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