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Klaus, 'The Vampire Diaries'
Who: Joseph Morgan
What: Hybrid original werepire vampwolf thing. He's scary.
Powers: All the powers, ever. Including but not limited to compelling vampires and humans to do what he wants, turning into a wolf whenever he pleases (he don't need no stinkin' full moon), and sneaking into hot history teachers at school dances. That... sounds dirtier than it was.
Quote: "You betrayed me and fled England before I could give you the details, Katerina. But I did find your birthplace. And I slaughtered your family. So I guess we're cool."