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