Some people like to include the classic 'Dutch' from the first Predator movie in their fanfics. He's a tough human who can hold his own against the Predators. And for the Aliens, a genetically - modified Alien can be a unique addition, one that has enhanced abilities that make it even more of a threat to both Predators and humans.
In alien x predator fanfiction, the Predator is a top - pick character. There are different types of Predators with their unique looks and skills, which gives writers a lot of room for creativity. For example, the Berserker Predator with his more aggressive style. The Xenomorphs as a whole are also popular, but the Alien drones are often focused on. They are the foot soldiers of the alien horde and can be used to create intense battle scenes. Additionally, there are some recurring human characters. There's the rogue adventurer type who is always getting into trouble and the military leader who has to make tough decisions when dealing with the alien and predator threats.
There's also the 'Ripley' character from the Alien series. Since she has so much experience dealing with Aliens, she can be a really interesting addition to a crossover fanfiction. She could potentially team up with a Predator to take on the Alien threat in a new and different way.
Obviously Naruto and Boruto themselves are the most essential characters. But Sasuke can also be a great addition. His relationship with Naruto is well - known, and his skills and experience can add depth to the story. He could act as a mentor to Boruto as well.
Obviously Wolverine himself is a must - include. Then there's Storm, with her powerful weather - controlling abilities. Cyclops is also popular as he was a key leader in the X - Men. These characters can interact with Wolverine in various ways, like in battles or in making important decisions for the mutant community.
Another common theme is the mystery surrounding the two species. Fanfics often explore the origin and motives of the aliens and predators in more depth. For example, some stories might delve into why the predators hunt the aliens. It adds an extra layer of intrigue to the already complex relationship between the two.
Well, aside from the main trio, characters like Vilgax are often included. He's a powerful villain and can create a lot of conflict in the story. Grandpa Max is also a good character to add. His wisdom and experience can guide Ben in difficult situations. And then there are the aliens themselves. For example, Rath is a very popular alien form of Ben, and fans like to write stories that focus on his wild and unpredictable nature.
There are some human characters that are interesting too. They are often out of their depth when caught in the middle of the Alien - Predator conflict. Their struggle to understand what's going on and to survive in such a dangerous situation can be really engaging. For instance, some scientists who are studying the Aliens or Predators and then find themselves in the middle of a fight, they have to use their wits to try and stay alive.
The main character from the game, of course, is a popular choice. Also, Cyrus from Team Galactic is often included as he is such a complex and interesting villain. And Dawn or Lucas, depending on the version, are great to have as they are the typical Pokemon trainers that players can relate to.
Sebastian is often a popular choice. His demonic nature and his loyalty (in a rather twisted way) to Ciel make him a very interesting character to cross over. He can easily interact with characters from other dark or supernatural works, and his powers and suave personality can add a lot to a crossover story.
Pikachu is always a popular choice. It's so well - known and cute, and imagining it in a transformation scenario, like turning into a human or another Pokemon, can be really interesting. Another popular character would be Charizard. Its cool and powerful look makes for great transformation stories. And of course, Mewtwo. Given its mysterious origin and powerful psychic abilities, a TG story involving Mewtwo could be very engaging.