Scorpion is a Marvel Comics supervillain that appears an an enemy of Spider-Man. He later becomes a member of the Thunderbolts, and is later exposed to a Symbiote and becomes the third Venom as well as the first villain to take on the Spider-Man Mantle when being part of the Dark Avengers.
Macdonald "Mac" Gargan was a Private Eye hired by J. Jonah Jameson to find out how Peter Parker gets good pictures of Spider-Man. After many failed attempts, Scorpion was given a costume with a tail that made him look like a scorpion. Known as The Scorpion, he became an enemy of Spider-Man.