The Mad Island Gang is a small gang that makes an appearance in Grand Theft Auto 2. Their only turf is in Mad Island. Everytime the player is spotted by the gang they automatically attack, regardless of how much respect the player has. They also play no part in the game. The gang's character model is identical to that of the Rednecks, leading some to believe that after the death of their leader, Billy Bob Bean, during the Residential portion of the game, that the gang relocated to Mad Island. This is further supported by dialogue during a mission briefing that mentions that Mad Island is Redneck territory.
Mad Island is not available on the PlayStation version of GTA2, and, as a result, the Mad Island Gang isn't in the PlayStation version, either.