Lex, wonderfully brought to life by Michael ... he is the biggest fan of Lana and Clark's relationship, but as early as season 1, Smallville hints that he's interested in her.

In the season 7 finale of Smallville, titled Arctic, Lex Luthor discovers Clark Kent's secret. This is a turning point in the series because it changes their relationship from friendship to rivalry.

Wednesday and Smallville are both about young versions of famous, beloved characters and they also share showrunners.