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