The theme of adaptation is quite prevalent. Captain America, coming from his own universe, has to adapt to the new rules and cultures of the crossovers. For instance, in a crossover with a high - tech cyberpunk world, he has to learn how to use new technologies while still holding onto his old - fashioned values. Also, the theme of heroism in different contexts is often explored. His concept of being a hero might be different from the heroes in the crossovers he enters.
One common theme is the clash of different ideologies. For example, when Captain America crosses over with a dystopian universe, his values of freedom and justice often conflict with the oppressive regimes there. Another theme is the exploration of friendship. When he meets characters from other franchises, they have to learn to trust and work together.
One common theme is loyalty. Their loyalty to each other is often a central part of the stories. They've been through so much together and would do anything for one another.
One common theme is the exploration of how Captain America deals with the unexpected situation of pregnancy. It could be about his struggle to balance his superhero duties with his newfound role as a potential father.
One common theme is sacrifice. Captain America might have to sacrifice some of his superhero duties to take care of his pregnant partner. Another theme is protection. He will do everything to protect his partner and the unborn child from any threats. And there's also the theme of family values. It shows how important family is to him even in the middle of his superhero life.
Family is a very common theme. Captain America, who has lost so much in his own life, often forms a new kind of family unit with the baby in these stories. Protection is also big, as he uses his skills to keep the baby safe from various threats.
A common theme is empowerment. Since it's a female version of Captain America, the stories often focus on her breaking gender barriers and proving herself in a male - dominated superhero world. For example, she might have to fight against sexist villains or deal with male characters who underestimate her at first.
Another theme is loyalty. Many OC fanfictions explore the loyalty that the OC develops towards Captain America and his ideals. This can be tested in various situations, like when facing a powerful enemy or when having to make a difficult choice between different loyalties. It adds depth to the relationship between the OC and Captain America.
One common theme is the struggle to overcome physical injury. Captain America is often depicted as superhuman, but in these fanfictions, his human side shows through when he has to deal with pain and the process of healing.
One common theme is culture shock. For example, when Rex is thrust into a different fictional universe like Middle - earth from The Lord of the Rings, he has to deal with the different cultures, languages, and ways of life. Another theme is teamwork. When he crosses over to a universe like the Transformers universe, he has to learn to work with the Autobots, and they all have to figure out how to combine their strengths to face challenges.
Growth and development are also common. The baby daughter grows up, and we see her character develop. It might include her learning about her father's heroic past, and how she decides if she wants to follow in his footsteps or make her own path. There could be a struggle between her normal life and the extraordinary world her father is part of.
One common theme is friendship. Since they are both heroes from the Marvel universe, fanfictions often explore how they become friends and support each other. Another theme is mentorship. Captain America, being from an older era, can sometimes be portrayed as a mentor to Spider - Man.