Get ready for some eggplant-tinted villainy on Disney XD's The Avengers: Earth's Mightiest Heroes! Star Trek favorite Brent Spiner, fresh from his badass turn on Syfy's Warehouse 13, returns to the dark side as that great Marvel baddie the Purple Man (Sunday, Sept. 16, 11:30am/10:30c). The plot has Vision (Peter Jessop) waking up after undergoing a month of repairs, during which Iron Man (Eric Loomis) and the Avengers have taken over the Earth and established their own utopia. Or is this all the work of the mind-controlling Purple Man? TV Guide Magazine has an exclusive clip!