Another story might focus on the backstory of Noble Six in the context of the RWBY world. How did they end up there? What are their goals? It could explore their character development as they interact with the various characters in RWBY, like trying to understand the complex relationships between the different Huntsmen and Huntresses.
Obviously, Noble Six is one of the main characters. In the RWBY - Noble Six fanfiction context, they are usually the outsider from a different world or setting. Then there are the characters from RWBY like Ruby, Weiss, Blake, and Yang. Ruby, with her leadership and powerful scythe skills, often has interactions with Noble Six.
A third concept could be exploring different universes. Fanfiction could depict a scenario where the RWBY universe and the Halo universe (where Noble 6 is from) collide, creating a completely new world. This new world could have its own rules, like a mix of Dust and advanced Halo technology. Characters would have to adapt to this new environment, and it could lead to a lot of interesting plot twists.
One great 'noble six fanfiction' is 'The Noble Six's Last Stand'. It delves deep into the character's final moments, adding a lot of emotional depth. Another is 'Noble Six: Reborn' which gives a different take on what could have happened if the character survived. There's also 'Noble Six's Untold Adventures' which explores some side missions and backstories not shown in the original game.
One idea could be a crossover with the Halo universe and the Mass Effect universe. Noble Six could find themselves on a mission in a Mass Effect planet, facing off against the Reapers. Another idea is a crossover with Star Wars. Maybe Noble Six gets transported to the Star Wars galaxy and has to navigate the complex politics while using their combat skills. A third idea is a crossover with the Warhammer 40K universe. Noble Six could be fighting alongside the Space Marines against the hordes of Chaos.
One interesting concept could be the combination of different Halo universes or timelines. For example, seeing how Noble Six would interact with characters from other Halo installments. Maybe Noble Six gets thrown into a situation where they have to team up with enemies from another part of the Halo world due to some strange anomaly. This could lead to some really cool character development and action scenes.
One interesting aspect could be the unique combination of Shirou's character from one universe with the RWBY setting. It might lead to new and unexpected power combinations. For example, how his Noble Phantasm abilities would interact with the Grimm in RWBY. Another aspect could be the exploration of Shirou's character in a different context, perhaps showing different sides of his personality as he adapts to the RWBY world.
One plot idea could be that Noble Six and Kat team up to solve a mystery within the Halo universe. Maybe they are investigating strange disappearances of important UNSC personnel. Another could be a story where they have to survive in a hostile alien - controlled territory together, relying on each other's skills. For example, Noble Six's combat expertise and Kat's technological know - how.
One good 'Harry Potter is noble six fanfiction' could be the one where Harry discovers a new magical ability related to the concept of 'noble six'. It might involve him using this ability to defeat a new dark force in Hogwarts. However, it's quite hard to specifically point out without more context as there could be many different interpretations of this 'noble six' concept in fanfiction.
There might be a fanfiction that focuses on Noble 6's relationships with other members of Noble Team. For example, how his bond with Kat developed over time and the shared experiences that strengthened their connection.
I'm sorry, I don't have specific 'pregnant noble six fanfiction' stories to recommend directly. You could try searching on fanfiction websites like Archive of Our Own. There are often many talented writers who create various types of fanfiction, and you might be able to find some related works there.