You may be looking for Adam Biggs, Adam Dimayev, Adam Tedman or Adam First, characters from the GTA series, or Adam Cochrane, a person who helped produce some GTA games.

Adam is a character and drug dealer in Grand Theft Auto: Chinatown Wars. He sells drugs out of Willis, Dukes, Liberty City and e-mails Huang Lee, the game's protagonist, regarding special deals when selling and buying drugs.