The MCU timeline would be significantly different. In the early Iron Man movies, Natasha could have been introduced as Tony's sister much earlier. This would have changed the dynamic of his character development. He might not have been as reckless in some situations because he had a sister to think about. Also, in Natasha's storylines, having Tony as a brother could have provided her with more resources and support, changing the way she approaches her missions and relationships with other characters in the MCU.
If Tony Stark were raised by Peggy Carter in fanfiction, it could drastically change the MCU timeline. For starters, Tony's personality might be different. Peggy was a strong - willed and disciplined person. Growing up under her influence, Tony might be more by - the - book and less of a maverick. His approach to technology could also be different. He might focus more on military applications that align with Peggy's values rather than the more commercial and sometimes unethical applications he pursued in the original timeline. Also, his relationship with Howard Stark would be complex. Instead of the distant and often troubled relationship they had, it could be one of mentorship from Peggy's perspective, with Howard having a different role in Tony's life.
One idea could be that they discover they are siblings during a big battle. Maybe they both have a similar power or technology that leads them to figure it out. For example, they find out they have the same kind of energy source in their suits or weapons that was passed down from their parents. Another plot could involve them working together to uncover the secrets of their family's past. They might travel to different places, like an old family mansion or a secret research facility their parents were involved in.
One great 'Tony Stark and Natasha Romanoff fanfiction' is 'The Unlikely Alliance'. It explores their relationship in a post - apocalyptic world where they have to rely on each other's skills to survive. Their banter and the way they gradually come to understand and respect one another is really engaging.
Yes, there are likely fanfictions with this premise. Fanfiction writers often come up with creative and unexpected relationships between characters. They might explore how Natasha and Tony's relationship would be different if they were siblings, and how it could impact the events in the Marvel universe.
One challenge is getting their personalities right. Tony is a brilliant but often egotistical tech - genius, while Natasha is a highly trained and mysterious spy. It's hard to make sure their interactions are in line with their established characters. Another challenge is creating a believable relationship between them. Given their different backgrounds and roles in the Avengers, it's not easy to write a smooth transition from colleagues to something more. Also, coming up with original plot ideas that haven't been overdone in the already large pool of fanfiction can be difficult.
One idea could be a story where they discover their sibling bond in a rather unexpected way. Maybe they both get kidnapped by a common enemy who reveals the truth about their relation. They then have to work together to escape and along the way, they share memories from their past that they didn't know were connected. For example, they might find out that they both had a favorite hiding spot as children in two different locations that were actually part of the same secret family place.
In a more serious aspect of their dynamic, they could be each other's support system. Tony, who has his own demons like his father issues and PTSD from various battles, could find comfort in Natasha, who has her own share of traumas from her past as a spy. And Natasha could rely on Tony's intelligence and resources when she is dealing with threats that are beyond her normal capabilities. Their relationship could be a complex mix of love, rivalry, and mutual respect.
A possible plotline could be them having to keep their marriage a secret from the world. Maybe because of Tony's business rivals or Natasha's undercover work. They would have to navigate their relationship while hiding it from everyone, which could lead to some really tense and exciting moments.
Another factor is the potential for exploring uncharted relationships. In the official Marvel universe, their relationship is not as deeply explored as some others. Fanfiction allows writers to create scenarios where they interact more closely, whether it be in a romantic or a strong platonic way. For example, they could be on a mission where they have to rely solely on each other and in the process, a deep bond forms. This gives fans a chance to see different sides of the characters and how they might interact in various situations.
Well, one possible plot could be that they discover they are siblings in a dramatic moment during a big battle. Then they have to figure out how to work together as family while still dealing with the threats against the world.