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