Losing someone she loves deeply could also lead her to turn evil. If, say, Hawkeye was killed and she blamed the Avengers or the world in general for not being able to protect him, she could become vengeful and start to act in an evil way. Grief and anger can often twist a person's moral compass, and Black Widow would be no exception.
Firstly, show mutual respect. Black Widow is a strong and capable character, so the reader character should respect her skills and experience. For example, in a scene where they are planning a mission, the reader listens to Black Widow's ideas. Secondly, build on shared experiences. Maybe they have both faced a common enemy or been through a tough training together. This creates a bond. Also, let there be some vulnerability. Black Widow may open up about her past traumas to the reader in a moment of weakness, and the reader can be there for her.
The dynamic among the Avengers would be completely different. Instead of being a trusted ally, she would become a formidable enemy. They would have to figure out how to deal with her without hurting her too much, especially for those who were close to her like Captain America and Iron Man.
One possible plotline could be that the boy, after turning into Black Widow, has to adapt to her skills and abilities. He might find himself in the middle of a spy mission and has to use her combat and espionage training to get out of sticky situations. Another could be that he has to deal with the memories and emotions that come with becoming Black Widow, like her past traumas and relationships.
Redemption can be a theme as well. If the reader has a troubled past, Black Widow could play a role in their journey towards redemption. Also, love in different forms, whether it's platonic or a deeper romantic connection, is commonly explored in these fanfictions.
His personality might become more reserved and calculating, like Black Widow. He'd be more cautious in his interactions and less likely to trust easily.
You can get inspired by looking at fan art of Black Widow. There are many talented artists who create amazing visuals of her, and these can spark ideas for your fanfiction. For example, an action - packed fan art piece might inspire you to write a high - stakes battle scene for her in your story.
First, read a lot of existing Black Widow fanfictions. This can give you a good sense of the common themes, characterizations, and storylines in this genre. Second, study the Black Widow character deeply from the official Marvel sources like movies, comics. Know her backstory, her relationships, and her personality traits. Third, practice writing regularly. Start with short scenes or one - shots focused on her.
Often, characters like Hawkeye might be paired with her. Their long - standing friendship in the original Marvel universe could translate into an interesting dynamic in the fanfiction. He could be someone who helps her adjust to her new form, or they could go on adventures together with her new - found size being an advantage.
Adventure is also a big theme. The fics usually involve the two characters going on missions or facing some sort of danger together. This could be anything from fighting against a new super - villain to infiltrating a secret organization. It adds excitement to the relationship between Black Widow and the reader.