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