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