In the original Merlin storyline, Kilgarrah was often a mysterious and somewhat distant figure. When they are mates in fanfiction, it humanizes Kilgarrah to an extent. He becomes more involved in Merlin's day - to - day life. Their relationship becomes more central to the story. Instead of Merlin's adventures being mainly about his role in Camelot and his relationship with Arthur, now his relationship with Kilgarrah also plays a major role. This can lead to new sub - plots. For example, they might have to hide their relationship from some of the more superstitious or anti - dragon characters in Camelot, which adds a new layer of drama to the story.
One popular plot twist could be that Kilgarrah, despite his ancient and somewhat aloof nature, reveals a vulnerability only Merlin can understand. This changes their relationship from a typical mentor - protege one to a more equal and emotional bond. Another might be that they have to face a common enemy that forces them to rely on their new - found'mateship' in a way they hadn't expected. For example, a powerful dark magic user who targets both of them specifically because of their unique connection.
One of the main themes is the discovery of a shared destiny. In many 'Harry and Merlin Mates' fanfictions, they find out that they are meant to be together for a greater purpose, like saving the magical world. Also, the theme of mentorship exists. Merlin, being more experienced in magic, often mentors Harry, and this relationship dynamic is explored in different ways in these fanfictions.
One popular theme is loyalty. Merlin's unwavering loyalty to Arthur is often explored in a more romantic or deeply bonded way in fanfiction. Another theme is the power dynamic between them, like how Merlin's magic can both protect and complicate their relationship. Also, the idea of destiny plays a big role. Since they are so intertwined in the Arthurian legend, fanfiction might explore how their being mates is fated and how they fulfill their destinies together.
One great 'Harry and Merlin Mates' fanfiction is 'The Bond Beyond Time'. It weaves an interesting story of how Harry and Merlin's paths cross in a magical world filled with unique spells and challenges. Another one could be 'Mates Across Realms' which focuses on their friendship development as they face various mythical creatures together.
It reimagines the legend by focusing on their relationship in a more intimate way. Instead of just being king and servant, they are mates, which changes the power balance. For instance, Merlin might have more influence over Arthur's decisions because of their closer bond.
In a more humorous take on the 'Merlin tied to a bed' fanfiction, it could be that Merlin has fallen ill and the overly - protective Gaius has tied him to the bed to make sure he rests. Merlin, being the active person he is, complains constantly. Arthur comes to visit and teases Merlin about finally being still for once. Meanwhile, Merlin tries to convince Arthur to let him loose, promising that he'll be fine. Eventually, Gaius relents and unties Merlin, who then immediately starts bustling around the room.
If Merlin died in the fanfiction, it could trigger a series of tragic events. The balance of power could tip, and the villains might seize the opportunity to attack. It could also bring out hidden strengths in the remaining characters as they try to cope with the loss.
One more idea is that Merlin is tied to the bed in a dream - like state created by an ancient magic. In this dream world, he is faced with his deepest fears and insecurities. His friends in the real world notice his strange behavior and try to wake him up. Merlin, while in the dream, has to find the source of the magic that is binding him and break free. Through his inner strength and the memories of his friends, he manages to do so and wakes up, having learned more about himself and his magic.