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.
At first, it's a bit rocky. Peter is used to being on his own, and Tony has his own way of doing things. But as they spend more time together, they find common ground. Tony helps Peter with his schoolwork, especially in science - related subjects. Peter, in turn, shows Tony the importance of having a pure heart in the superhero world. They go through challenges together, like fighting villains side by side, which deepens their bond.
In this fanfiction, Tony Stark's character would develop in several ways. Initially, he might be a bit clumsy at parenting, but as time goes on, he'd become more attuned to Peter's needs. His focus would shift from just his own inventions and heroics to also considering Peter's future. He'd become more selfless, as he'd be willing to sacrifice his time and resources for Peter's well - being. He might also become more cautious in his actions, knowing that he has a young life depending on him.
Peter often develops a stronger sense of family. Before, he might have felt alone, but with Natasha as his adoptive mother, he starts to feel more secure. He becomes more confident in himself too. For instance, he might be more willing to stand up to bullies at school.
The plot might revolve around how Tony and Steve adjust their lives to fit Peter in. For instance, they have to learn how to be proper guardians. They could struggle with things like setting rules for Peter. On the other hand, Peter might introduce them to a more youthful and modern side of life. Maybe they all bond over building some high - tech gadget together in Tony's lab.
At first, it might be a bit rocky. Tony, being used to his own space, might feel smothered by Steve and Bucky's over - protectiveness. But as time goes on, he'll start to see their good intentions. Steve's moral compass will inspire Tony to be a better person, and Bucky's loyalty will make Tony feel secure. Eventually, they'll become like a real family, with Tony looking up to Steve as a father figure and seeing Bucky as a cool older brother.
One possible main antagonist could be a villain who is jealous of Tony's resources and sees Peter as a way to get to him. Maybe someone like Justin Hammer, who could try to manipulate Peter into betraying Tony and Steve.
Living with Tony could also make Peter more aware of the bigger picture in the superhero world. He would be exposed to Stark's network of heroes and villains. This could make him more strategic in his actions as Spider - Man. He might start thinking about the long - term consequences of his actions rather than just reacting to immediate threats. For instance, he could start working on ways to prevent crime rather than just stopping it when it happens.
In these fanfictions, Peter is often more confident because he has two very strong and capable dads. For example, he might take on more dangerous villains earlier than in the original, knowing he has Tony's tech and Steve's combat skills to back him up.
Peter could stand up to Tony. By showing his strength and not taking Tony's meanness lying down, he might earn Tony's respect. For instance, if Tony makes a snide comment, Peter could give a smart comeback that makes Tony see him in a new light.
At first, it would be really rocky. Peter would be very wary of Venom given their past encounters. But as Venom shows his more caring side in the adoption, Peter would start to trust him a bit. They'd have to learn to communicate, which would be difficult because of Venom's different way of thinking.