One common theme is loyalty. Captain America is all about loyalty, and in these fics, that loyalty extends to his relationship with the reader. For example, he'll always be there to protect the reader.
Another theme is the idea of an ordinary person (the reader) being thrust into an extraordinary world with Captain America. It's about how the reader adapts to this new reality and how they form a bond with him in the midst of all the chaos and heroics.
One common theme is adventure. The OC might join Captain America on his missions, facing various villains and dangerous situations.
One common theme is friendship. Given their different backgrounds and skills in the Avengers, they can form a strong bond based on mutual respect. Another theme is adventure. They often go on missions together in fanfiction, facing various threats.
The theme of sacrifice also pops up. Their relationship is such that they might be willing to sacrifice themselves or their own interests for the sake of the other. This could be in the face of a powerful enemy or a difficult decision that has to be made for the greater good.
Another theme is loyalty. They are extremely loyal to each other. In fanfics like 'Loyalty in the Face of Adversity', it shows how they will not abandon each other no matter what the situation is, whether it's fighting against a common enemy or dealing with internal conflicts.
There are also themes related to teamwork. Since they are from different 'worlds' in a sense (Captain America's world in the Avengers and the Young Justice world), they have to learn to work together. This can involve overcoming initial mistrust or misunderstandings. And sometimes, there are themes of sacrifice, like when a character has to make a difficult choice to save the others, whether it's a member of Young Justice or Captain America himself, which adds depth and drama to the fanfiction.
Power and responsibility is also a theme. Both Captain America and Iron Man have different views on how to use their power. Fanfictions often play with these ideas, showing how they might influence each other or find a middle ground. For example, some stories might have them debating about the best way to protect the world.
One common theme is adventure. The cowboy often takes the reader on exciting journeys through the wild west, whether it's chasing outlaws or exploring uncharted territories.
One common theme is self - acceptance. The story might focus on the chubby reader coming to terms with their body image while being in a relationship with America. For example, America could be the one who helps the reader see their beauty regardless of their size.
One common theme is adventure. The reader often gets involved in exciting adventures with America, like exploring different parts of the country or going on international missions. Another theme is friendship that gradually turns into love. They start as friends, share common interests, and then feelings change over time.
One common theme is the reader being rescued by the police. It creates a sense of heroism and a connection between the reader and the police character. Another theme is the reader working alongside the police in some capacity, like being an informant or a civilian with special skills. It adds an element of adventure and cooperation.