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