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