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