Some fanfics might focus on their relationship in the past. Maybe exploring how they first met and fell in love. It could also involve dealing with the secrecy and danger that Bruce's condition brought to their relationship, like how they had to hide from the military or other threats.
One great 'Bruce Banner and Betty Ross fanfic' could be about their adventures during Bruce's early days of dealing with the Hulk. It might show Betty trying to understand and support him. Another could be a story set in an alternate universe where they manage to live a normal life without the threat of the Hulk always looming.
Fanfiction.net is also a possibility. However, the quality can vary greatly. Look for stories with high ratings and lots of reviews. Sometimes, Reddit communities dedicated to the Hulk or related Marvel topics might also recommend some good Bruce Banner x Betty Ross fanfics.
Fanfiction.net is also a good place to search. There are countless fanfics on this site, and you can use the search function to specifically look for stories related to Bruce and Betty. Just be aware that the quality can vary widely.
One good one could be 'Banner and Ross: A New Beginning' which focuses on them rebuilding their relationship after a difficult time in the story. It shows their mutual respect and love for each other in a very clean way.
Another plot could revolve around a charity event. Ross and Alba both volunteer at the same event. They are assigned to work together on a specific task, like organizing a silent auction. Along the way, they face various challenges like difficult donors and last - minute changes. Through these challenges, they grow closer and form a bond that might turn into something more romantic.
Another plot could be that Bruce Banner is doing some research on a new form of energy and it somehow links to Harry's magic. Harry is brought in to help understand this strange new energy which has properties similar to magic. In the process, they learn from each other's worlds and develop a friendship while trying to keep this discovery from falling into the wrong hands.
One possible title could be 'The Iron and the Hulk: A Stark - Banner Alliance'.
One plot idea could be Percy and Bruce Banner teaming up to fight a new type of monster that is affected by both magic and gamma radiation. Another could be Percy getting lost in a scientific research facility where Bruce works and they have to figure out how to get Percy back to his world while also dealing with some lab - created threats. Maybe they also discover that there is a connection between the Greek gods and the science behind the Hulk.
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.
The plot could involve them working together on a new super - technology. For example, they might try to create a device that can control the Hulk's power more precisely, leading to all kinds of adventures and challenges along the way.