Matt is a 19 year old, who is a member of the Grove Street Collective.
Matt previously lived in Japan with his best friend Mello, who ran a branch of a form of the mafia/Yakuza. Matt was thought to be dead after a shootout with bodyguards of a high-profile celebrity in Japan, but he escaped on a cargo boat heading to California. Once Matt entered Los Santos, he healed his wounds and slowly but surely got into the drug-running game for cash, meeting Jack and Zac. Jack realized Matt's talents as a driver after LST attempted a drive-by downtown. Matt and Jack got away from it clean, and Jack made Matt his personal driver, as well as one of his standby goons.