The theme of trust often comes up in Callen and Nell fanfic. They have to trust each other in their line of work, and fanfic authors like to expand on that. Also, the idea of sacrifice is there. For example, in some fics, one of them might be willing to sacrifice their own well - being for the other. Additionally, the theme of growth, both personal and professional, is quite common as they face various challenges together.
One popular Deeks and Callen fanfiction might be those that explore their friendship in-depth. For example, stories where they go on a mission together outside of the regular show plot and face challenges that test their loyalty to each other.
One interesting 'callen oc fanfic' could be about Callen's new partner, an original character, who has a mysterious past. They go on a mission together and the oc's skills surprise Callen at every turn.
One popular 'g callen fanfiction' might be those that explore his backstory in more detail. For example, stories could focus on his early days in the agency and how he developed his skills.
One possible plotline could be their adjustment to married life while still dealing with their high - stress jobs. They might have to balance their personal relationship with the demands of their work.
Archive of Our Own (AO3) is also very popular. It has a well - organized tagging system. So, if you're looking for specific types of Deeks and Callen fanfiction, like ones that focus on their relationship development or action - packed adventures, you can easily find them by using the appropriate tags.
First, know the character of Callen well. Study his traits, his backstory, and how he behaves in different situations. Then, create your oc with a clear personality. For example, if your oc is shy, show how that affects their interactions with Callen.
There's a fanfic called 'Callen and Nell: Partners in More Than Just Work'. In this fic, the author focuses on how their partnership at work gradually evolves into a more personal and meaningful bond outside of work. It has some great character development and plot twists. Also, 'Nell's Perspective' is a good read as it tells the story from Nell's point of view, giving insights into how she really feels about Callen.
One great place to find Callen and Nell married fanfiction is Archive of Our Own (AO3). There are many talented writers on there who might have created such stories. Just search for 'Callen and Nell married' in the search bar, and you'll be presented with a list of relevant fanfics.