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