I really liked a fanfic where fem Harry Potter accidentally travels to Bruce Banner's world. It shows how she tries to adapt to this new world full of science and technology, which is so different from the magical world she's used to. And Bruce Banner is intrigued by her magic. It's a great exploration of two very different characters coming together.
There's a fanfic that focuses on a love story between fem Harry Potter and Bruce Banner. The story starts with a strange magical - scientific experiment gone wrong that brings them together. Their relationship develops slowly as they learn about each other's powers and pasts. It's a bit of a slow - burn but really interesting to see how they overcome the differences between their two worlds.
Fem Harry Potter might be initially cautious around Bruce Banner, especially if she witnesses his transformation into the Hulk. She could use her magic to try and calm him down when he's in a Hulk - rage. Bruce, on the other hand, would be fascinated by Harry's magic. He might study it scientifically, trying to understand the principles behind it.
The 'unlikely allies' trope is often used. Given their very different backgrounds, fem Harry Potter and Bruce Banner make for an unlikely pair. But in fanfiction, they often end up working together towards a common goal. There's also the 'culture clash' trope as the magical and scientific cultures they come from are so different. This leads to some really interesting interactions and storylines.
One great Bruce Banner hurt fanfiction is 'Banner's Struggle'. It delves into his internal pain after one of his Hulk transformations goes awry. The author does an excellent job of portraying his emotional turmoil.
Maybe Fem Harry Potter is on a quest to find a magical object that has found its way into the Marvel world. Bruce Banner, in his Hulk form, initially scares her but then they realize they can help each other. The Hulk's strength could be useful in protecting Harry from physical threats while she uses her magic to protect Banner from magical ones.
Perhaps Bruce Banner adopts Harry Potter after the events at Hogwarts. He takes Harry to the world of science, showing him things like advanced laboratories and scientific research. Harry, in turn, shows Bruce the wonders of magic. Their bond grows as they learn from each other, and together they face new threats that combine elements of both the magical and scientific worlds.
I'm not sure specifically about 'Bruce Banner x Harry Potter' yaoi fanfiction. Yaoi fanfiction often involves creating romantic or sexual relationships between male characters in a non - canonical way. However, it might be a very niche combination and not as common as some other fanfiction pairings. You could try searching on some dedicated fanfiction websites like Archive of Our Own (AO3) to see if there are any works of this kind.
In fanfiction, Bruce Banner could save Harry Potter through his scientific knowledge as well as the Hulk's powers. Maybe there's a situation where a magical curse is spreading uncontrollably. Bruce, in his normal state, could analyze the curse using his scientific expertise and figure out a way to stop it. And if there are any physical manifestations of the curse that need to be dealt with, the Hulk could step in and use his strength to destroy or contain them. This would show a great combination of the scientific and magical elements in the story.
One common theme is identity. Just like the male Bruce Banner, fem Bruce also has to figure out who she is in relation to her new - found power. Another theme is acceptance, both self - acceptance and acceptance from society. People may be afraid or judgmental of her as a female with such great power. And of course, there's the theme of power control. She has to learn how to control her Hulk - like abilities.
First, you need to decide on the basic plot. Will it be a story where they meet in one of their worlds, or will it be a new world entirely? Then, think about how their personalities will interact. Bruce is a brilliant scientist with a temper problem, while Harry is a brave and determined wizard. You can create interesting scenes based on their different skills and mindsets. For instance, Bruce could use his scientific knowledge to analyze a magical phenomenon, and Harry could use magic to protect Bruce from danger.
Another fanfic concept could involve Harry Potter somehow ending up in Bruce Banner's world. He might be there to learn about modern Muggle technology and end up meeting Bruce. Together, they could face a threat that requires both magic and scientific knowledge to defeat. For example, a villain who is using both dark magic and advanced technology to cause chaos.