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