Are there any returning characters from gta v story mode in gta online?

The Wikipedia excerpt describes Grand Theft Auto as a series with open-world gameplay and mission-based progression but does not address specific character appearances in GTA Online or crossover details between story mode and online mode. Without additional verified sources confirming character returns or online mode content, no definitive answer can be provided based on the evidence given. Rockstar Games has historically updated GTA Online post-launch, but such details fall outside the scope of the provided source.