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 John Glover Lionel Luthor Guest Star Cameron Dye Sam Phelan Guest Star Sarah-Jane Redmond Nell Potter Guest Star Tom O'Brien Roger Nixon Guest Star Kelly Brook Victoria Hardwick Guest Star Robert Wisden Gabe Sullivan Guest Star Jason Connery Dominic Senatori Guest Star Joe Morton Dr. Steven Hamilton Guest Star Hiro Kanagawa Principal H. James Kwan Guest Star Mitchell Kosterman Sheriff Ethan Miller Guest Star Julian Christopher Dr. MacIntyre Guest Star Mark Gibbon Deputy Guest Star Alfred Gough Executive Producer, Writer Miles Millar Executive Producer, Writer Greg Beeman Director Doris Egan Writer Terrence O'Hara Director James Marshall Director James A. Contner Director David Carson Director D.J. Caruso Director Michael Green Writer Philip Levens Writer Mark Verheiden Writer Greg Walker Writer Chris Long Director Tim Schlattmann Writer Cherie Bennett Writer David Nutter Director Jeff Gottesfeld Writer