There are several fan theories about the future of different characters in various TV shows, movies, and books. For example, in the Game of Thrones series, there are theories that suggest Daenerys Targaryen will ultimately end up on the Iron Throne or that Jon Snow will play a crucial role in the final battle against the White Walkers. In the Harry Potter series, fans have theorized about what the future holds for characters like Harry, Hermione, and Ron after the events of the books. These theories range from potential career paths to romantic relationships and even the possibility of a new dark wizard rising to power. Ultimately, fan theories can vary widely and offer unique perspectives on the potential futures of beloved characters.