A really interesting take on this would be if Percy's time travel was a result of Chronos trying to manipulate the future. Percy could be sent to different time periods where Chronos has some sort of influence. In each time period, Percy discovers more about Chronos' plans and how they connect to his own present. He has to gather clues from different eras to finally be able to stop Chronos' grand scheme. This would involve Percy learning about different cultures and mythologies throughout time.
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.
Well, in a fanfiction about Percy Jackson time traveling and Chronos, Percy might be sent back in time by some mysterious force related to Chronos. He could find himself in the middle of the Titanomachy. There, he has to figure out how to survive while also trying not to change history too much. He might meet young versions of the gods and form unexpected alliances.
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.
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 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.
In a Percy Jackson time travel harem fanfiction, Percy could time - travel to a time when the Titans were still ruling. He befriends some female Titans who are intrigued by his modern - day demigod ways. Along with some female demigods from different points in history that he also meets during his travels, they form an unlikely group. Their main goal could be to stop a future threat that Percy knows about from his own time, but they also have to deal with the complex relationships within the harem.
One idea could be that Percy and Artemis travel back to the time of the Titans' rule. They could try to find a way to prevent the Titans from ever rising, which would change the entire future of the demigod world. Maybe they meet young versions of the gods and have to convince them to work together against a common threat that the Titans pose even before the first war.
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 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 interesting plot idea could be Percy traveling back in time to the era when the gods first came to power. He could witness the creation of the Olympian council and get involved in the early power struggles among the gods. Another idea is that a god sends Percy on a time - travel mission to fix a mistake in the past that is now threatening the present world of demigods. For example, if a powerful magical artifact was lost in the past and its absence is causing chaos in the present.
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.