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