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