Do you want to compare Lex Luthor with Supergirl? Discover the powers, weakness & weapons of Lex Luthor and Supergirl from Lex Luthor Biography and Supergirl Biography. Find out all about Lex Luthor and Supergirl.# Check out how is Lex Luthor unique and distinct from Supergirl. Discover their love interest, sidekicks, family tree and the movies and games list in which Lex Luthor and Supergirl have appeared. Find out everything about them here!