- You may be looking for Sean "Sweet" Johnson, a character in GTA San Andreas.
Sean is a drug dealer in Grand Theft Auto: Chinatown Wars. He can be found by the lighthouse on the northern half of Colony Island after the player destroys all 100 security cameras and syncs their game to the Rockstar Games Social Club. Sean sells drugs for approximately half their average street value, enabling the player to make large profits.
After the mission Salt in the Wound, Huang Lee receives an e-mail informing him of the presence of the two Lions of Fo. This email was addressed from a 'Sean', possibly the same one.