One idea could be Percy accidentally travels back in time and encounters Chronos in his prime. Maybe he has to team up with some of the old - time demigods to stop Chronos from an early attempt at world domination. It would be full of action and adventure as Percy tries to use his modern skills in an ancient world.
Percy could change the past and accidentally create a new future. For example, if he stops Chronos from a certain event, it might have unforeseen consequences for the demigod world he knows. He might return to his own time to find that his friends are different or that Camp Half - Blood has changed drastically.
In many of these fanfictions, characters like Chiron, the centaur mentor, play important roles. Since Percy is now the son of Chronos, some of the Titans might also be common characters, either as allies or enemies depending on the plot. And of course, the gods of Olympus are likely to be involved as they have a connection to Percy's new identity.
Well, in some fanfictions, Percy as the son of Chronos discovers a hidden realm that exists outside of normal time. There, he meets ancient beings who knew his father before he became a villain. He has to learn from them to prevent a future apocalypse related to time manipulation.
If Percy becomes the Champion of Chronos, his relationship with his father Poseidon would be complex. Poseidon might try to free Percy from Chronos' influence. Percy's relationships with his fellow demigods would be full of suspicion. They would be constantly watching him to see if he shows signs of following Chronos' evil intentions. However, Percy could also use this new position to bring together characters who were previously at odds. For instance, he could broker a truce between two warring groups in the demigod world by showing them the greater threat of Chronos.
One great 'Time Travel Percy Jackson Fanfiction' is 'The Time - Traveling Demigod'. It has an exciting plot where Percy is sent back in time and has to deal with all kinds of challenges that change his understanding of his own world. The author does a great job of keeping Percy's character consistent while also showing how he grows through these new experiences.
One great 'Percy Jackson Time Travel Fanfiction' is 'Time Warped'. It takes Percy back to ancient Greece and he has to deal with all kinds of challenges that are different from his modern - day ones. He meets his ancient relatives and has to figure out how to get back to his own time without changing history too much.
One idea could be Percy having to travel through different time periods to collect artifacts that can stop Chronos' evil plans. He might visit ancient Greece and interact with the gods in their prime. Another could be Percy facing off against his past and future selves, who are being manipulated by Chronos.
In many Percy Jackson fanfictions, time travel often works through magical artifacts. For example, a special time - turning hourglass might be used. It could be a powerful object left behind by an ancient god or goddess.
To write a great 'Percy Jackson Time Travel Fanfiction', think about the consequences of time travel. If Percy changes something in the past, how will it affect the present and future? You can also add some unique twists. For instance, what if the time - travel device malfunctions and he keeps bouncing between different time periods? And don't forget to include the humor and adventure that are typical of the Percy Jackson series.