Are any story mode characters playable in gta online?

Grand Theft Auto Online is a standalone multiplayer component of Grand Theft Auto V that launched in 2013. The game does not allow players to use Michael, Trevor, or Franklin as playable characters in Online mode. Instead, players create and customize their own silent protagonist, who serves as the default avatar for all Online activities. While story mode characters may appear as NPCs or in specific crossover events, they cannot be selected or controlled during Online gameplay. This design choice maintains a separation between the single-player narrative and the multiplayer experience, ensuring that Online mode operates with its own distinct character progression system.