3. Tyrion Lannister
The fan-favorite 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, his brutal society, and his own more than slightly sketchy nature. He's horny, he's funny, and he's never less than fascinating.