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