Well, in some 'halo female elite x human fanfiction', there might be a story where a human scientist is intrigued by the biology of the female elite. As they interact more, they learn about each other's cultures. The female elite shows the human the unique aspects of her society, and in turn, the human shares knowledge about Earth. This exchange leads to a deep friendship and mutual understanding.
Typically, the main characters are, of course, the Halo female elite and a human. The human could be a soldier, a scientist, or just an ordinary person caught up in extraordinary circumstances.
The Master Chief is also a common character. His stoic nature and incredible combat skills can create interesting dynamics when paired with an elite character. In some fanfictions, he might be forced to work with an elite against a common enemy much stronger than either of them alone.
One interesting story could be about an elite and a human having to team up to survive on a hostile planet. They start off distrusting each other but gradually learn to rely on one another's skills.
One common theme is cooperation. Given the historical enmity between humans and elites in the Halo universe, many fanfictions explore how they can work together, like in stories where they join forces to face a greater threat.
Often, the Master Chief is a popular character to include. His combat skills and leadership make him a great addition to any story involving a human - elite alliance. He can represent the best of humanity in the face of a new partnership with the elites.
Some of the best characters could be those side characters that help the female Spartan X and the female Elite in their adventures. For example, a human engineer who helps them upgrade their weapons or an Elite elder who gives them advice on how to deal with certain inter - species issues. These characters add more depth to the story.
In some fanfiction, a female Spartan X and a female Elite end up in a parallel universe where they have to work together to find a way back to their own worlds. During this time, they share their combat techniques and develop a deep friendship that defies the long - standing hostilities between their races.
Another storyline might involve a secret alliance between a group of humans and elites that is trying to broker peace between their two races. They have to work in the shadows, avoiding detection from the more militant factions on both sides. Their efforts could include sharing technology and cultural knowledge to build a foundation for future cooperation.
Another interesting one is 'The Elite's Redemption'. It tells the story of an elite who has committed many wrongs against the humans but then tries to make amends. It shows the journey of self - discovery and the building of bridges between the two species.