One common theme is redemption. After their big fallout, many fanfics focus on how they can redeem themselves in each other's eyes. For example, they might save each other from dangerous situations.
Friendship is also a major theme. Despite their differences, they are often portrayed as having a deep - seated friendship. Fanfics may show them sharing their thoughts and feelings, and relying on each other in tough times.
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.
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.
A third common theme is sacrifice. Fanfictions may depict situations where either Captain America or Iron Man has to sacrifice something for the greater good or for the sake of their relationship. It could be something as simple as sacrificing personal time to train together or as big as sacrificing a chance at personal glory to save the other.
One common theme is the resolution of their differences. Since they had major conflicts in the movies, fanfic might use a kiss as a way to show them making up. Another theme could be the exploration of a hidden or suppressed love. Maybe in the story, they realize they have deeper feelings for each other that they've been ignoring.
There is a fanfic named 'Cap and Iron Man: United Front'. In this, they team up against a new and powerful enemy that threatens the whole world. It's full of action scenes and also some heart - to - heart conversations between them that are really well - written.
One common theme is loyalty. Writers often explore how the members of Team Iron Man are loyal to Tony Stark and his vision for the Avengers. They show how this loyalty drives their actions during the civil war.
Another theme is the exploration of their different worlds. Iron Man's world of high - tech and corporate influence, and Spider - Man's world of neighborhood - level heroics. Fanfics often bring these two worlds together, showing how Spider - Man adapts to Iron Man's more high - tech environment and how Iron Man learns from Spider - Man's down - to - earth approach.
One possible storyline could be them realizing their deep emotional connection during a particularly tough battle. They start to rely on each other more than just as comrades, and slowly feelings of love and attraction develop. For example, Iron Man might be injured and Captain America stays by his side constantly, leading to a new level of closeness.
Growth is a common theme. Since it's about a 'baby' Captain America, it often shows his journey of growing into the hero we know. Another theme is friendship, like his early bonds with Bucky. These fics might explore how those relationships were formed when he was younger.
Friendship is a very common theme. Since they are both part of the Avengers, many fanfics explore how they become friends and support each other. For example, they might show Hawkeye cheering up Captain America after a tough battle.