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