One interesting Percy Jackson delinquent fanfiction could be about Percy getting into trouble in the mortal world because he uses his powers in a way that violates the rules. For example, he might accidentally cause a scene while trying to stop a monster in a crowded place. Another could be a story where Percy teams up with some other 'delinquent' demigods to take on a new threat that the Camp Half - Blood authorities don't believe exists. They have to operate outside the normal rules to save the day.
One interesting fanfiction could be about Sally's early adventures before Percy was born. It might explore her relationship with Poseidon in more depth. Another could focus on a day in the life of Sally and Percy when they have a special family event, like a reunion with other demigods at Camp Half - Blood. And there are also fanfictions that rewrite certain events from the original series with a different perspective from Sally's point of view.
Obviously, Percy Jackson himself is often the central character in such fanfictions. His friends like Annabeth Chase can also be involved. In some cases, she might be the one trying to keep Percy out of trouble or, on the contrary, joining him in his 'delinquent' adventures. Grover could also be there, perhaps reluctantly getting dragged into Percy's misadventures.
One interesting 'Percy Jackson Lovecraft fanfiction' story could be one where the dark and mysterious elements of Lovecraft's universe blend with the demigod world of Percy Jackson. For example, a story where the Old Ones start to influence the dreams of the demigods, leading to strange and dangerous adventures. It could show Percy and his friends having to deal with new, otherworldly threats that are a cross between the eldritch horrors of Lovecraft and the mythological beasts they are used to.
In a particular 'Percy Jackson faints' fanfiction, Percy faints after being poisoned by a strange and rare plant in the Underworld. His friends then have to race against time to find an antidote. This creates a lot of tension and drama as they search through different realms and face various challenges to save Percy.
In some fanfiction, Percy might get transported to a different time period. Imagine him in ancient Greece, before the gods had fully established their current rules. He would have to navigate this world without the knowledge and support systems he's used to, and it would be really cool to see how he adapts and changes the course of events there.
One interesting Prince Percy Jackson fanfiction could be one where Percy discovers he has royal blood from an ancient underwater kingdom. In this story, he has to balance his normal demigod duties with the new responsibilities of being a prince. Maybe he has to attend grand underwater ceremonies and deal with court politics while still trying to save the world from monsters.
In some 'Percy Jackson texting fanfiction', the demigods use texting to communicate across different camps. Percy might be texting Thalia from Camp Half - Blood to Camp Jupiter. They talk about the differences in their training methods and share stories of their heroic deeds. There could also be a plot where a new demigod is introduced through texting. The other demigods start getting strange texts from an unknown number, and it turns out to be a new recruit who needs their help.
Well, in some fanfictions, the eldritch elements might be merged with the Greek mythology in the Percy Jackson world. For example, an eldritch entity could possess one of the gods, and Percy has to figure out how to save the day. He might have to team up with his friends and face not only the power of the possessed god but also the unfathomable nature of the eldritch being. It could be a really exciting and unique take on the Percy Jackson universe.
There might be a fanfiction where Demeter takes Percy under her wing to teach him about nature magic. In this story, Percy discovers new powers related to plants and the earth. He could use these powers to fight off enemies in a more unique way compared to his usual water - based powers. It would be a great character - development arc for Percy.
A great Percy Jackson mana fanfiction could be about a new character who has the power of mana and enters the Camp Half - Blood. This character brings a new dynamic as they try to teach the demigods about mana and how it can be used in combination with their existing powers. The story could explore the clashes and friendships that form as a result, and how they all work together to face new threats with this added power source.