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