Tom Welling Clark Kent Actor Kristin Kreuk Lana Lang Actor Michael Rosenbaum Lex Luthor Actor Sam Jones III Pete Ross Actor Allison Mack Chloe Sullivan Actor John Schneider Jonathan Kent Actor Annette O'Toole Martha Kent Actor John Glover Lionel Luthor Actor Rob LaBelle Dr. Fredrick Walden Guest Star Emmanuelle Vaugier Dr. Helen Bryce Guest Star David James Lewis Dr. Marcus Guest Star Sandra Ferens Coroner Guest Star James Tsai Technician Guest Star Alfred Gough Executive Producer Miles Millar Executive Producer Terrence O'Hara Director Ken Biller Writer