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