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