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