Tom Welling Clark Kent Actor Kristin Kreuk Lana Lang Actor Michael Rosenbaum Lex Luthor Actor Allison Mack Chloe Sullivan Actor John Glover Lionel Luthor Actor Erica Durance Lois Lane Actor Laura Vandervoort Kara Kent Actor Aaron Ashmore Jimmy Olsen Guest Star Dean Cain Curtis Knox, M.D. Guest Star Phil Morris John Jones Guest Star Jovanna Burke Sasha Woodman Guest Star Jason Poulsen Colin Guest Star Alfred Gough Executive Producer Miles Millar Executive Producer