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