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