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 Ian Somerhalder Adam Knight Guest Star Sarah Carter Alicia Baker Guest Star Lynda Boyd Mrs. Baker Guest Star Paul Perri John Baker Guest Star Françoise Yip Dr. Lia Teng Guest Star Camille Mitchell Sheriff Nancy Adams Guest Star Kate Robbins Teacher Guest Star Alfred Gough Executive Producer Miles Millar Executive Producer James Marshall Director Holly Harold Writer