His character might become more aloof. As a primordial god, he would be far removed from the normal world of demigods. He'd likely have a different perspective on things like friendship and loyalty. For example, he might not be as quick to jump into a fight for his friends as he used to be, because his new status would bring a different set of responsibilities.
Percy might struggle with his new identity. He has been a demigod for so long, and suddenly becoming a primordial god means he has to re - evaluate his place in the world. He may miss his old life, his friends, and the simplicity of being a demigod. Adjusting to the new powers and responsibilities is not going to be easy.
In fanfiction, if Percy Jackson becomes a primordial, it would be a huge shift in the narrative. He could be involved in the creation or destruction of new worlds. His personality might also change. He could become more detached, like many primordial beings are, as he now views the world from a much higher and more complex perspective. He might have to make decisions that affect the entire fabric of existence, and his actions would have consequences on a universal scale.
In this type of fanfiction, it's a really interesting concept. One possible scenario could be that Percy's death is a heroic sacrifice. Maybe he gives his life to save the world from an even greater threat than before. And when he becomes a god, he might use his new powers to bring about a new era of peace among the gods and demigods. His transformation could also mean changes in his relationships. For example, his friends might now have to view him in a different light, as a divine being rather than just a fellow demigod.
If Percy Jackson were to become a hidden god in fanfiction, it would likely involve a lot of mystery and suspense. He'd have to navigate a world where he couldn't reveal his true nature easily and could potentially uncover some dark secrets along the way.
His friends from Camp Half - Blood like Annabeth could be his allies. Annabeth is smart and strategic, and she would be able to offer valuable advice as Percy goes through the process of becoming a minor god.
Well, if Percy was born a primordial god, his personality might also be different. He would have a more god - like arrogance perhaps. His powers could include things like creating life or destroying it with a thought. In the fanfiction world, he could rewrite the rules of the gods. He wouldn't be bound by the same limitations as a demigod. He might even reshape Olympus according to his own vision, making it a more just or chaotic place depending on his mood.
As the god of fate, Percy has to deal with the chaos that can result from interfering with fate. Even a small change in one person's fate can have far - reaching consequences. He also has to be constantly vigilant against those who would try to manipulate him into changing fates for their own gain. The balance between justice and mercy in his decisions regarding fate is another big challenge. He can't be too lenient or too harsh, and finding that middle ground while dealing with the vastness of all the fates in the world is an extremely difficult task.
In such a fanfiction, Percy might gain the power to manipulate time. He could go back in time to prevent disasters in the demigod world, like stopping Kronos from rising before. He might also be able to foresee future threats and prepare for them. For example, he could ensure the safety of Camp Half - Blood in advance against any upcoming attacks.