Darth Vader, Star Wars Trilogy
You can't stand them, but you can't take your eyes off them either. They're the villains who are so bad they make the movies they star in oh-so-good.
Every bad guy knows to wear black. But, like a true fashionista, Darth Vader knows how the details (a cape and a mask!) set you apart. He can choke you half to death from clear across the room. And, he has no problem cutting your hand off right before telling you you're his son. Not to mention the breathing. Did we mention the breathing?