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