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.
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.
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.
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.
In the comics, Iron Man did not kill Captain America. Their conflicts and battles were part of the storylines, but not to the extent of one killing the other. The relationship between them was complex but not fatal.
In the comics, Iron Man doesn't end up killing Captain America. Their battles and disputes have various outcomes, but not one that involves a fatal blow from Iron Man.
In some fanfictions, their personalities clash in an interesting way. Iron Man's more hedonistic side might conflict with Captain America's self - sacrificing nature. But as the story progresses, they usually find a way to complement each other, with Iron Man learning about selflessness and Captain America understanding the value of innovation.
Sure. One great 'Captain America x Iron Man' fanfiction is 'Allies and More' which delves deep into their complex relationship. It shows how they overcome their differences and work towards a common goal while also exploring their personal feelings for each other in a very heartwarming way.