Justin Theroux will be going villainous for David Gordon Green's Your Highness.
He's signed on to play Leezar, an evil wizard who kidnaps a princess (Zooey Deschanel, below) and jolts a lazy prince (Danny McBride) out of his arrogance to try to rescue her.
With James Franco also aboard as McBride's more heroic brother and Natalie Portman's as another sexy princess, Green is filming the comedy in Ireland right now.
Theroux, who has been usually been known as an actor, has also been spending time as a writer, having had a hand in the script for Tropic Thunder and scribbling the screenplay for Iron Man 2.
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