What are some interesting storylines in Percy Jackson the Four Horsemen fanfiction?

One interesting plot could be Percy having to team up with one of the Four Horsemen against the other three. Maybe he has to work with Famine to stop War, Pestilence, and Death from causing total destruction. Another plot could be Percy trying to find a way to banish the Four Horsemen back to their realm using his demigod powers and some ancient magic.

Annabeth Chase could also be a main character. Her wisdom and knowledge of architecture and mythology would help in understanding the Horsemen's motives and weaknesses. She could be the one to come up with plans to stop them, like finding ancient artifacts that could be used against the Horsemen.

In a fanfiction battle between the Four Horsemen and Percy Jackson, Percy would likely have a good chance. He has his water powers and combat skills. But the Four Horsemen are extremely powerful in their own right. It could really go either way depending on how the writer wants to portray it.

One common theme is the idea of an unlikely alliance. Percy, coming from his own world and set of powers, has to work with the Four Horsemen who are quite different. Another theme is the battle against a greater evil. They usually have to put aside their differences to fight something much more powerful.

There could also be a fanfiction where Percy has to face his inner demons in a more psychological way. Maybe he's haunted by the memories of all the battles he's fought and the friends he's lost. His friends then have to help him through this tough time, and in the process, they learn more about each other's deeper fears and insecurities.

One interesting storyline could be where Percy Jackson somehow ends up in Ariel's underwater world. Maybe he's on a quest that takes him there and he has to team up with Ariel to defeat a common enemy, like a sea monster that is threatening both the underwater kingdom and the surface world that Percy is from.

There could also be a fanfiction where the Hunters take in a new recruit who has a mysterious past. This new character might have powers that are unknown to the world of demigods and the Hunters have to figure out how to train and control these powers. Along the way, they discover that this new recruit is somehow connected to an old prophecy that could change the fate of the demigod world.

One interesting storyline could be a Futa Percy Jackson going on a new quest that involves saving a magical realm from an ancient evil. In this fanfiction, Percy's unique form might give her an edge in combat, like being able to use both male and female - like combat styles.

A really engaging storyline could be them being transported to a different era in the world of Greek mythology. They would have to adapt to the different rules and powers that exist in that time while still relying on their own abilities. This would put their friendship and skills to the test in a whole new and exciting way.

One interesting storyline could be a crossover where Percy Jackson meets the Crusaders in a modern-day setting. Maybe they have to team up to fight a common enemy that is threatening both the world of Greek mythology and the historical context of the Crusaders. Another could be Percy using his powers in a way that the Crusaders initially misunderstand, leading to some conflict before they realize they can work together.