Jeffrey Cross, known professionally as OG Loc, his artist name, is a character in the Grand Theft Auto series who appears as a main character, and later a minor antagonist in Grand Theft Auto: San Andreas.

Jeffrey grew up on Grove Street, where he became friends with several members of the Grove Street Families, including Sweet Johnson and Big Smoke. Jeffrey lacked the physical capability to join the Families, but was still enamoured of the gangster lifestyle. Sweet advised him to leave the ghetto and attend college, but Jeffrey was set on becoming a rapper. Sometime after the year 1987, he began going by the name “OG Loc”, and started committing petty crimes, mostly traffic violations. These criminal offences landed him in jail for a few weeks. While in jail, he built up his street credibility.

When Carl Johnson arrived back in Los Santos, OG Loc was still in prison. CJ accompanied Sweet and Smoke to the police station to pick him up, where CJ angered Loc by calling him Jeffrey. Loc immediately enlisted CJ’s help in killing Freddy, a member of Los Santos Vagos whom he claimed had “disrespected” him (Freddy had revealed that they had a consensual homosexual relationship while in prison). Loc was then ordered to work as a Burger Shot janitor by his parole officer, and in the process of attempting to become famous, ruined Madd Dogg’s career by having CJ steal his rhyme book and kill his manager (who called Loc whack). Despite the fact that Loc is a terrible rapper with a squeaky, scratchy voice, he slowly but surely makes a name for himself in the underground by using Madd Dogg’s stolen lyrics.

After the downfall of the Grove Street Families, Big Smoke chose to launder his drug money by granting Loc a record contract, making him rich and famous. Using Madd Dogg’s rhyme book, he recorded his first (and only) album Str8 From Tha Streetz, immediately paired with a clothing company, Loc-Down (a reference to his prison stint, complete with a handcuff logo) available at Victim. He was interviewed by Lazlow on WCTR. Despite mocking him in the past, Big Smoke goes on with the charade that OG Loc is a real gangster, and juxtaposes it with another falsehood that he (Smoke) is a philanthropist attempting to fight off the crack epidemic – “so either way, you can feel good about yourself listening to this music!”

After the recovery of both Madd Dogg and the Grove Street Families (in a partnership), OG Loc was chased down by Carl and Madd Dogg himself from the set of his music video in Flint County all the way to Blastin' Fools Records in Los Santos, and finally extorted for Madd Dogg’s rhyme book and royalties from his album. This is based on Vanilla Ice having been extorted by Suge Knight for a stolen song. Shortly after, his manager Big Smoke, was killed, and OG Loc did not return to the rap game. What happened to him afterwards is unknown.