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