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