Survival is a very common theme. Since both xenomorphs and predators are dangerous and in a constant battle for existence in their own ways, fanfictions often revolve around their struggle to survive against each other or against a common threat. For example, in many stories, they might be on a planet with some other deadly force and have to work together to get out alive.
One interesting piece of xenomorph x predator fanfiction is 'Clash of the Aliens'. It explores a unique scenario where a young xenomorph and a young predator form an unlikely alliance to survive in a hostile environment. The story is full of action and shows how they overcome their natural instincts to cooperate.
In many fanfics, the exploration of the two species' cultures is fascinating. For example, how the predators view honor in the face of the xenomorphs' mindless aggression. It adds depth to the stories.
Another good one is 'Xenomorph - Predator: Clash of Titans'. This fanfic delves deep into the lore of both species. It shows the complex power dynamics between the xenomorphs' reproductive capabilities and the predators' hunting skills.
The novelty. It's not often you think about two such different and fearsome alien species being in love. It's like mixing two completely different elements that you wouldn't expect to go together, like fire and ice.
There's also 'Love Beyond Species' which not only focuses on the relationship between a xenomorph and a predator but also the reactions of their respective species. It's quite interesting as it shows the challenges they face while trying to be together, like cultural differences within their alien races.
Xenomorph x Human Female fanfiction might also focus on the power dynamics between the two. The Xenomorph is typically a very powerful and feared creature, while the human female may be seen as more vulnerable in a traditional sense. But in these stories, she could potentially find ways to hold her own or even gain an upper hand through her intelligence or unique connection with the Xenomorph.
It could start with fear and curiosity. The human is initially terrified of the xenomorph but as they observe it, they notice some unique behaviors. This piques their curiosity and they start to approach it cautiously.
One aspect of Xenomorph x human fanfiction is the horror element. The Xenomorph is a classic horror icon, and when paired with a human, it creates a lot of tension. The fanfictions can be really intense as they explore the fear that a human would experience in the presence of a Xenomorph.
A frequent theme is the relationship between the human (reader) and the xenomorph. It can range from fear - based, like in stories where the reader is constantly running from the xenomorph, to more complex relationships such as an unexpected bond. Also, themes of adaptation are common. The reader has to adapt to the presence and nature of the xenomorph in the story's world. For example, in some fictions, the reader learns to communicate with the xenomorph in some basic way.