Tom Welling Clark Kent Actor Allison Mack Chloe Sullivan Actor Erica Durance Lois Lane Actor Aaron Ashmore Jimmy Olsen Actor Justin Hartley Oliver Queen Actor Sam Witwer Davis Bloome Actor Cassidy Freeman Tess Mercer Actor Alaina Huffman Dinah Lance, Black Canary Guest Star Kyle Gallner Bart Allen, Impulse Guest Star Ari Cohen Regan Matthews Guest Star Ryan Kennedy Rokk Krinn, Cosmic Boy Guest Star Mike Dopud Security Guard George Guest Star Dario Delacio Doomsday Guest Star Serge Houde Priest Guest Star Taya Clyne Little Girl Guest Star Alfred Gough Executive Producer Miles Millar Executive Producer James Marshall Director Brian Wayne Peterson Writer Kelly Souders Writer