If Percy Jackson joined Kronos in a fanfic, the story would change drastically. Firstly, the power balance would shift in Kronos' favor. Percy is a very powerful demigod, and his skills and abilities would now be used against the Olympians and his former friends. The demigod community would be in chaos. His friends would be heartbroken and confused, and they would have to decide whether to try to save Percy or just focus on stopping Kronos. Also, the Olympians would likely view Percy as a major threat and might take more extreme measures against him and those associated with him.
The story would transform into a complex tale of betrayal and moral ambiguity. Percy joining Kronos means the traditional good - vs - evil dynamic is disrupted. His friends would no longer be able to trust him blindly. The Olympians would be in a state of panic, as Percy knows many of their secrets. Kronos, on the other hand, would use Percy to his full potential, perhaps sending him on missions to undermine the Olympians from within. This would also affect the relationships between the different demigod camps. Some might side with Percy, believing in his new cause, while others would firmly oppose him. The fanfic could explore how Percy's actions would ripple through the entire demigod world, causing upheaval and changing the fates of many characters.
The character development of Kronos is also important. Fanfic writers often explore his past and what led him to become the villain he is. They might give him more complex motives, like a desire for revenge that goes beyond just power. Also, the relationships between the characters, like Percy's relationship with his friends in the face of Kronos' threat, are key elements. In some fanfics, these relationships are tested and strengthened in different ways.
If Percy becomes influenced by Kronos in this fanfiction, his sense of morality would be greatly affected. He would probably lose his sense of right and wrong which was a big part of his character before. His loyalty towards Camp Half - Blood and his friends would be in jeopardy. He might start to think that the ends justify the means, which is a very Kronos - like way of thinking. And he could become more aggressive and less patient, as Kronos was always in a hurry to regain his power and rule over the world.
In a fanfic scenario where Percy Jackson joins Kronos, it could be a very interesting exploration of the 'what - ifs'. Percy has a strong sense of justice, so for him to side with Kronos, Kronos must have presented a very convincing argument. It could be that Kronos showed Percy a future where the demigods are constantly oppressed by the Olympians. However, this would also mean Percy has to go against his instincts and the relationships he has built. His friends like Annabeth would be in shock and try to bring him back to the right side. This could lead to some intense battles not only between the demigods and Kronos' forces but also within Percy himself as he struggles with his new allegiance.
Percy is the central figure, no doubt. But also, there could be other characters like Grover. Grover would be in a difficult position as Percy's friend. He would want to support Percy but also be cautious because of Percy's connection to Kronos. Additionally, some new characters might be introduced, perhaps other children of Kronos or characters from Kronos' past who have a role to play in Percy's story.
The main character is surely Percy Jackson. But in this 'son of kronos percy jackson fanfic', new characters might be introduced that are related to Kronos' side of the story. However, the classic characters like Annabeth Chase are bound to be there too. She would be crucial in Percy's journey as she often is in the original stories. Grover Underwood, Percy's satyr friend, would also be a mainstay. His loyalty and friendship with Percy would be tested and explored in this new narrative where Percy has this unexpected connection to Kronos.
One great Kronos fanfiction could be about his backstory before he turned evil. Maybe it explores his relationship with the other Titans and what led him to start the war against the Olympians.
In fanfiction, Kronos's role is not just limited to being a villain. Sometimes, he can be a catalyst for character development among the demigods. His actions force the heroes to become stronger, both physically and mentally. For instance, his threat might make Percy Jackson more determined to master his powers. Also, Kronos can be used to introduce new plot elements, like a new weapon or a magical item that has the power to stop him.
Percy would likely become more conflicted. His previous identity as the son of Poseidon shaped his values and actions. But as the son of Kronos and Rhea, he'd have to reevaluate everything. He might become more cautious, as he now represents a more controversial lineage.
One interesting plot could be Percy's internal struggle with his new identity as the child of Kronos. He might battle against the dark urges that come with his heritage while trying to stay true to his friends at Camp Half - Blood. Another plot could involve Percy facing off against the other demigods who see him as a threat due to his relation to Kronos.
A fanfic that I've come across is 'Kronos' Last Stand'. It details the final battle with Kronos in a more detailed and brutal way than the original books. It also gives more backstory to Kronos' minions. Additionally, 'In the Shadow of Kronos' is a great read. It focuses on the psychological impact Kronos has on the demigods, not just the physical threat he poses.