The 'powerful outsider' trope is also popular. Fem Percy is a powerful demigod, and when she enters the Avengers' world, she often has to prove herself to the team. This leads to some great action scenes and character development as she shows what she can do. It's like she's an unknown variable that the Avengers have to figure out how to work with.
Another popular trope is the 'romantic subplot'. Often, fem Percy will develop a romantic relationship with one of the Avengers. This could be a slow - burn relationship with Captain America, where they start off as comrades but gradually fall in love. It adds an extra layer of drama and emotion to the fanfiction.
A common trope is the 'fish - out - of - water' one. Fem Percy Jackson is used to the world of Greek gods and demigods, so when she's in Gotham, she has to adapt quickly. Another popular trope is the 'powerful - duo' trope. She and Batman team up and their combined skills and powers make them an unstoppable force against the villains.
Another common trope is the 'powerful female lead'. Writers love to explore how a female Percy can be even more badass. They often give her new powers or enhanced versions of her existing ones. In crossovers with other hero - based universes, she usually ends up being a key player in saving the day, like in a crossover with the X - Men where she uses her water powers in unique ways to fight mutants and villains.
A common trope is the 'fish - out - of - water' situation. The female Percy Jackson is suddenly in the world of the Avengers, which is very different from her demigod world. Another popular one is the 'power - clash' trope, where her demigod powers interact in unexpected ways with the superpowers of the Avengers.
In Fem Percy Jackson and Jason Grace fanfiction, a common trope is the 'fish out of water' situation. For example, Fem Percy might be new to the Roman camp where Jason is from and has to adjust, and during that, their relationship develops. The 'rescue' trope is also seen often, where one saves the other from a dangerous situation. And then there's the 'shared destiny' trope, which ties their fates together in an interesting way, like they have to complete a quest together that only they can do.
The 'fish - out - of - water' trope is also seen a lot. When Percy ends up in Thor's world or vice versa, they are both out of their element. Percy has to deal with the strange Norse landscapes and customs, while Thor might struggle with the modern - day world if he goes to Percy's. It creates a lot of comical and interesting situations in the fanfiction.
One great fem Percy Jackson and the Avengers fanfiction is 'Percy in the Avengers Tower'. It has an interesting plot where fem Percy is brought into the Avengers' world and has to deal with both her demigod powers and the new superhero environment. The interactions between her and the Avengers are really well - written.
There are so many fanfictions out there that it's hard to determine if there's a popular one with this specific plot. The Percy Jackson and Avengers fanfiction communities are quite large, but this concept goes against the general heroic portrayals in both universes. It's less likely to gain widespread popularity, but it doesn't mean there aren't some well - written ones out there that a small group of fans might really like.
One popular trope is the 'forbidden love' angle. Since Percy and Luke are on different sides in the original story, in fem Percy and Luke fan fics, this can be intensified. Their love is something that goes against the rules of their world, like the demigod/godly politics. Another is the 'power couple' trope. Fem Percy with her powers and Luke's own skills could be seen as a force to be reckoned with. They might team up against common enemies in ways that deviate from the original plot.
Another common trope is the 'alternate universe' or AU. This could be something like a modern - day retelling of the stories in a different setting, or even a world where the characters have different powers or relationships. In Percy Jackson fanfiction, you might see an AU where Percy is a regular kid without knowing his demigod heritage at first. In Shadowhunters fanfiction, it could be an AU where the Clave has different rules.
One popular trope is memory recovery. In many of these fanfics, Percy has to gradually remember his past life as a demigod. It adds an element of mystery and character exploration as he figures out who he was. Another is the 'fish out of water' situation. Since he's reincarnated, he often has to adapt to a new world or time period, which can lead to some really interesting and comical situations.