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