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 Jesse Metcalfe Van McNulty Guest Star Camille Mitchell Sheriff Nancy Adams Guest Star Gary Hudson FBI Agent Frank Loder Guest Star Lorena Gale Dr. Claire Foster Guest Star Terence Stamp Jor-El Guest Voice Tim Henry Private Investigator Mason Guest Star Martin Cummins Dr. Lawrence Garner Guest Star Daniel Bacon Agent Tobin Guest Star Françoise Yip Dr. Lia Teng Guest Star Kendall Cross Jessica Kent Guest Star Brock Johnson Edge's Blonde Thug Guest Star Alfred Gough Executive Producer, Writer Miles Millar Executive Producer, Writer Greg Beeman Director Terrence O'Hara Director James Marshall Director Jeannot Szwarc Director Ken Biller Writer, Director Michael Kattleman Director Thomas J. Wright Director Brian Wayne Peterson Writer Todd Slavkin Writer Mark Verheiden Writer Drew Z. Greenberg Writer Holly Harold Writer Kenneth Horton Writer Kelly Souders Writer Darren Swimmer Writer