Actor: Lena Headey. Season 2 plays out against the backdrop of a fast-approaching winter. But the Lannister hold on the Throne is under assault on many fronts. There's Robb Stark, son of the slain Lord of Winterfell, Ned Stark; Daenerys Targaryen, who looks to shore up her depleted power through three newborn dragons; Stannis Baratheon, eldest brother of the late King Robert; and Stannis' brother Renly, who has maintained his own claim since fleeing King's Landing.