Carl "CJ" Johnson is the main character in the video game series Grand Theft Auto: San Andreas. He is a young African American man who returns to his hometown of Los Santos after the murder of his mother. CJ seeks to restore his family's former glory and navigate the challenges of gang life, crime, and corruption in the city. Throughout the game, CJ develops relationships with various characters, including his family and friends, while also engaging in missions that involve driving, shooting, and strategy. His journey reflects themes of loyalty, ambition, and the struggle for power within the context of urban life.