Are there any crossover characters between gta online and story mode?

Based on the available source, which discusses Marvel's Spider‑Man, there is no mention of characters appearing in both GTA Online and GTA story mode. Therefore, we cannot confirm that any crossover characters exist between the two game modes. The absence of such information in the provided evidence suggests that, as far as the documented data goes, the characters in GTA Online and the story mode remain separate. If further details become available, they would need to be verified against reliable sources.