I also like 'A Demigod in a Vampire World'. This fanfiction imagines a female Percy Jackson - like character who is thrown into the Vampire Diaries universe. The author does an excellent job of exploring how her demigod abilities would fare in a world dominated by vampires, witches, and werewolves. It has a great plot that keeps you hooked from start to finish as she tries to find her place and also deal with the various power struggles in the new world.
There's a fanfiction titled 'Percy in Mystic Falls'. In this story, a female version of Percy Jackson somehow ends up in Mystic Falls. It delves into how she interacts with the vampires and other supernatural beings there. It's full of action and some really cool crossovers between the two storylines. For example, Percy's water powers are put to the test against vampire strength.
One popular 'Percy Jackson and the Vampire Diaries' fanfiction is 'The Crossover Chronicles'. It combines the magic and mythology from Percy Jackson with the supernatural elements of The Vampire Diaries in an interesting way.
Another theme is identity. A female character from the Percy Jackson world finding herself in the Vampire Diaries setting has to figure out who she is in this new context. Is she still a demigod? How does she fit in with the vampires and other creatures? This exploration of identity makes the stories deeper and more engaging. For instance, she might have to hide her demigod nature to survive among the vampires who could see her as a threat. Also, the theme of friendship and alliances often comes up. She may form unexpected alliances with some of the vampires or witches against a common enemy, like an ancient evil that threatens both the demigod world and the Vampire Diaries world.
I also like 'Fem Harry: A Magical Twist in the Vampire Diaries'. Here, fem Harry brings a whole new dimension to the Vampire Diaries story. Her unique magic causes quite a stir among the vampires and witches. The author does a great job of blending the two universes together, and the character development of fem Harry as she navigates this new world is really well - written.
Some fanfictions might explore how the demigods' weapons work against vampires. For instance, Percy's Riptide could potentially be very effective against vampires, as it is a magical weapon. And the vampires' speed and strength could pose a real challenge to the demigods. It would be fascinating to see how the characters from both series adapt to each other's worlds. Maybe the demigods would have to learn about the rules of the vampire world, like not being able to enter a home without an invitation, while the vampires would be shocked by the existence of gods and demigods.
One popular Percy Jackson and Fem Fury fanfiction is 'The Adventures of Percy and the Fem Fury'. It combines the elements of the Percy Jackson world with the unique characteristics of Fem Fury. Another good one could be 'Percy Meets Fem Fury: A New Alliance' which focuses on how they form an unexpected partnership.
One great fem Percy Jackson and Twilight fanfiction is 'The Hybrid Quest'. It combines the worlds really well, with a female Percy having to navigate the strange vampire - demigod situations. Another is 'Fem Percy in Forks' which focuses on how a female Percy would interact with the Twilight characters in their own setting.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a vast collection of fanfics from various fandoms, and there's a good chance you'll find some great female Percy Jackson and Vampire Diaries crossovers there. Another option is FanFiction.net, though the tagging system might require some careful searching.
One great Percy Jackson fem Luke fanfiction is 'The New Path of Fem Luke'. It offers a really interesting take on how a female version of Luke would interact with the other characters. The story delves deep into her relationships, especially with Percy, and shows how she might change the course of events in the Percy Jackson universe. It has some great character development and engaging plot twists.
One great fem Percy Jackson fanfic is 'The Female Percy Jackson Chronicles'. It explores Percy as a female character in different quests, maintaining the essence of the original story while adding a fresh perspective. The character development is really well - done in this one.
Maybe a demigod gets turned into a vampire in a strange magical accident. This would create a whole new set of challenges as they try to balance their demigod powers with their new vampire nature. They might have to deal with the vampire politics in Mystic Falls while also trying to stay true to their Olympian heritage. It could lead to some really interesting character development and power struggles.