Twins. Roose was then appointed Warden of the North as a reward.