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