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