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