Smallville characters discovered that Clark Kent (Tom Welling) was Superman, an alien with super powers, at different times during the show's run.

Add Yahoo as a preferred source to see more of our stories on Google. Uncover the hidden meanings and emotional impact behind Smallville's unforgettable final moments in this insightful breakdown.

This classic CW show offers a timeless example of how to tell compelling, long-lasting stories in the superhero genre.