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