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.
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.
Well, sometimes in fanfiction, his brother might be a mortal who discovers his demigod heritage later. This could add an interesting twist to the story as he has to adapt to the world of gods and monsters. Or it could be a long - lost half - brother from a different camp, like a son of Poseidon from another part of the world who was hidden away for some reason.
There's a fanfiction called 'Brotherhood in Camp Half - Blood'. In this story, Percy's new brother is introduced in a very dramatic way. The author does a great job of showing how the brother fits into the world of Percy Jackson, with lots of action and adventure sequences. It also explores the relationship between the two brothers in depth, like how they deal with the challenges together and support each other in the face of danger.
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.
In many fanfictions where Percy Jackson is Nico's brother, it creates a whole new dynamic in the story. It often leads to different interactions with other characters. For example, their relationship with Annabeth might change. Percy could be more protective of Nico, and Nico might feel more secure having Percy as a brother. It also gives room for exploring their family history in new ways, like how they deal with their demigod powers together and support each other in the face of various challenges in the demigod world.
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.
In a Big Time Rush overprotective brother fanfiction, the brother could be overprotective because of a past incident. Maybe his sibling got hurt during a small concert performance once. So, he hovers around, making sure everything from the stage setup to the security around his sibling is perfect. This could create some tension within the group as the others might think he's being too much, but in the end, they come to understand his motives.