One common theme is the idea of an unlikely bond. Since the predator is often depicted as a fearsome and alien being, the development of a relationship with a human reader is quite unexpected.
There's also a story where the predator is on a hunt but instead finds a connection with the reader who becomes its mate. In these types of fanfictions, the cultural differences between the two are usually explored in depth, creating a really interesting dynamic.
Rather than seeking lemon fanfictions, you could look for regular 'predator x reader' fanfictions on platforms like Archive of Our Own. They have a wide variety of non - inappropriate stories that focus on the relationship between the predator and the reader in a more appropriate way.
One common theme is the power struggle. In 'alien vs predator x reader fanfiction', there's often a fight for dominance between the aliens and predators, and the reader gets involved in some way. Also, the theme of adaptation is prevalent. The reader has to adapt to the harsh and strange environments created by these two species. For example, in many stories, the reader has to learn how to avoid the acidic blood of the aliens or the advanced hunting techniques of the predators. There's also the theme of friendship or alliance in some cases, where the reader forms an unlikely bond with either an alien or a predator against a common enemy.
A third common theme is transformation. The male reader may experience a change in his perception of the world or himself due to his encounters with the female predator. This could be in terms of his courage, his view of other species, or his understanding of the concept of danger. These themes add depth to the fanfiction stories and make them more engaging for readers.
A 'lost boys david x reader mate fanfiction' often focuses on a romantic relationship between the character David from 'The Lost Boys' and the reader - insert, who is considered his mate. It allows fans to explore a fictional relationship, delving into the dark and alluring world of the Lost Boys. The stories might include elements like the reader being drawn into the vampire lifestyle, David's possessiveness, and the challenges they face as a couple within the context of the movie's universe.
A sense of danger is also a common theme. Slenderman is often associated with fear and threat in his original lore. In these fanfictions, the reader is usually in a situation where they are both attracted to and a bit afraid of Slenderman. It adds an element of excitement and tension to the story. For example, in many stories, the reader might be in a spooky forest where Slenderman lurks, and they have to navigate their relationship while also being in a potentially dangerous environment.
A common theme is the discovery of their mate bond. It often starts with an unexpected encounter or a strange feeling that draws Crowley and the reader together. Another theme is the protection aspect. Crowley, being a powerful character, will do anything to protect his reader - mate from harm.
One common theme is survival. The male reader and the fem predator often find themselves in dangerous situations and have to work together to survive. For example, they might be stranded on an alien planet and need to rely on each other's skills.
Love and loyalty are big themes. The reader's love for the Volturi kings and their loyalty to them (or vice versa) is often explored. Also, the theme of destiny is common. Many of these fanfictions depict the reader as being fated to be the mate of the Volturi kings, and how they come to terms with this pre - determined path.