Tom Welling Clark Kent Actor Michael Rosenbaum Lex Luthor Actor Kristin Kreuk Lana Lang Actor Sam Jones III Pete Ross Actor Allison Mack Chloe Sullivan Actor John Schneider Jonathan Kent Actor Annette O'Toole Martha Kent Actor Eric Johnson Whitney Fordman Actor Amy Adams Jodi Melville Guest Star Sarah-Jane Redmond Nell Potter Guest Star Malcolm Stewart Mr. Melville Guest Star Joe Morton Dr. Steven Hamilton Guest Star Jeff Seymour Dr. Vargas Guest Star Alfred Gough Executive Producer Miles Millar Executive Producer Philip Sgriccia Director Michael Green Writer