GMAC is a former Lieutenant in the Vice branch of the Tri-City Bay Police Department. He justifies his retirement with the corruption of his employer and his need for illegal street racing. He is also the leader of a crew based in Sunset Hills. GMAC first appears in the Job "Tri-City Tournament" as the race organizer. He is described by the player's handler - Chase Linh - that he was "fired from the TCBPD for his brutal and sadistic tactics". GMAC gives the player a choice of pink slips to the other racers' cars.