What are the common themes in XCOM OC Alien fanfic?

Sure. 'XCOM: Liberation' is a great one. It has unique original characters and an engaging plot that involves the fight against aliens in a very immersive way.

Well, the idea of hope is a big theme. Despite the difficult situation of the alien blockade, the characters in the fanfics don't give up hope. They keep fighting and looking for solutions. Also, the theme of sacrifice is there. Some characters may sacrifice themselves for the greater good, for the sake of breaking the alien blockade or saving others.

One common theme is the exploration of the unknown. Since it involves an alien pregnancy, there's a lot of mystery about how the pregnancy will progress, what the alien offspring will be like, etc. Another theme is the isolation of the pregnant character. Often, they are alone in their situation, not fully understood by others.

One common theme is human survival. It's all about how humans find ways to stay alive during the alien invasion.

The theme of acceptance is also quite common. As the alien performs on the stage, they gradually gain acceptance from the human audience or other performers. It can be a story of breaking barriers and building relationships between different species in the context of the stage environment.

One common theme is transformation. The obvious one is the physical transformation during the alien metamorphosis, which can be both fascinating and terrifying. Another theme is survival. Characters often have to struggle to survive in the face of the unknown changes brought by the metamorphosis. And there's also the theme of discovery, as they discover new abilities or aspects of themselves during the process.

Another theme is survival. Being abducted is a dangerous situation, and the characters usually have to fight for their lives. They may face threats from the aliens or the harsh conditions of the alien spacecraft. In some fics, the humans have to outwit the aliens to survive.

One common theme is the exploration of differences. Since it involves an alien, there are differences in biology, culture, and values. For example, how an alien might show affection could be very different from a human. Another theme is acceptance. The characters usually have to accept each other's uniqueness to build an intimate relationship.

One common theme is the exploration of the Vipers' nature. Are they just mindless enemies or do they have more complex personalities? Another theme is the conflict between XCOM and the Vipers. It's often about the battles, strategies, and the struggle for survival. Also, there are themes of redemption and transformation, like a Viper changing sides or XCOM trying to understand the Vipers better.

One common theme is friendship. Since there are three OCs, their relationships with each other often form a big part of the story, like in 'The Trio's Friendship' where they rely on each other through thick and thin.