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