A son of Athena could also work well. Athena is the goddess of wisdom, so her son would be intelligent and strategic. He could use his intelligence to plan ways to keep Percy out of trouble. He might be overprotective because he sees Percy's potential but also the naivete that comes with being young, and he wants to guide Percy in the right direction.
Another option for the main villain is a powerful sorceress who was once a friend of the gods but was betrayed. She has now turned to the dark side and wants to use Percy and his cousins as sacrifices in a dark ritual that would give her unlimited power. She has the ability to create illusions and control minds, which she uses to try and separate Percy and his cousins before she strikes.
Well, it could be that in the context of the fanfiction, Clarise has a deep understanding of the threats Percy faces. She may have witnessed some near - misses or had premonitions about his safety. So, she becomes overprotective to prevent any harm from coming to him. Also, it could be related to some unspoken bond or connection they share within the story's unique plot.
Maybe Clarisse has her own reasons. She might see Percy as someone who needs protection in the complex world of the fanfiction setting. It could be that she has a soft spot for him deep down, or she feels a sense of responsibility towards him for some unspoken events in the story.
Here's a plot. Percy and his cousins are invited to a special tournament among demigods from all over the world. But it turns out to be a trap set by an evil force that wants to use their combined powers for its own dark purposes. As they fight to escape, they learn more about their individual strengths and how to work together as a family. They also meet some interesting new characters from different mythologies during their struggle, and these new allies help them in unexpected ways to defeat the evil force and save the day.
One plotline could be the overprotective brother constantly trying to keep Percy out of dangerous quests. He might try to interfere with Chiron's plans for Percy, thinking he's too young or inexperienced. Another could be the brother getting into arguments with Percy's friends like Annabeth when he feels they're leading Percy into harm's way. And there could also be a plot where the brother himself gets involved in a quest to protect Percy and discovers his own hidden powers along the way.
One plot twist could be that they discover they are cousins much later in their respective adventures. For example, Percy might be on a quest in the Underworld and find out some long - hidden family secret that links him to Harry. Another could be that a seemingly friendly character turns out to be the one trying to keep them apart because their combined power is a threat to their evil plans.
One common theme is friendship. Percy's overprotectiveness often stems from his deep love for his friends. For example, he doesn't want to see them get hurt during battles or dangerous quests.
Sure. There are many creative fanfiction writers out there. Some might have them team up against a common enemy such as a new breed of mythical - magical hybrid creatures that are causing chaos in both their realms. It's a great way to merge the two universes and explore how their different skills and personalities interact while facing danger.