One great Percy Jackson fanfic set in Britain could be one where Percy and his friends visit an ancient British site like Stonehenge. In this fanfic, they might discover a hidden entrance to a demigod realm that was long forgotten. The British setting could add a whole new layer of mystery and magic, with different mythologies overlapping.
One common theme is the clash of different mythologies. Since Britain has its own rich mythology, when combined with the Greek mythology of Percy Jackson, it creates an interesting dynamic. For example, the idea of demigods from Greek and British origins having to work together or compete.
The characters would have to adapt to the different time period. For example, Percy would probably have to wear the clothing of the 1700s, which would be quite different from his modern attire. His way of speaking might also change slightly to fit in better.
He could encounter a new type of magic. Alaska has its own unique natural phenomena, like the Northern Lights. In a fanfiction, this could be tied to some kind of magical energy. Percy might find that his powers interact with it in unexpected ways. For instance, the Northern Lights could enhance his water - based powers, allowing him to create ice sculptures that come to life and fight for him.
In the Percy Jackson series, the Greek gods are central. Percy is a demigod, son of a Greek god. The giants are ancient enemies of the gods. In the books, Percy and his friends often face challenges related to the gods' feuds and the resurgence of the giants. The story weaves together Percy's adventures with the mythology of the Greek gods and the threat of the giants.
One possible plotline could be Percy Jackson finding himself in the 1700s and having to deal with the different forms of mythological creatures that were more prevalent during that time. Maybe he has to stop an ancient evil that was sealed away centuries ago but is now being awakened in the 1700s due to some dark magic rituals.