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