Percy would probably become more arrogant at first. But as he faces challenges related to his new identity, he'd learn humility. His loyalty to his friends might be tested as Zeus could demand things that conflict with his friends' interests. He'd also have to deal with the expectations of being the son of the king of the gods, which would shape his character in ways different from when he was just Poseidon's son.
Since he's the son of Zeus, Percy would have a different kind of pressure on him. He'd be expected to uphold the reputation of Zeus, which could make him more cautious in his actions. His character would develop a more regal side, but he'd also have to struggle with the idea that his newfound status might isolate him from his old friends. He'd need to find a balance between his old self and the new identity as Zeus's son, and this journey of self - discovery would greatly change his character.
Percy would likely become more regal and proud. Since Hera is associated with royalty, he might develop a more refined and authoritative personality. He could also become more calculating, as Hera is known for her scheming. For example, he might think more about long - term plans rather than just reacting impulsively like he used to.
Percy's self - identity would be completely shaken. He's always known himself as Poseidon's son, so being a son of Ares would force him to re - evaluate who he is. He might struggle with feelings of anger and a desire for power that he didn't have before. This could lead to a darker path for him at first, but through various experiences, he could learn to control these new aspects of himself and become a more complex and interesting character.
Percy would likely be more brooding. Since Iapetus was often seen as a rather serious figure in mythology, Percy might inherit some of that solemnity. He could be more withdrawn, thinking deeply about his new identity.
In the fanfiction, Percy's relationship with Zeus may develop gradually. Zeus, being a powerful and often aloof figure, might initially be distant from Percy. But as Percy shows his courage and abilities, Zeus could start to take a closer interest. This might lead to Zeus mentoring Percy in some ways, teaching him about godly powers and responsibilities.
Percy would likely become more devious. Growing up with Loki as an adoptive father, he'd be exposed to Loki's tricks and lies. So instead of his straightforward, if sometimes impulsive, nature in the original Percy Jackson stories, he might think more about the different angles of a situation before acting.
Percy would likely be more ruthless. Gaea's influence might make him less hesitant to use force or manipulation to get what he wants. For instance, he might not be as concerned about the well - being of mortals as he was in the original story.
Percy would likely be more in tune with the concept of home and family. Since Hestia represents the hearth, Percy might be more nurturing and protective. He could develop a stronger sense of responsibility for the well - being of his friends as if they were his family.
In this fanfiction, Percy's character development would be quite interesting. He would start to value the concept of sisterhood that the hunters have, even though he's not a girl. This could make him more protective of the group. His fighting style might change too, as he'd learn new techniques from the hunters. Percy would also develop a deeper sense of loyalty to Artemis, which would influence his decision - making. He might become more of a thinker rather than just a doer, as he'd have to consider the implications of his actions on the hunters and Artemis's reputation.
Percy as the son of Zeus would likely develop a different moral compass. Zeus has different values compared to Poseidon. Percy might be more concerned with upholding the laws and order of Olympus in a more strict sense. He'd also have to deal with the politics of being in Zeus' family, which could make him more cynical or calculating at times. However, his fundamental goodness might still shine through as he tries to find a balance between Zeus' expectations and his own sense of right and wrong.
His character might become more confident, as being raised by Zeus would give him a sense of specialness. He could also be more authoritative.