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