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