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