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