Well, a great storyline might be that Percy, as a gang leader, has to recruit members from different backgrounds, including other demigods who have been shunned by society. This would lead to a diverse gang with various powers and skills. He could then train them to work together, much like he did with his friends at Camp Half - Blood. Also, there could be a plot where the gang is wrongly accused of a crime they didn't commit, and Percy has to use his wits and powers to clear their name and expose the real culprits.
In this type of fanfiction, perhaps Percy's gang is in a constant battle with a group of mythical creatures that are causing chaos in the mortal world. As the gang leader, Percy has to strategize and use his knowledge of both the demigod and mortal worlds to combat these threats. He might also face internal conflicts within the gang, such as members having different ideas about how to handle situations. Some might want to use more violent methods, while Percy tries to find a more peaceful solution, which could lead to interesting character development.
One possible storyline could be Percy using his demigod powers in a new way to lead the gang. For example, his ability to control water could be used to create diversions during heists or to protect the gang's territory from rival groups. Another could be Percy having to deal with the moral implications of leading a gang while still holding onto his heroic values. Maybe he forms the gang to protect the demigod community from a new, more dangerous threat that the traditional Camp Half - Blood can't handle alone.
One interesting storyline could be the struggle of a Son of Artemis in a world dominated by male demigods. He might face discrimination or be underestimated at first. For example, in a quest, others might doubt his abilities because he's associated with Artemis, a goddess who has a mainly female following. Another could be his relationship with the wild animals that Artemis is associated with. He might have an extraordinary bond with them, which helps him in various challenges, like using a pack of wolves to track down a powerful enemy.
Perhaps a story where the technology - savvy Artemis Fowl finds a way to hack into the ancient magic systems of the Percy Jackson universe. This could lead to all sorts of chaos as he accidentally unleashes some long - dormant threats while also trying to use the magic for his own ends. And Percy has to step in to stop the mayhem while also learning about the newfangled technology Artemis brings with him.
One of the most interesting storylines could be Percy's adventures as the God of Rivers. He might have to deal with river spirits and their conflicts. For example, he could be involved in a power struggle between different river domains.
In some fanfictions, Typhon is not just a mindless monster. He might have motives and desires. For instance, he could be seeking revenge against the gods for imprisoning him. This makes him a more complex character and gives the story more depth. Writers can then explore the moral implications of whether the demigods should just destroy him or try to reason with him.
Another idea in Percy Jackson and Demeter fanfiction is the idea of a friendship or a mentorship between them. Demeter could be like a mother figure to Percy, guiding him not only in matters related to nature but also in his personal growth. She could give him advice on how to deal with his complex family situation, using examples from the natural world she governs. This would add a very interesting emotional depth to the story.
Well, a story could revolve around Percy being magically regressed to a baby state for a mission. In this state, in diapers, he has an innocent view of the world. The diapers become a sort of symbol of his vulnerability. His friends might have to protect him more carefully, and there could be a plot where the enemy underestimates him because he's in diapers but he still manages to use his wits in his baby form to outsmart them.
One popular storyline could be Percy and Annabeth going on new adventures together, exploring different parts of the mythological world that weren't covered in the books. For example, they could travel to a long - forgotten island full of ancient and powerful magic.
One possible plot could be Percy getting a special power from Apollo's blessing. For example, he might gain the ability to heal faster, which would be really useful in his battles. He could use this new power to save his friends in a dangerous situation, like when they are facing a powerful monster and his friends are severely injured.
He might become more assertive and decisive. Normally, Percy is a bit of a reluctant hero, but as a gang leader, he'd have to make quick decisions to protect his gang. He could also become more secretive, as gang activities often need to be kept under wraps.
Well, a great story line might be the eldest Titan teaching Percy some ancient and forgotten powers. Since Percy is always in need of new skills to face his foes. This could also create a conflict within Percy as he wonders if using these Titan - taught powers would be seen as betrayal by the gods. And then there could be a plot where the eldest Titan reveals a long - held secret about Percy's own heritage that's related to the Titans.