In his family relationships, Sally Jackson would be in for a big surprise. She would have to adjust to seeing her son as a daughter. Percy would have to deal with different family expectations as a girl. His relationship with Poseidon would also be different. Poseidon might be confused and perhaps less likely to immediately offer the same kind of support he did when Percy was a boy. And Percy's romantic interests, if any, would have to be re - evaluated. He might find himself attracted to different people or be the object of different types of attraction.
Percy's relationship with the male demigods would change significantly. Some might see him as a traitor for joining the Hunters. However, he would also gain new allies among the Hunters themselves. His relationship with Artemis would be that of a mentee and mentor at first, but as time goes on, it could develop into a more family - like bond. And his relationship with the gods would be different too, as he's now under Artemis's protection, which might make some gods view him in a new light.
His relationship with Annabeth would be really interesting. At first, Annabeth might be shocked and a bit unsure how to act. But they could also develop a deeper understanding of each other as Percy now experiences things as a girl. With his male friends, like Grover, there could be some awkwardness, but also a chance for them to see Percy in a new light and strengthen their bond in different ways.
His relationship with Annabeth would be different. She might have to get used to Percy being a pegasus. There could be some initial awkwardness, but also a deeper understanding as she sees him in a new form.
Perhaps Artemis is testing Percy in some way. By turning him into a girl, she wants to see if he can still be as brave and resourceful. The plot could involve Percy learning about the female experience among the demigods. He could discover new aspects of friendship with female characters who now see him as one of their own. And he has to figure out how to reverse the transformation while also dealing with the current challenges.
His relationship with Annabeth would likely become more complex. She might be a bit worried about Percy's new powers and what they could mean for his safety and their future together. But at the same time, she would be there to support him as always.
With his friends at Camp Half - Blood, Percy might become a bit of an outlier. His connection to Zeus through the blessing could make some of his friends who are more closely tied to Poseidon or other gods feel a bit uneasy. However, it could also earn him respect from those who admire Zeus' power. Percy would have to work hard to maintain his friendships while dealing with this new dynamic.
In a 'Percy Jackson Father of Chaos' fanfiction, Percy's relationships would be in upheaval. His friendship with Grover would face a test. Grover, who has always been Percy's loyal friend, would now have to deal with a Percy who is unpredictable at times. Percy might accidentally cause chaos that affects Grover's nature - related tasks. With the other demigods at Camp Half - Blood, Percy would become a sort of enigma. Some would look up to him as a new kind of hero, while others would be jealous of his new - found power. His relationship with the sea gods, like Poseidon, would also change. Poseidon might be proud that his son has such a powerful new role, but also worried about how Percy will use his powers and how it will reflect on the sea god's domain.
His relationship with Annabeth would change. She might be a bit jealous at first of Percy's new connection to Hecate. But then she would see how his new powers could be useful. They would have to learn to work together in a new way, with Percy having different abilities to bring to the table. His friendships with other demigods like Grover would also be different. Grover might be a bit in awe of Percy's new magical side. Percy would also have to form new relationships with the followers of Hecate, who might be very different from the demigods he's used to.
His relationship with Annabeth would be really interesting. If Percy is reincarnated as Theseus, he might be more headstrong in his decision - making, which could cause some friction with Annabeth who is used to the normal Percy. For example, in planning a mission, Percy (as Theseus) might make a bold move without consulting her first.
When it comes to his relationship with Hera herself, it would be complex. At first, Percy might be resentful or confused about being adopted by her. But as time goes on, he might start to understand her in a way no one else does. Hera could start to see Percy as a true son, and this could lead to a deep, if somewhat unusual, bond between them. Percy would have to balance this new relationship with his existing ones, and it could lead to some really interesting character development and story arcs.