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