One common theme is the contrast between their ideologies. Batman is more of a lone vigilante with a darker view of justice, while Captain America is a symbol of patriotism and upholds a more idealistic view. Fanfics often explore how they bridge this gap.
In some fanfictions, the writers might explore what would happen if Batman was given the super - soldier serum. How would his already formidable skills be enhanced? And how would Captain America react to this new version of Batman? It could lead to some really interesting character dynamics and storylines.
One popular theme is the two heroes teaming up against a common enemy. Maybe a supervillain that's causing chaos in both Gotham and the world Captain America protects. Another theme is a clash of ideologies at first, as Batman is more of a vigilante with his own set of rules, while Captain America follows a more patriotic and military - inspired code.
For Batman, you could explore his past more deeply. Maybe in the fanfiction, he has a new revelation about his parents' death that changes his perspective. With Captain America, you could focus on how he adapts to the modern world in different ways than shown in the movies.
One idea could be a crossover where Batman and Captain America team up to take on a common enemy like a powerful alien threat. They could combine their unique skills, with Batman's detective skills and gadgets and Captain America's combat expertise and leadership.
Well, in some fanfiction, they might compete in a series of challenges. For example, a test of physical strength, strategic thinking, and moral integrity. Captain America, with his super - soldier serum - enhanced abilities, would be a formidable opponent for Batman, who relies on his gadgets and martial arts skills. This could lead to an intense back - and - forth as they try to outdo each other.
Captain America might seem to have the upper hand in terms of raw physical power. However, Batman is known for his ability to analyze his opponents and find their weaknesses. He could potentially use his intellect to outmaneuver Captain America. On the other hand, Captain America's combat experience and unwavering determination can't be underestimated. So, it's a toss - up.
Websites like Archive of Our Own (AO3) are great places to start. It has a large collection of fanfictions, and you can easily search for Captain America and Batman - related ones using the search function. There are also tags that can help you narrow down the results based on the type of story you're interested in, like 'team - up' or 'alternate universe'.
One possible plot could be that a new super - villain emerges who has the ability to manipulate time and space. This villain starts causing chaos in both Gotham City and the world where Captain America operates. Batman uses his detective skills to try and figure out the villain's plan, while Captain America rallies the superheroes in his world. Eventually, they cross paths and team up. Captain America's leadership and combat skills combined with Batman's intelligence and gadgets prove to be a formidable force against the villain.
One great Batman and Captain America fanfic is 'The United Front'. It has an interesting plot where Batman and Captain America team up to fight a common enemy from another dimension. The story does a great job of portraying their different fighting styles and moral compasses while still showing how they can work together effectively.