Another trope could be the 'reunion' trope. If they are separated for some reason, like Thalia being turned into a tree or Percy going on a long solo quest, their reunion can be a very emotional and romantic moment in the fanfiction. It allows for a lot of pent - up feelings to be expressed.
One popular trope is the 'found family'. Given their complex relationships and backgrounds, many fanfictions explore how Percy, Thalia and Nico form a sort of family unit, supporting and protecting each other through various challenges.
One popular trope is the 'Chosen by Chaos' trope. For example, in many fanfictions, Percy, Nico or Thalia are chosen by Chaos for a special task. It gives them extraordinary powers and sets them on a grand adventure. Another is the 'Power - up' trope where they gain new abilities from Chaos.
One common trope is the 'Power of Friendship'. In many fanfictions, the strong bond between Percy, Annabeth, Thalia and Nico helps them overcome impossible odds. For example, they might be facing a powerful enemy but their trust in each other gives them the strength to keep fighting. Another trope is 'Character Growth'. Fanfics often show how each character, like Nico evolving from a somewhat withdrawn figure to a more confident hero.
One common trope is the 'enemies - to - lovers' scenario. They start off not getting along due to their different personalities or goals, but as the story progresses, they fall in love. For example, in some fanfics, Percy's headstrong nature clashes with Thalia's more cautious approach at first.
The popularity of Thalia and Percy as a pairing in fanfiction stems from multiple factors. Firstly, their personalities contrast in an interesting way. Percy is often more laid - back and humorous while Thalia is tough and no - nonsense. This contrast creates great chemistry in fanfiction. Secondly, they have a long history together in the original series, having been through many battles and adventures side by side. Writers can build on this pre - existing relationship to create new and exciting stories. For example, a fanfiction might explore a romantic relationship that was only hinted at in the original books, or they could be on a new adventure where their friendship is put to the test.
Popularity of Percy, Nico and Thalia siblings fanfiction varies. There are those who adore the idea of reimagining their relationships in this way. It gives writers a chance to delve deeper into their backstories and how they would support or conflict with each other as siblings. For example, Percy's leadership and Nico's more brooding nature, along with Thalia's fierceness could create really interesting family - oriented story arcs. Plus, fans who love the characters are always eager to see new angles on them, which makes this type of fanfiction appealing to a segment of the fanbase.
There could be many interesting aspects in such fanfiction. Maybe Thalia's love for Percy is a slow - burn kind of thing. It might start with her having a begrudging respect for him which gradually turns into deeper feelings as they face challenges together. For example, during a dangerous quest, Percy's bravery and selflessness could make Thalia see him in a new light.
Yes, there are quite a few. You can start by checking out fanfiction platforms like Archive of Our Own. Some stories might explore their relationship in the context of their adventures in the Percy Jackson universe.
There's also the 'hurt/comfort' trope. Perhaps one of them gets injured in a fight or has an emotional breakdown, and the other is there to comfort and take care of them. This can be a catalyst for their feelings to deepen. For instance, Thalia might get hurt while protecting Reyna, and Reyna realizes how much Thalia means to her during the recovery process.
Another reason is that in the original stories, their relationship has a lot of potential for development that wasn't fully explored. So fanfiction writers take the opportunity to dig deeper into their connection. They can create scenarios where Percy and Thalia become closer friends or even like family, which fills a gap for fans who want more of their relationship.