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