The Gammas are the villains of the film An Extremely Goofy Movie.
They were the winners of the X University Games since the creation of the ΜΜ brotherhood (pronounced "MuMu") to which they belong. Their leader is Upercrust Bradley III. They offered to Max join their team, but he refused, so they compete against him in games. After seeing that Goofy was good at skating, ofreciron will join him, and he accepted. But after he left the team and discovered that win because they cheat.