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