What are the three protagonists in gta v story mode?

The verified evidence discusses the development and release history of Grand Theft Auto V, including its release dates across various platforms and the collaboration between Rockstar North and other international studios. While it confirms that GTA V is a spiritual successor to earlier Rockstar titles like Red Dead Redemption and Max Payne 3, it does not provide details about the game's narrative structure or the identities of its protagonists. For information on the three protagonists, additional sources detailing the game's story or characters would be required.