The Gammas are the minions of Bradley Uppercrust III, who cheats to win the Games. Tank becomes the new leader when Max and Goofy save him and overthrows Bradley. They are the tertiary antagonists in the 2000 Disney animated film, An Extremely Goofy Movie.
- One of the few named Gammas besides Bradley and Tank was Slouch (the one with the hat) because, despite not being more important than the other Gammas, had to be mentioned as part of their sports' team. Slouch also got a figure in the McDonald's collection based on the film.
- A tall and skinny member of the Gammas looks like a shaved version of Bigfoot from the previous film, due to having the same snout. A conspiracy theory that they're the same character exists, but Disney possibly just wanted to recycle footage.