What are some interesting ideas for an 'alien x fanfic'?

One idea could be an alien with unique telepathic abilities forming a deep bond with a human. The alien might be on a secret mission on Earth and the human gets accidentally involved. They start to understand each other's cultures and values, leading to a friendship that defies the differences between their species.

A plot could involve a group of humans who are caught in the middle of a war between Predators and Aliens. They form an alliance with a rogue Predator who has his own reasons for wanting to stop the fighting. Maybe there's a powerful Alien queen that the Predators are desperate to kill, and the humans get dragged into that mission.

One idea could be exploring Alien X's internal conflict between Bellicus and Serena in a new situation. For example, when faced with a moral dilemma on a planet where two species are at war and both have valid reasons for their actions. Another plot could be Alien X having to deal with a powerful new enemy that can somehow disrupt his omnipotent powers. Maybe this enemy has the ability to split Bellicus and Serena's consciousness further, causing chaos within Alien X.

One interesting idea could be how Harry adapts to the alien culture. Maybe he has to learn new languages or customs that are completely different from what he's used to on Earth.

One idea could be an alien race discovers Justin Bieber's music and it has a profound impact on their culture. They might start to imitate his style of dress and even try to recreate his music with their own alien instruments.

One idea could be that the abducted person discovers the aliens have a strange love for lemons and it becomes a key part of their interactions. Maybe the aliens use lemon - scented substances during their experiments on the human. Another idea is that the abducted human offers lemons as a form of peace offering to the aliens, which then leads to an unexpected friendship.

One idea could be a young human who gets caught in the middle of an alien - predator conflict and has to use their wits to survive. Maybe they form an unexpected alliance with a lone predator who sees potential in the human. Another plot could be an alien - predator hybrid created by some mad scientist, and the two species have to team up to stop this new threat that is stronger and more unpredictable than either of them.

One idea could be that the aliens come in peace but their appearance is so strange that humans initially panic. For example, they might be made of a substance like jelly and can change their shape at will.

Well, you could write about the origin stories of some of the aliens in more detail. Maybe there are secrets about how Four Arms became so strong that haven't been fully explored. Also, a fanfic could focus on the relationships between the aliens. For instance, do they have a hierarchy or a social structure among themselves? And then there's the idea of an alien form going rogue and Ben having to deal with it in a unique way, not just by using another alien form to fight it.

One idea could be that Ben has to adapt to the daily life of the alien he's stuck as. For example, if he's stuck as a Four Arms, he has to deal with constantly breaking things because of his size and strength. Another could be that he has to find a way to communicate with his friends and family in his alien form, which might be difficult if the alien has a different language or way of expressing itself.