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