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