A really interesting concept would be Percy in a crossover with a high - fantasy world, like Middle - earth from 'The Lord of the Rings'. He would be so out of place, but his skills with a sword and his connection to water could be really useful. Maybe he could help Frodo and the Fellowship in some way, like using his water powers to put out fires or to cross dangerous rivers.
The characters' interactions are also fascinating. Imagine Harry Potter meeting Percy Jackson. They come from different but equally dangerous worlds. Harry could be intrigued by Percy's ability to control water, and Percy might be curious about Hogwarts. Fanfictions often play with these crossovers to create unique friendships or rivalries.
Well, time - travel is a cool concept in percy jackson fanfiction. Imagine Percy going back in time to change some crucial events in the history of the demigods. Also, there are fanfictions that focus on Percy having new powers or abilities. This could be because of some new magical artifact or a special training he undergoes. And of course, the idea of Percy having to adapt to a completely different camp, like a Roman - Greek hybrid camp, is really engaging.
One interesting concept could be a darker version of Percy's powers. For example, instead of just controlling water, he might be able to use it in more menacing ways, like creating water blades that can cut through almost anything. Another concept could be a darker side to his relationships. Maybe his friendship with Grover takes a turn, and there's more conflict and distrust. Also, a darker Percy might have a different view on the gods, perhaps feeling more resentful towards them for all the hardships he has faced, instead of just being the hero who blindly follows their orders.
One interesting concept could be the modernization of the Percy Jackson world in a gaming context. For example, how the demigod powers are translated into gaming abilities like special moves or skills. Another could be the creation of new quests within the game that are inspired by the original books, such as finding lost artifacts from Greek mythology in a virtual world.
A cool concept might be a modern - day mortal who somehow drops into the world of Percy Jackson. Maybe they have some hidden knowledge or ability that helps them survive and make an impact. They could introduce new technology or ideas from the real world that the demigods have never thought about, like advanced medical knowledge or new forms of communication.
One interesting concept could be alternative character backstories. For example, in some fanfictions, a character might have a different origin story that ties into the Greek mythology in a new and unexpected way. Maybe a minor god has a much larger role in the fan - created story.
One interesting concept could be the combination of different demigod powers. For example, a character might combine the water - controlling powers of a Poseidon - related demigod with the wind - controlling powers of a Zeus - related one. This can lead to really cool and unique abilities that are not seen in the original series.
Another concept is the exploration of different character backstories. Fanfiction often delves deeper into a character's past that wasn't fully explored in the original books. For instance, we could see more about Nico di Angelo's time in the Underworld before he joined Percy and the others, and how that shaped his personality and powers.
One interesting concept could be the combination of the mythological elements from Percy Jackson with the dark and apocalyptic setting of Doom. For example, how the demigods would react and adapt to the hellish landscapes and demonic threats in the Doom universe. Another concept might be the power struggle between the gods in Percy Jackson's world and the forces of evil in Doom. It could also explore how the weapons and abilities from Doom could be integrated into the hands of the Percy Jackson characters, like Percy using a Doom - style plasma sword instead of his regular sword.
One interesting concept could be alternate family relationships. For example, a headcanon where Percy has a long - lost sister who also has demigod powers. This could add new dynamics to his story and how he copes with family issues in the demigod world.