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