VIDEO : 'Supergirl' Fans Know Who They Want Cast As Lex Luthor

CW's Supergirl is bringing on one of DC's most iconic villains in Lex Luthor, and fans seem to already know who they want to play the part. His name is Michael Rosenbaum.DC announced earlier today that Lex Luthor, who is one of if not the biggest nemesis to Superman. Luthor has not been a part ...