He would be portrayed as a heroic figure. Tony is already known for his heroics, but in this case, he would be shown as having a soft spot for the young Peter. He might be more patient and nurturing than he is usually depicted, as he realizes the potential in Peter and wants to protect it.
His character would also be shown as very observant. He would notice Peter's unique qualities, like his quick thinking and scientific aptitude, even at a young age. This would make Tony more determined to keep Peter safe and guide him on the right path, perhaps seeing in Peter a chance to make up for some of his own past mistakes.
He could be portrayed as having a glimmer of humanity left. His actions of saving someone would show that there is more to him than just being a mindless killer. Maybe there's some internal struggle within him as he goes against his usual nature.
Often, his age is adjusted to fit the type of story the author wants to tell. If it's a coming - of - age story, he'll likely be a teen. For instance, a lot of fanfics set in high school make him 16 or 17. This age allows for exploration of his growth, both as Peter Parker and as Spider - Man.
Peter would likely become more confident. With Tony and Steve as his guardians, he has two great role models. He would learn different skills from them. From Tony, he might pick up more about advanced technology and using it in his superhero work. From Steve, he could gain more discipline and a stronger sense of justice. His character would also develop in terms of his relationships. He would become more family - oriented, learning the importance of having a support system.
There are a few places to find 'Tony saves Peter' fanfiction. Firstly, AO3, as I mentioned before, is great because it has a well - organized tagging system. You can filter by characters (Tony Stark and Peter Parker) and then look for the ones that involve saving scenarios. Another option is Wattpad. Although it has a wide range of content, if you search thoroughly, you can come across some really good 'Tony saves Peter' fanfictions. Some Tumblr blogs also reblog or write their own versions of such fanfictions, so that's another source to check out.
His confidence would likely grow. Saving Mikoto, who is an important figure in the ninja world, would make Naruto realize his own capabilities even more. He would feel more like a true hero and protector of the village.
His character would likely become more conflicted. He'd be torn between the values he grew up with in Konoha and the new, darker values of Akatsuki. His development would be a struggle between his innate goodness and the evil around him.
He might be more disciplined. Since Peggy was a very no - nonsense and disciplined person, Tony could inherit those traits. He may be less reckless compared to his original character in the MCU. He would also have a different sense of purpose, perhaps more focused on upholding Peggy's values.
Peter's character arc would take a very dark turn. He'd likely be consumed by grief and a sense of obligation. His once - carefree and enthusiastic approach to being a superhero would be replaced with a more solemn and determined one. He might become more secretive, not wanting to let others in on his pain.
His sense of loyalty would be strongly influenced by Bucky. Bucky is known for his loyalty to Steve, and Peter would inherit this trait. He would stand by his friends and family no matter what. Also, his combat skills would progress rapidly under Bucky's tutelage. He'd become a formidable fighter at a young age, and this would boost his confidence but also make him a target for villains.
Peter could be developed as a strict but loving father. He might set high standards for Scott, pushing him to be the best he can be. For example, in school or in his use of any special abilities. This would show his determination to see Scott succeed.