In 1992, Kent Paul is managing this group; in the San Andreas Introduction film, Maccer and Paul are shown in a recording studio in England, Paul having just bought Maccer's contract. The two decide to try their luck in America, and the band travels to San Andreas.
Later in the year, the band, Kent Paul, and The Truth take peyote in the middle of the Las Venturas desert. Maccer and Paul wake up the next day to find that the rest of the band have disappeared. Five months later, the band members are found, and Maccer denies to the media that they were ever missing, but simply "on break".
The Gurning Chimps may remain active by the time of Grand Theft Auto: Liberty City Stories, which takes place in 1998 — Head Radio DJ Michael Hunt indicates Maccer vomited on his shoes when he was backstage at one of the band's concerts, although the time of this is not specified.