Are the original gta v protagonists available in gta online after updates?

Grand Theft Auto V was developed by Rockstar Games and released in September 2013, with subsequent releases on additional platforms. The game features three main protagonists as part of its single-player story campaign. However, the verified evidence available does not address whether these original protagonists are accessible in the online multiplayer component of the game, known as GTA Online. GTA Online is a separate mode that typically allows players to create and customize their own characters rather than assuming the roles of the main story protagonists. Since the evidence source focuses on development history and release dates without mentioning character availability in the online mode, this specific question cannot be answered with confidence based solely on the provided information.