The theme of secrecy also pops up often. Eggsy might hide his omega status for various reasons, like fear of discrimination or wanting to prove himself on his own terms in a male - dominated world. Merlin may or may not be aware of this secret at the start. This creates a lot of tension and mystery in the fanfiction. It can lead to some really exciting plot twists when the truth finally comes out, and the way they deal with it can vary from story to story, which makes each fanfic unique in its exploration of this theme.
Another theme is the discovery of self - identity. Eggsy may be an omega but he has his own agency and goals. In many fanfictions, his journey of coming to terms with his omega identity while still being the badass character he is, is a central theme. It's often tied to his relationship with Merlin, who might be an alpha that helps him accept himself or sometimes challenges his ideas about his identity. And of course, there's the theme of love and attraction that is always present in these stories, as their A/B/O natures can either enhance or complicate their feelings for each other.
One great Eggsy Merlin A/B/O fanfic is 'The Omega's Destiny'. It has a really interesting plot where Merlin, as an alpha, discovers Eggsy's true omega nature in a rather unexpected situation. The story does a great job of exploring their relationship dynamics within the A/B/O universe.
Another theme is loyalty. They are all loyal to the Kingsman cause and to each other. Fanfictions might show them facing situations where their loyalty is tested, like when an outside force tries to turn them against one another. In these stories, they always come out stronger in the end because of their unwavering loyalty.
One common theme is loyalty. Since they are partners in their line of work, many fanfictions explore how their loyalty to each other extends beyond just the job and into a more personal relationship.
The theme of sacrifice also appears sometimes. Given the nature of their work in Kingsman, there could be scenarios where one of them is willing to sacrifice for the other, which adds depth and drama to the relationship in the fanfiction.
One common theme is loyalty. They are all part of a team or a group in the original story, and in the fanfiction, this loyalty often translates into deep emotional bonds between them. For example, they would go to great lengths to protect each other.
A third common theme is self - discovery. Omegas especially may go through a journey of finding out who they are in relation to their a b o status, and how they can break free from the traditional roles if they choose to.
One common theme is loyalty. Given their roles in the Kingsman world, loyalty to each other and to the cause is often explored in a new light when the slash element is added. It could be about how their loyalty extends beyond just friendship or comradeship.
Friendship is also a big theme. Writers often explore the deep bond between Merlin and Eggsy. They might write about how they support each other through tough times, or how their friendship started and grew over time. It could be as simple as a story about them having a day off and just hanging out together, sharing stories and jokes.
Another theme is self - discovery. The characters, especially the Omegas, often discover new aspects of themselves. They might find hidden strength or new abilities. In some female male ABO fanfictions, the Omega female realizes she can stand up for herself and change the way Alphas view Omegas in their world.
Another theme is the idea of fated mates. In a b o stuckony fanfic, the characters are often meant to be together, and they have to figure out how to make their relationship work despite the challenges in their world. This adds a sense of destiny and inevitability to the story.