High Quality Content by WIKIPEDIA articles! MacDonald "Mac" Gargan is a fictional character that appears in comic books published by Marvel Comics. During his career as a villain of Spider-Man`s, he originally appeared as the most well-known incarnation of Scorpion, bonded with the symbiote to become the third incarnation of Venom, and takes a serum to control the symbiote to pose as the third incarnation of Spider-Man.