Yes, there are some out there. You can start by looking on fanfiction websites like Archive of Our Own. Just search for 'goku x black widow' and you'll find various stories. Some might be action - packed adventures where they team up across different universes, while others could explore a more romantic side of their relationship.
First, give your OC a strong backstory. For example, if your OC was also trained in the Red Room, what made their experience different from Black Widow's? Maybe they had a mentor within the program who influenced them in a unique way.
Well, a common theme is the exploration of their powers and skills in relation to each other. How Deadpool's regenerative abilities and Black Widow's espionage training work together. And of course, there's the theme of friendship or more. Writers like to see how their relationship could develop beyond just being teammates.
One common theme is the clash of cultures. Goku's Saiyan heritage and Black Widow's Earth - based spy world are very different. Another is the power combination. They both are very powerful in their own ways, and fanfictions often explore how they use their powers together.
One possible plotline could be that Naruto is somehow transported to the Marvel universe and he meets Black Widow. They then team up to fight a common enemy, perhaps an evil ninja - like villain who has some sort of connection to Naruto's world but is also causing trouble in the Marvel world.
One common theme is the exploration of their unlikely bond. Given their very different natures, fanfics often look at how they come to understand and trust each other.
One interesting Black Widow OC fanfiction could be about an OC who is a young protege trained by Black Widow. This OC might have unique skills and a backstory that intertwines with Black Widow's own past. For example, the OC could be from a similar program but with a different set of challenges.
One idea could be that the OC has to deal with the legacy of Black Widow. He might struggle with living up to her name while also trying to carve out his own identity in the superhero world.
You can start by giving him some of Black Widow's traits, like her combat skills and strategic mind. But also add his own unique qualities, for example, a different moral code or a special power.
Well, a lot of Hawkeye x Black Widow fanfiction is centered around their unique bond. In many stories, they are depicted as having a deep emotional connection that goes beyond the typical superhero - teammate relationship. One story could show how Hawkeye's loyalty to Black Widow is unwavering, and she in turn trusts him completely. It could involve them going on a mission together that forces them to confront their feelings, like being trapped in a dangerous situation where they have to rely on their love for each other to survive.