Apollo might be the betrayed god. He could have been tricked by another god into betraying Percy. For example, Apollo might have been promised more power or a higher status among the gods if he turned against Percy. But then he realizes too late that he's been used and that he's actually betrayed someone who could have been an ally.
Well, it could be about Percy finding out that a god he trusted has betrayed him. Maybe this god has been using Percy for their own gain all along, like in battles against other gods or monsters. Percy would then have to deal with the shock and figure out how to either get revenge or make things right in the world of the gods.
It could be a jealous demigod. Maybe someone who has always been in Percy's shadow and decides to frame him for betraying the gods in order to get rid of him and gain more power and recognition among the demigod community.
One interesting plot could be Percy finding out that a so - called 'ally' of the gods has actually been manipulating him all along, leading to his perceived betrayal of the gods. Maybe this ally frames Percy for a crime against the gods, causing him to lose the trust of his friends and have to fight alone.
Well, it really depends on the specific fanfiction. There are countless fanfictions out there about Percy Jackson. Some authors might choose to elevate him to god status as a way to explore different aspects of his character, like how he would handle immortality or the responsibilities that come with being a god. They could also do it to create interesting new power dynamics within the Percy Jackson universe.
There's a chance that it could be a character from Percy's family. For example, a distant relative who has been corrupted by some dark magic. They might betray Percy for their own gain or because they are being controlled, and this betrayal could lead to Percy being killed.
The gods, especially Zeus. He has always been a bit suspicious of Percy. In fanfiction, he could easily be written as spreading lies about Percy to the other gods and demigods, leading to everyone turning against him. Also, some new characters introduced in fanfiction might be the ones who start the chain of events that lead to Percy's all - around betrayal.
One possible reason for Annabeth to betray Percy in fanfiction could be a misunderstanding. Maybe she was misled by false information about Percy's actions or intentions. For example, if someone spread rumors that Percy was secretly working against the demigods, Annabeth might believe it without getting the full story.
Another aspect could be that Percy is betrayed by a family member. For example, if it is revealed that a relative he trusted was working for an enemy all along. This would shatter Percy's world as family has always been important to him, and it would be a major plot point in the fanfiction, leading to his emotional and physical struggles.
He may also try to figure out what went wrong. Percy is a smart demigod, and he would likely not just accept the betrayal without trying to understand the cause. So, he might start investigating, talking to other characters who might have some insight, like the other demigods or even some minor gods who are friendly to him.