When Clark wonders if the world would be better off if he never came to Smallville, Jor-El shows him what life would have been like if he had never existed.
Tom Welling
Clark Kent
Kristin Kreuk
Lana Lang
Erica Durance
Lois Lane
Michael Rosenbaum
Lex Luthor
Allison Mack
Chloe Sullivan
John Glover
Lionel Luthor
Laura Vandervoort
Kara Kent
Aaron Ashmore
Jimmy Olsen
Camille Mitchell
Sheriff Nancy Adams
Brett Dier
Alternate Clark Kent
Carlo Marks
Chloe's fiance
James Marsters
Milton Fine
Terence Stamp
Jor-El (voice)
