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