Intrigued to know about Harpoon friends & enemies? Check out the list of Harpoon enemies and rival teams that continue to trouble this Supervillain over the years. Along with the Harpoon enemies, he also has friends and group affiliations that help him fight against enemies and stand by his side in both good and bad times. From Harpoon Biography, along with list of Harpoon enemies, we also bring you the list of Harpoon friends and group affiliations. Check out all the elemental and medical weaknesses of Harpoon.