3. Tyrion Lannister
The wildly popular character who landed Peter Dinklage on the cover of Rolling Stone, the Imp is almost always the smartest guy in the room. But what matters is that he's almost always the most decent dude there, too, struggling to do the right thing despite his ruthless family and his own more than slightly sketchy nature. Can he make up for his most unforgivable lapse, the murder of his ex-girlfriend Shae, by helping the Mother of Dragons carve a path of freedom and conquest through the civilized world? Whatever the answer may be, this much is for certain: He's horny, he's funny and he's never less than fascinating.