Athena is Annabeth's mother. Although she generally has some level of trust in Annabeth, she might still spy on them. She could be worried about how Percy's actions might influence Annabeth, especially when it comes to decisions that could affect their future or the future of the demigods. Also, she might want to ensure that Annabeth doesn't let her emotions for Percy cloud her judgment.
Aphrodite could also be one of the spying gods. Since she loves meddling in love affairs, and Percy and Annabeth's relationship is quite famous among the demigods. She might be spying to see how their relationship develops and perhaps add a little nudge here and there if she feels like it.
One possibility is that the gods are spying because they fear Percy and Annabeth might be planning something that could disrupt the balance between the mortal and divine worlds. For example, they could be working on a project that might give mortals too much power over the gods, so the gods want to keep an eye on them to stop it if necessary. Also, it could be that the gods are just being nosy as they are often interested in the affairs of their favorite demigods.
Obviously, Percy would be one of the main characters. And the gods who are spying on him, such as Zeus, Poseidon, or Athena, would also be main characters. They play important roles in the spying plot.
I think 'the gods spy on percy fanfiction' would likely involve the gods using their various powers to keep an eye on Percy. They could be using magic, or enlisting the help of other mythical creatures. This fanfiction might also show how Percy's friends get involved when they discover the spying, and the resulting conflicts or alliances.
Poseidon would probably be one of the main gods watching. Since Percy is his son, he would have a strong interest in his well - being during the fight.
In some fanfictions, if Percy and Annabeth became gods, they might bring new powers and perspectives to Olympus. Percy could use his water - controlling abilities in more divine ways, like creating entire new oceans or taming sea monsters on a grander scale. Annabeth, with her wisdom, could reshape the way the gods make decisions, bringing more logic and strategy to their councils.
The gorgons could be a likely villain. They might be lurking in the catacombs of Paris, waiting to turn Percy and Annabeth into stone. They could be after some powerful magic item that is hidden in the city.
I think Poseidon is a must - he's Percy's father, after all. Then there's Zeus, who likes to be in control and would want to see this baby who could grow to be a significant force. Apollo might come just for the fun of it, being the god of many things including prophecy, he might have some insights. And Artemis, as the goddess of the hunt, could also be there to see what all the fuss is about regarding baby Percy.
The gods reading Percy and Annabeth fanfiction would be a chaotic situation. Aphrodite would likely be all over it. Since she is the goddess of love, she would be interested in how the relationship between Percy and Annabeth is portrayed. She might even try to influence the fanfiction writers to make the relationship more romantic or passionate. Meanwhile, Ares might think it's all a waste of time and a sign of the weakness of mortals. He could be scornful of the whole concept. And the minor gods might see it as a chance to get some attention. If the fanfiction makes Percy and Annabeth interact with a minor god, that god might try to use it to boost their own status among the pantheon.
Obviously, Percy would be one of the main characters. And of course, the gods would play important roles too. Gods like Zeus, Poseidon, and Athena are likely to be there. Percy's friends from the demigod world, like Annabeth, might also make appearances.
Obviously, Percy Jackson himself. He's the one doing the pranking. Then, there would probably be the gods like Zeus, Poseidon, and Athena who are the targets of his pranks. His friends like Annabeth might also be involved, either helping Percy with the pranks or trying to stop him when they think he's going too far.