In fanfiction, the possibilities are endless. The demigods could introduce magic in a more widespread way in the DC Universe. Imagine Annabeth's strategic mind being used to plan against the likes of Lex Luthor. Her knowledge of architecture and ancient wisdom could give the DC heroes an edge in battles that require more than just brute force. Also, the presence of demigods could lead to new storylines about the origin of some of the DC magic - related elements.
One interesting crossover is when Percy Jackson meets Batman. Batman is all about strategy and detective work, while Percy has his own set of skills dealing with the supernatural. Their meeting could lead to some really intense investigations into the dark corners of both the DC Universe and the world of Greek mythology. For instance, they could team up to find out if there are any connections between Gotham's criminals and the monsters from Percy's world.
Another one to check out is 'Justice League meets Camp Half - Blood'. In this fanfic, the Justice League discovers Camp Half - Blood. It's cool to see how Batman would interact with Chiron, or how Wonder Woman would view the demigod powers. There are a lot of great character moments as the two very different universes collide.
Fanfiction expands the Percy Jackson universe by adding new characters. Writers can create demigods with unique powers or backgrounds that add more depth to the world of Camp Half - Blood.
It's not possible in the traditional sense. Artemis is firmly committed to her status as a virgin goddess. But fanfiction often ignores such constraints. Maybe in a very creative fanfic, some sort of magical or divine intervention could make it seem possible, but it would be a huge departure from the source material. So while the idea is interesting for fanfic, it doesn't fit the normal Percy Jackson world.
Annabeth could definitely be one of his allies. She's smart and resourceful, and her knowledge of architecture and strategy would be useful no matter where in the universe they are. She could help Percy figure out the layout of strange alien cities or fortresses.
It reimagines it by introducing Japanese mythological creatures. For instance, instead of just facing Greek monsters, Percy could be up against a kappa in a fight near a river. This changes the whole dynamic of the battles he has to fight.
Well, if Percy stays as praetor, it could lead to a more stable leadership in Camp Jupiter. This might mean stronger defenses against external threats like the giants or other monsters. It also could change the power dynamics between the demigods of the two camps, as Percy has strong ties to Camp Half - Blood too. His continued presence as praetor might encourage more cooperation between the camps, which would be a big shift from the usual somewhat tense relationship.
Archive of Our Own (AO3) is also a great place. There are often well - written and unique takes on the crossover there. You can filter the search results to find exactly what you're looking for, whether it's a specific pairing or a certain type of plot.
One popular type of Percy Jackson fanfiction is the 'what if' scenarios. For example, what if Percy had joined the Roman camp instead of the Greek one from the start? Another popular theme is character relationships, like exploring a deeper friendship between Percy and Nico. There are also fanfictions that focus on new quests for the demigods, often with original monsters and challenges that the author creates based on the lore of the Percy Jackson world.