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