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