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