The 'Redemption Arc' is also common. Some fanfictions focus on a character who has made mistakes in the past, like a minor villain, and they get a chance to redeem themselves in the House of Hades setting. It adds an interesting layer of depth to the story.
Percy and Annabeth are often very popular. Their relationship is a central part of the series, and in fanfiction, people like to explore different aspects of it, especially during their trials in the House of Hades.
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.
One common trope is the 'fish out of water' situation. For example, Percy suddenly finding himself in Hellboy's world and having to adapt to the much darker and grittier environment. Another trope is the 'team - up against a greater evil'. This usually involves Percy and Hellboy combining their unique skills to take on a powerful villain that threatens both their worlds.
One popular trope is the 'fish - out - of - water' scenario. For example, Percy might find himself in the world of Danmachi and have to adapt to its different rules and cultures. Another common trope is the power - up trope. Characters from Percy Jackson's world might gain new abilities in the Danmachi setting or vice versa.
Percy and Annabeth are always interesting. Their relationship is central to the series, and in the House of Hades, they face extreme challenges that can be explored further. Their love and loyalty to each other can be put to the test in different ways. For example, when they are separated, how do they each cope and still strive towards their common goal? Another interesting character is Nico. He has a deep connection to the underworld and his own complex backstory. In the House of Hades, his powers and knowledge could be further developed in fanfiction.
Percy and Annabeth are always interesting to focus on. Their relationship is central to the story, and in the House of Hades, there are so many opportunities to explore their bond further. They are both strong, yet vulnerable in different ways. Nico di Angelo is also a great character to focus on. His past and his connection to the underworld give him a unique perspective. Plus, his powers are really cool. Another interesting character could be Bob, the Titan. He has a complex personality and his loyalty to Percy and the others adds an interesting dynamic.
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' 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.
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.
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.