A new character could be introduced as his dance partner. Maybe a transfer student from another country who has a unique dance style. This character could bring a fresh perspective to Peter's life, teaching him new moves and also learning about his world as Spider - Man. They could form a fast friendship based on their shared love for dance.
Gwen Stacy could also be his dance partner in a fanfiction. Their relationship was always full of energy and passion, and dancing together would be a great way to show that. They could have a sweet, romantic dance routine that showcases their feelings for each other, while also having some fun and light - hearted moments.
One possible plot could be that Peter enters a city - wide dance competition to win a scholarship for college. He has to keep his identity as Spider - Man a secret while also training hard for the dance competition. His friends Ned and MJ help him with choreography and moral support.
Yes, there are quite a few. You can start by looking on popular fanfiction websites like Archive of Our Own. Just search for 'Peter Parker can dance' and you'll likely find some interesting stories where Peter shows off his dancing skills in various scenarios, whether it's at a school event or in the middle of a battle to distract his enemies.
One option is Pepper Potts. She is intelligent and has a strong will. In a fanfiction, she might see the potential in Peter and they could develop a relationship. Pepper could also help Peter deal with the business side of being a superhero, like Tony Stark did, and they could fall in love over time.
It could be the Green Goblin. He's always been one of Peter's toughest foes and poisoning him would be a devious way to take him down.
It could be a vengeful criminal that Spider - Man has put away in the past. This criminal has spent years in prison plotting his revenge and finally gets the chance when Peter is vulnerable. Maybe he manages to ambush Peter in an alleyway while he's on his way home from school or work.
The AI itself could be a main character. It could have a name like Nova or something cool. And then there could be Peter's aunt May, who might be involved in the story when she discovers Peter's AI project and has some concerns about it at first but then comes to see its potential.
Maybe Doctor Octopus. He has always been obsessed with power and knowledge. He might kidnap Peter to figure out the secret behind his spider - powers. He could think that by studying Peter, he can enhance his own mechanical arms or gain some new form of power that would make him the most feared villain in the city.
The Green Goblin could be a great main villain. He might target Peter Parker's daughter to get revenge on Spider - Man. Just like he did with Gwen Stacy in the original story, he could pose a serious threat to her.
It could be a new super - villain introduced in the fanfiction. Maybe a villain with powers that are specifically designed to counter Spider - Man's. For instance, a villain who can manipulate technology and uses it to disable Peter's suit and then delivers a fatal blow.
Ned could be another main character. He could come over to Peter's place to keep him company while he's in pain. They could end up playing video games or Ned could be trying to cheer Peter up by showing him some new Star Wars collectibles he got.