14. Roose Bolton
I know what you're thinking: Who? But that's kind of the point with this quietly imposing Lord of the North. Right now, he's more or less a background character, like a minor capo or the boss of a New York family in an early-season Sopranos episode. But as the bearer of bad news and the devil on Robb Stark's shoulder, gently encouraging him to be just a little more brutal, he's poised to make an impact should the Starks survive.