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.
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.
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.
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.
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.
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.
One idea could be that Bruce Banner is somehow transported to the wizarding world of Harry Potter. Maybe he arrives during a time of great danger, like when Voldemort is at his most powerful. Bruce's scientific knowledge could be combined with magic in unexpected ways. For example, his understanding of gamma radiation might interact with some of the more dangerous magical spells or potions. He could also form an unlikely friendship with Harry Potter. Harry could teach him about magic, while Bruce could show Harry some of the scientific concepts from his world.
In this kind of fanfiction scenario, Harry Potter might be saved in a very unique way. Bruce Banner, when he transforms into the Hulk, has incredible strength. He could use his brute force to protect Harry from dark wizards or dangerous magical creatures. For example, if Voldemort was about to cast a deadly spell on Harry, the Hulk could jump in and take the hit or simply overpower Voldemort. It would be a really interesting crossover as it combines the magical world of Harry Potter with the superhero world of Bruce Banner.