After the perfect casting of Geoffrey Rush as Tomar-Re in Green Lantern, we were waiting to see if Kilowog would receive an equally perfect voice. And he has. Harry Knowles over at AICN has learned that Michael Clarke Duncan has been cast as the voice of Kilowog. That’s just absolutely perfect casting, because if they were to somehow do a live action Kilowog; he’d still be the perfect person the play him. After the awesome Wondercon footage, and the recent voice casting news; Green Lantern keeps looking better and better.