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