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