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