In the fanfiction, Percy's possessiveness might also be demonstrated by his need to be included in all of Annabeth's plans. He may feel left out or threatened if she starts making plans with other people without him. He wants to be a part of everything she does, almost like he owns a part of her time and attention.
Well, it could be shown through her getting jealous easily when other girls interact with Percy. For example, if a new girl in the story tries to talk to Percy, Annabeth might give the girl a cold stare or quickly insert herself into the conversation.
Thalia might show her possessiveness by constantly trying to keep Percy to herself. For example, she could be overly protective when other characters get too close to Percy. She may insert herself into conversations or situations where Percy is involved, even when it's not really necessary.
In some cases, Athena's possessiveness could be demonstrated by her attempts to shape Percy into her ideal hero. She may offer him special training or knowledge, but with the underlying intention of making him more like her vision of a perfect demigod. This could put Percy in difficult situations where he has to balance her expectations with his own desires and the needs of his friends.
Love is a big reason. She loves Percy deeply and is afraid of losing him. In the world of the fanfiction, there could be many threats to their relationship, so she holds on tightly.
Hestia's possessiveness can shape the plot in many ways. It might lead to Percy being isolated from other characters who could be important to his development. This in turn can create a series of events where Percy has to either break free or come to terms with Hestia's possessive nature. Also, it could attract the attention of other powerful beings who either oppose or support Hestia's possessiveness, adding more twists to the plot.
Often, she becomes overly possessive. If she sees Percy talking to another girl, she'll quickly insert herself into the conversation. She might put her arm around Percy or give the other girl a look that clearly says 'he's mine'. This possessiveness is a clear sign of her jealousy in the Percy Jackson fanfiction world.
Percy may become more reserved. With Artemis being possessive, he might start to hold back his normal, outgoing nature. For example, he may not be as quick to jump into new adventures or make new friends.
Well, it could affect the plot in various ways. The gods' possessiveness might mean that Percy has limited freedom. He may constantly be under the watchful eyes of the gods, which restricts his actions. Also, it could lead to power struggles among the gods themselves, with Percy caught in the middle. Maybe one god tries to protect Percy from the others' possessive actions, adding more twists to the story.
It can create conflict. For example, if other characters don't like Jason's possessiveness, it can lead to arguments or even fights.
Well, in such fanfiction, Draco's possessiveness could show through his constantly trying to keep Harry within his sight. He may be overprotective and not want Harry to engage in any dangerous or potentially harmful activities without his presence. He might also be possessive about Harry's time, wanting Harry to spend most of it with him rather than on his own studies or Quidditch practice.