According to VancouverFilm.Net, actor Brian Austin "90210" Green will return as 'Metallo', the villain with the 'kryptonite'-infused heart, for 'Episode 18' of the Vancouver-lensed 'Superman' TV series Smallville.Green's character first appeared in the Smallville Season 9 premiere as journalist 'John Corbin', aka 'Metallo', who was killed after accidentally ripping out his heart, trying to destroy 'Clark Kent' (Tom Welling).In the show, 'Dr. Emil' (Alessandro Juliani) said Corbin had become 'more machine than man', opening up the possibility of a 'cyborg' return.The 'Metallo' episode will air Spring 2010.Click the images to enlarge and Sneak Peek Smallville...