Percy's view of the mortal world would expand. Being in the army, he'd see a different side of mortals - their teamwork, their sense of duty. He might also learn new skills like military strategy that could enhance his demigod fighting abilities. His loyalty might be tested as he has to balance his loyalty to his demigod friends and his new military comrades. And his sense of self - worth could change as he discovers new ways to contribute in a military setting.
His character could become more in tune with nature. The Hunt has a strong connection to nature, and Percy would likely pick up on that. He might also become more self - reliant as the Hunt often operates independently. His loyalty would be tested as he has to balance his old ties with Camp Half - Blood and his new life in the Hunt.
Harry's character would develop in many ways if he joined the army in fanfiction. He'd have to learn to trust his new comrades as much as he trusted his Hogwarts friends. His sense of justice would be put to the test in different scenarios. For example, in the wizarding world, he was fighting against pure evil in the form of Voldemort. In the army, the lines between good and bad might be more blurred. This would force him to think more deeply about what he's fighting for and make him a more complex and mature character.
Her character development could be quite complex. First, she'd have to adapt to the rules and values of the hunt. This might mean suppressing some of her more impulsive tendencies that Percy is known for. As she spends more time with the other hunters, she'll likely pick up new skills and ways of thinking. For example, she could learn new tracking methods or ways to communicate without words. Her view of the world may also change as she experiences the hunt. She may come to see the importance of the balance between the mortal world and the world of the gods in a new light, which could shape her actions and decisions in the future.
His relationship with his old friends from Camp Half - Blood would likely be strained. They might not understand his decision to join the Chaos Army and think he's turned his back on them. However, he could also make new friends within the Chaos Army who share his new goals and values.
His character could develop in terms of his understanding of the divine world. Since he's with a goddess, he'd get a closer look at how the gods operate, their politics, and their values. This would make him more aware of his place in the grand scheme of things, not just as a demigod but as someone with a connection to a powerful goddess. He might also become more diplomatic as he tries to navigate the complex relationships within the divine realm.
Percy's character would likely become more hardened. Living in Tartarus, he'd face constant danger and that would make him more cautious and strategic. His sense of survival would be enhanced.
Percy's character would evolve into a more solitary figure. As Chaos, he'd be in a realm where few can understand him. He might struggle with loneliness, yet at the same time, he'd be filled with a sense of purpose that is much grander than his previous quests. His loyalty would shift from his friends on Earth to the well - being of the entire universe.
If Percy were a speedster in fanfiction, his confidence would likely grow. He'd be able to get out of tough situations more easily, which would make him bolder in his actions.
On the other hand, Percy could become more of a revolutionary figure. His act of killing Zeus could inspire other demigods to stand up against the unjust ways of the gods, and Percy would have to step into a leadership role, which would force him to grow in terms of strategy and diplomacy.
Percy's development would be centered around survival and power. In Tartarus, it's all about being strong enough to endure. So he would be more focused on getting stronger. He might also be more isolated, as not many would understand his Tartarus - born nature. His relationships would be more difficult to form and maintain. He would have to learn to control his powers, which might be more closely related to the dark forces of Tartarus, without being consumed by them.