Even old enemies of the demigod world, who see Percy and Jason as threats, could be the antagonists. They might use deception and betrayal as a way to weaken the demigod forces, knowing that Percy and Jason are important figures among them.
In many Percy, Nico, and Jason - related fanfictions, the idea of betrayal can vary greatly. It could be that in some stories Jason betrays Percy out of loyalty to a different group or a misunderstanding. For example, if there's a power struggle within a camp and Jason believes Percy's actions might endanger the whole camp, he might take actions that Percy perceives as betrayal. However, it could also be Nico who is betrayed by the other two if they accidentally expose his secrets that he's been keeping to protect himself and others.
Well, they could be betrayed by someone they trusted deeply, like a fellow demigod. Maybe this person spreads false rumors about them, leading to their isolation within the demigod community. The three of them would then have to struggle to clear their names and find out who really set them up.
Another theme could be revenge. In some of these fanfictions, the betrayed Percy or Jason might seek to get back at those who wronged them. This could involve elaborate plans and a display of newfound power or skills. For example, Percy might use his water - controlling abilities in unexpected ways to take revenge on those who betrayed him.
Percy might be angry at first. He's used to being a loyal friend, so betrayal would hit him hard. He'd probably try to find out the truth and clear his name. Jason, being a more diplomatic type, might initially be shocked and then try to reason with those who betrayed him. Nico, on the other hand, could retreat into himself. He has a more solitary nature, and the betrayal might make him even more withdrawn.
One possible reason could be jealousy among other characters. Maybe there are those who envy Percy's powers and leadership, Jason's status as a hero, or Nico's unique abilities. Another reason might be a misunderstanding. For example, they could be wrongly accused of a crime they didn't commit, which leads to others turning against them.
It could be an old enemy from their past, like a resurrected Titan or Giant. These powerful foes might manipulate Percy and Jason into betraying their friends as part of a grand plan to regain power or take revenge on the demigods.
In this fanfic, it could be that Percy and Jason are under the influence of a magical spell or a powerful charm. This influence makes them act against their normal moral compasses and betray their friends. The story could then focus on how their friends try to break the spell and bring them back to their side, while also dealing with the consequences of their betrayal.
Well, Percy has his water powers which are extremely versatile. He can control water in all forms, use it for defense and offense. For example, he can create huge waves to overpower enemies. Also, his connection to the sea is very deep and it gives him a constant source of power, which might make him stronger than Jason who mainly has wind and flight - related powers.
In some fanfictions, Jason might be jealous of Percy because Percy has a closer connection to certain characters. For example, if Percy has a special bond with Annabeth that Jason wishes he could have. Maybe Percy is more well - known among the demigods, and Jason, coming from a different camp, feels left out or envious of Percy's status.