Pepper Potts could be a common character. She might be in a position where she tries to mediate between Tony and his unwanted daughter, either trying to get Tony to be more accepting or helping the daughter understand Tony's perspective.
Yes, there could be such fanfictions in the vast world of fan-created content. Writers often like to explore complex and unexpected relationships in their stories. Maybe in this kind of fanfiction, the daughter could have some sort of misunderstanding or be influenced by some dark forces to become an 'enemy' to Tony Stark.
Tony would also likely expose her to the world of science and engineering from a young age. He might take her to his lab and let her play with non - dangerous parts while he works. This would help her develop an interest in those fields.
In some fanfictions, their relationship could be a bit rocky at first. Maybe the adopted daughter has a different view on how to use technology for good. But through various events and heart - to - heart conversations, they grow closer and learn from each other, with Tony learning to be more open - minded and the daughter learning the value of his experience.
Another possibility is that he underestimates the importance of family. Tony has always been focused on his own achievements and the big - picture stuff. He might not realize how much his daughter needs him until it's too late.
He'd be frantic. Tony loves his daughter deeply, so he'd immediately start searching for her. He'd use all his resources, his technology, and his connections to find her.
Maybe his own self - centered nature plays a role. Tony Stark has always been a bit of a playboy and a genius focused on his own projects. His daughter might seem like an afterthought compared to his latest invention or business deal.
One possible plot could be that Tony Stark has been so engrossed in his work on a new high - stakes project. Maybe a new type of armor or a technology to save the world from a new threat. His mind is constantly occupied with calculations, blueprints, and meetings. As a result, he starts to forget little things about his daughter, like her school recital or her favorite toy. His daughter feels neglected and starts to act out, which finally makes Tony realize he needs to balance his work and family life.
One way to explore it is by showing the impact on the relationships around them. Pepper might be caught in the middle, trying to help both of them. The Avengers could also be divided in their opinions on how to handle the situation. Some might think Tony should take a break from hero work to focus on his family, while others think the solution lies in some high - tech fix. This would create a lot of interesting character dynamics.
Love and friendship are also common themes. Her relationships with friends at school or in the superhero community, and her romantic interests if any, are often explored. It gives a more well - rounded view of her character as not just a Stark, but also a young girl growing up in a complex world.