When Percy Jackson becomes the Titan King in fanfiction, his character would change in several ways. He would become more calculating, having to deal with the political intrigue among the Titans. He may also become more isolated as some of his old friends might not trust him immediately. His sense of loyalty would be tested as he has to balance his new responsibilities with his past relationships. Also, he would likely gain a new sense of confidence that comes with such great power.
He might become more authoritative. As the Titan King, Percy would have to command respect and make tough decisions. He can't be as carefree as he was before.
If Percy becomes the Titan King in fanfiction, his character would transform significantly. He would have to take on a more regal and distant demeanor at times. His focus would shift from just surviving and helping his friends to ruling an entire group of powerful beings. He would have to be more diplomatic, less impulsive. His relationships with the gods would become more complex. He would no longer be just a hero fighting against the Titans but the leader of them, and this would force him to view the world from a different perspective. His values might be challenged as he tries to find a way to lead the Titans in a way that doesn't repeat the mistakes of the past.
In this fanfiction scenario, Percy's character change would be quite drastic. He would probably start to embrace the more chaotic and power - centric nature of the Titans. His relationships would be in turmoil. For example, his relationship with Annabeth would be severely tested. He might not value the same things he once did, like friendship and the protection of the camp. His new Titan - influenced self could be more self - serving, seeking to gain as much power as possible and not caring about the consequences for those around him. His values would be realigned with the Titans' more cut - throat approach to power and survival.
His character would become more detached. Percy is usually very involved and emotional in his relationships, but as Death, he would need to be more aloof. He can't be too attached to the living as his new role demands a certain level of impartiality towards life and death.
His social circle would expand. He'd meet new people in the music industry, from producers to fellow singers. His daily routine would shift from demigod training to rehearsals and recording sessions.
His personality might become more reserved. As a Cullen, he'd have to fit into their more subdued lifestyle. He might lose some of his brashness.
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.
His story changes a great deal. He can't rely on his powers to solve problems. For instance, in battles, he'd have to use normal weapons or his intellect. His relationship with Annabeth would also be different. They might not have the same kind of adventures together. He'd be more in danger from the mythical world since he's no longer a powerful demigod.
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.
He might become more solemn. As a god, he has more responsibilities. So, he can't be as carefree as he was as a demigod. He would need to think about the big picture all the time.
He would likely become more introspective. With the ability to see through time, he'd reflect on his past actions more deeply.
His character would likely become more hardened. The military life is tough and Percy would have to face a lot of difficult situations. He might become less trusting at first as he'd be in a new environment full of strangers. But over time, he could learn to rely on his new comrades. Also, his sense of responsibility would expand from just protecting his friends and family to protecting his entire unit and his country in the context of the fanfiction.