Well, in this fanfiction, Jason's jealousy could be shown through his actions and words. He may make snide remarks about Percy's power. Maybe he tries to undermine Percy's achievements. He could also be seen avoiding Percy because seeing him use his powers makes Jason feel inferior. Like when they are on a quest together, Jason might not cooperate as well as he should just because he's envious.
In the fanfiction, Jason's jealousy of Percy's power could be quite complex. He might start comparing himself to Percy constantly in his mind. Jason, being a proud character, would find it hard to accept that Percy has such strong and unique powers. His jealousy could lead to him making rash decisions. For instance, he might take on a dangerous task alone just to prove that he is as good as Percy, without considering the consequences. This could put himself and others in danger. Also, his jealousy might cause a rift in their friendship, as he becomes more distant and less friendly towards Percy, which in turn affects the dynamic of the whole group they are part of.
Jason might show his jealousy through subtle actions like avoiding Percy during group activities or making snide remarks about Percy's powers when others are around.
In the fanfiction, if there is a prophecy that seems to favor Percy's power. For example, a prophecy about a great danger that only someone with Percy's power can defeat. Everyone starts to look at Percy as the hero and Jason feels pushed to the side. He has his own skills and abilities, but they seem overshadowed by Percy's power. This could make Jason start to feel jealous. Additionally, if Percy is able to make friends or gain allies more easily because of his power, Jason, who might be struggling in the social aspect, could also become jealous.
One reason could be Percy's popularity. Percy has many friends and is well - liked in the demigod community. Jason might feel overshadowed by Percy's charisma and the attention he gets.
Well, in the fanfiction, Jason's jealousy might manifest in his actions towards Percy. He could try to undermine Percy's achievements subtly. Maybe when Percy is praised for using his power to save someone, Jason would make a snide comment like 'It was just luck that he had that power'. Also, he might start to overwork himself to try and prove that he is just as good as Percy without the same power, which could lead to him making mistakes or getting into dangerous situations.
Well, it might be that Percy has a more carefree attitude in some ways. He doesn't always follow the rules strictly and still manages to come out on top. Jason, who is more of a rule - follower and leader type, might envy Percy's ability to bend the rules and get away with it. Plus, Percy has a closer connection to Camp Half - Blood which has been his home for a long time, while Jason has to adjust to this new place and community, seeing Percy so well - integrated can make him jealous.
One reason could be Jason's popularity. Maybe Jason is getting more attention from their peers or the gods, which makes Percy jealous. Another might be related to a girl they both like. If the girl shows more interest in Jason, Percy could feel jealous.
Well, it could be that in the fanfiction, Percy and Thalia are both really popular and well - liked among their peers. Jason, on the other hand, might feel overshadowed by them. He's jealous because they seem to get all the attention and admiration, while he feels like he has to struggle more to be noticed.
Jason might show his jealousy by being overly critical of Percy. He could nitpick at Percy's actions or decisions during quests. For example, if Percy takes a risk during a battle, Jason might comment on how irresponsible it was, while secretly he's just jealous of Percy's courage to take risks.
In the fanfic, it could be that Percy and Thalia have a certain level of trust and understanding that Jason lacks with either of them. For example, they might communicate in a way that Jason wishes he could with them. Percy's relationship with the gods, especially Poseidon, and Thalia's connection to Zeus might make them a more formidable and enviable pair in Jason's eyes. He may be jealous of the power dynamics and the way they interact within the story.
Jason's jealousy might initially make him act out in negative ways. He could be bitter towards Percy and Thalia, which would isolate him from them and others. But as the story progresses, he might realize that his jealousy is unfounded and start to change for the better, learning to be more confident in himself.