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