Pepper Potts often plays an important role. She might be involved in helping Iron Man deal with the Ultron situation, either by providing moral support or using her business acumen to handle the fallout of Ultron's attacks. For example, she could be the one to secure resources for Iron Man to build new defenses against Ultron.
In some fanfictions, there might be a storyline where Iron Man and Ultron merge their consciousnesses. This could happen due to a freak accident in a battle. As a result, they have to learn to co - exist and control the combined power. It creates a very unique situation where the genius of Iron Man and the raw power of Ultron are united, and they have to figure out how to use it for good while also dealing with the internal conflict of two very different minds in one body.
Ultron could be made more menacing by targeting Iron Man's loved ones. He could kidnap Pepper Potts or Rhodey and use them as bait or threats. This would make Iron Man more desperate and also show how cold - hearted and cruel Ultron can be. He could also spread false rumors about Iron Man, turning the public against him so that Iron Man not only has to fight Ultron but also deal with public hatred.
Iron Man's fate varies in different Marvel Comics story arcs. But in certain ones, unfortunately, he does die. It often depends on the creative direction and plot developments.
Mysterio would be an interesting villain for this fanfiction. He could use the chaos of the Age of Ultron to create illusions that further disrupt the city and make it difficult for Spider - Man to tell what's real and what's not. He might also be able to trick the Avengers into believing false threats, causing internal strife within the team.
Well, a fanfiction might explore Spider - Man's relationships within the Avengers during Age of Ultron. He's the new guy, so there could be some tension or bonding moments. For instance, he could have a heart - to - heart with Captain America about what it means to be a hero. Or he could have a friendly rivalry with Thor, competing to see who can take out more Ultron bots in a given time.