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