1. Lex Luthor (Michael Rosenbaum)
You saw this coming, right? Lex Luthor was Smallville’s most interesting figure for a long time, the friendship between the character and Clark being a smart move on the part of the producers in extending the lifespan of the show. At the start, we saw an altruistic, friendly Lex always trying to do the right thing, before ultimately becoming corrupted by his own power – we hope the character returns in season ten.
