Another interesting idea is to do a time - travel fanfiction. Have a character from Gallagher Academy go back in time to meet the founders of the school and learn about the original mission and values. They could then bring that knowledge back to the present to help solve a current crisis at the academy.
One popular theme is friendship. The characters in the Gallagher Academy form strong bonds, and fanfiction often explores those relationships further. Another is adventure. Since the academy is a place of mystery and training, fanfictions might take the characters on new and exciting adventures. And of course, there's the theme of self - discovery. The girls at the academy are constantly learning about themselves, and fanfic can delve deeper into that process.
I think Macey is very interesting to write about. She comes from a different background compared to the other girls, and her journey of fitting into the Gallagher Academy life while still being true to herself is fascinating. Zach is also a great character. His relationship with Cammie and his own role in the spy world can be explored in many ways in fanfiction. And then there's Mr. Solomon. His mysterious past and his role as a teacher can be really engaging to write about.
First, you should really know the Gallagher Academy world well. Re - read the books or re - watch the series if there is one. Then, think of a character you want to focus on, like Cammie or Bex. Start with a simple situation for that character, like a new mission they're assigned or a problem they have with a friend at the academy.
Another idea is that there's a new threat to the Gallagher Academy, and Cammie and Zach are the only ones who suspect it. They start their own investigation, which takes them on a wild adventure across different countries. Along the way, they encounter old enemies and make new allies, all while trying to figure out who is behind this new threat and how to stop it.
Their relationship could develop uniquely if they had to go through a trust - building exercise that was really extreme. Like being locked in a room with a ticking time bomb and they have to disarm it together while sharing their deepest fears. This would bring them closer in a very intense way.
Family is a very common theme. Carl's relationship with his siblings and his parents often forms the core of the story. Another theme is growth, as fans like to explore how Carl matures over time. For example, in many fanfictions, Carl goes from being a bit of a troublemaker to a more responsible person.
You can start by looking on fanfiction websites such as Archive of Our Own. There are often a lot of user - generated stories there. Some forums dedicated to Gallagher might also have links to fanfiction.
One great Gallagher fanfiction could be 'Gallagher's Adventure in the Mysterious Land'. It might involve Gallagher using his unique skills to solve puzzles in a strange world. Another could be 'Gallagher and the Lost Friendship' which delves into his relationships.
One common theme is the struggle of the OC to fit into the Gallagher family. Given the Gallagher family's complex and often chaotic nature, the OC usually has to find their place among them.