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 Terence Stamp Jor-El Guest Voice Victoria Duffield Young Chloe Sullivan Guest Star Nicki Burke Nurse 1 Guest Star Robert Lawrenson Neurologist Guest Star Eby Luking Nurse 2 Guest Star Alfred Gough Executive Producer Miles Millar Executive Producer Kevin Fair Director Don Whitehead Writer Holly Henderson Writer