Another place to look is FanFiction.net. There are many authors who post their works there, including fanfics related to Tony Stark at different ages, so it might be a good source for what you're looking for.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and there's a good chance you'll find some great 'baby Tony Stark fanfic' there.
One great 'baby Tony Stark fanfic' might be the one where he shows extraordinary intelligence even as a baby, like outsmarting his babysitters with his little gadgets. It's really cute to see how his genius starts to shine at such a young age.
A great fanfiction idea could be that their baby has some unique superpower that they have to keep hidden from the public. This would add an element of mystery and danger to the story. They'd have to be extra careful about who they trust, and it could lead to some tense moments when the baby's power accidentally reveals itself.
A fanfiction could explore the emotional side of their new family. Pepper and Tony might have different parenting styles at first. Pepper is more practical and cautious, while Tony is a bit more adventurous. But as they grow into their roles as parents, they learn from each other. Their baby becomes the center of their world, and they have to make decisions about how to protect and raise the child in a world full of superheroes and villains.
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.
When Tony Stark time travels, especially to difficult times in history or the future, his character often develops in terms of his sense of responsibility. He might see the consequences of his actions on a larger scale. For instance, if he travels to a future where Earth is in a post - apocalyptic state because of some technology he created, he becomes more cautious and more committed to using his inventions for the greater good. He starts to think about the long - term effects of his actions rather than just the short - term gains. This transformation in his character makes him a more complex and relatable figure in the fanfic.
Tony Stark could use his intelligence to analyze the BAMF's weaknesses. He might quickly run scans during their encounters to figure out what can harm the BAMF. Then, he could upgrade his Iron Man suit with new weapons and defenses specifically designed to counter the BAMF's attacks.
Pepper would be a likely candidate. She has a close relationship with Tony already, so she'd probably step up and take care of him. She has experience dealing with Tony's antics, so she could handle baby Tony's needs too.
There's a fanfic series that has some 'bottom Tony Stark' elements in it. The series is called 'The Stark Chronicles'. It not only focuses on the relationship aspect but also on how Tony's character evolves because of his position in these relationships. It has a great mix of action, drama, and some really sweet, tender moments between the characters.
The concept of Tony Stark as a cat in a fanfic can also bring out different aspects of his personality. Cats are often seen as independent, which is a trait that Tony already has. But as a cat, it could be exaggerated. He might be more aloof and choose when and who he wants to interact with among the Avengers. This could create some tension or just more light - hearted moments as the other Avengers try to figure out what the cat - Tony Stark is thinking or wanting.
No, it is not appropriate. Writing sexual fanfics about a character is unethical and goes against the respectful portrayal of the character. Tony Stark is a well - known and beloved character from the Marvel universe, and such content demeans his image.