He'd probably be more aware of his appearance. Instead of just being a scruffy, normal - looking demigod, he might take more care in how he presents himself. He could also be more charming without really trying, which might get him into trouble sometimes as people might misinterpret his intentions.
If Percy were the son of Aphrodite, his confidence would likely take on a new dimension. He'd be confident not just in his combat abilities but also in his charm and social skills. This could lead to him being more of a leader in a different way. Instead of leading through strength and strategy like he does as Poseidon's son, he'd lead through charisma and the ability to bring people together. But he'd also have to deal with the jealousy of others who might see his Aphrodite - given gifts as an unfair advantage. And his view of the world would change. He'd see beauty and love as important aspects of the demigod world that he might have overlooked before, and this new perspective could shape his decisions and actions in many different and interesting ways.
Percy would likely have a different set of powers. Instead of his usual water - based powers, he might have powers related to love and attraction. This could make his relationships with other characters very different. For example, he could use his powers to influence the emotions of his friends or enemies. However, he might also struggle with the idea of using these powers ethically. He's always been a fairly straightforward character, and having these more manipulative powers could cause him to question himself a lot more. Also, his relationship with Annabeth would be very different. He might use his powers on her without realizing it at first, and then have to deal with the consequences when she finds out.
Percy would probably become more in tune with emotions. He would be able to sense the feelings of those around him more acutely. This could make him more empathetic but also more vulnerable. His relationships would change significantly. For example, his relationship with his mother, Sally, might take on a new dimension as he discovers more about his divine heritage related to love. And his relationship with Annabeth would be tested as he has to balance his newfound charm and emotional awareness with their existing bond.
If Percy was the son of Aphrodite, it would make the story much more about relationships and less about the traditional battles. His storylines could involve using his charm to defuse situations rather than his sword. He might be more focused on bringing people together or causing romantic chaos. Also, his connection to the other gods would change. Gods who have a different view of Aphrodite might treat Percy differently. He could be a target for jealousy from some gods' children who feel he has an unfair advantage in the love department.
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.
Percy would likely become more studious. Since Athena values knowledge, he would be more interested in learning about history, magic, and other aspects of the demigod world. He might spend more time in the library at Camp Half - Blood, much to the surprise of his friends. His relationships with others would also change. He could be more aloof at first as he tries to adapt to his new role, but as he grows into it, he would form deeper, more intellectual connections with those around him.
He'd probably be more morally strict. In the original Percy Jackson stories, he has a more fluid sense of right and wrong based on Greek mythology. But if he were the son of the Christian God, he'd likely adhere more to the Ten Commandments type of moral code. For example, he might be less likely to use deception in his battles.
Percy's relationship with the other campers at Camp Half - Blood would be a rollercoaster. The children of Poseidon might feel a bit betrayed or confused, as they thought Percy was one of their own. However, Percy could use his new status to bridge gaps between different cabins. For example, he could work with the children of Aphrodite to improve relationships in the camp, since Hera has some connection to love and relationships in a different way than Aphrodite. With the gods, his relationship with Zeus would be extremely strained, given Zeus's past issues with Hera. But he might find new allies among the gods who are friendly with Hera, like Hephaestus. Overall, Percy's relationships would be a mix of challenges and new opportunities.
If Percy was the son of Typhon, his character would go through a major transformation. He'd have to deal with the stigma of being related to one of the most feared monsters in Greek mythology. Initially, he might be ostracized by some of his friends. This would make him more withdrawn, but also more determined to prove himself. He'd start to explore the powers that come with his new heritage, which could be both a curse and a blessing. As he masters these powers, he might gain a new confidence, but also have to constantly battle the urge to use them for darker purposes. His relationships with the gods would also change significantly. The Olympians would be more wary of him, and he'd have to find a way to either earn their trust or defy them.
Well, if Percy was the son of Loki in a fanfiction, it would completely turn the Percy Jackson storyline upside down. Percy's powers would likely be a mix of his demigod abilities and Loki's trickery. His relationships with the other characters would also change. For example, his loyalty to Camp Half - Blood might be questioned as Loki is known for his duplicity. He could have a more mischievous side and might not be as straightforward in his actions as he is in the original stories.
In fanfiction, the Son of Aphrodite could also have an interesting love life. Since Aphrodite is the goddess of love, her son might have a complex relationship with love. He could be a hopeless romantic, constantly falling in and out of love. Or he might be cynical about love, having seen the chaos it can cause, especially among the demigods.
His relationship with Annabeth would likely become more complicated. She might be a bit jealous of Percy's new connection to Aphrodite, as Aphrodite represents love and beauty, and Annabeth might feel a bit insecure. With Grover, Grover might be a bit more protective of Percy, seeing that Percy is now part of a different 'clan' so to speak. And the other demigods might either look up to him more or be more envious, depending on their personalities." ,"Answer2": "Well, Percy's relationship with his enemies would also be different. Enemies might underestimate him at first, thinking he's just a pretty face now that he's associated with Aphrodite. But then they'd be in for a shock when he still shows his tough combat skills. His relationship with the gods would also shift. Gods like Ares might view him with more disdain as he's now related to Aphrodite, while gods like Hermes might be more curious about this new development. His friendships with the other campers would have to adapt too. Some might start asking him for advice on love matters, which he may not be very good at in the beginning." ,"Answer3": "His relationship with his mother would be an interesting aspect. His mother might be a bit worried about Percy being adopted by Aphrodite, fearing that he'll be drawn into a world of vanity and shallow relationships. With the new demigods arriving at camp, Percy would be seen in a different light. They might approach him more often for help with matters related to Aphrodite's domain, like love spells or beauty tips (even though Percy might not know much about those). His relationship with Chiron could also change, as Chiron might have different expectations of Percy now that he has this new connection, and Percy would have to prove that he's still the same heroic Percy at heart.