Often, you'll find characters who have a personal connection to Stark. Maybe a former employee of Stark Industries who has a deep sense of loyalty and joins the protection squad. Another could be a superhero friend of Stark's who decides to help out with the protection efforts. There might also be a character who was saved by Stark in the past and is now determined to return the favor by being part of the squad.
In some fanfictions, there could be new and original characters created specifically for the protection squad. These characters could have unique powers or abilities. For example, a character with the ability to manipulate energy fields to create shields around Stark. Or a character who can predict incoming threats based on some sort of precognitive ability.
One interesting story could be about the squad preventing a super - villain from stealing Stark's latest technology. They use their unique skills and teamwork to outwit the bad guy.
Well, Nebula herself is likely to be one of the main characters interacting with him. They might have some interesting conversations about the technology they both use or their experiences in space.
One common character paired with him is Bruce Banner. They could be gaming buddies, with Bruce using his scientific knowledge to help Tony improve his games or vice versa. Another is Pepper Potts. She might be shown as someone who tries to get Tony to take a break from his intense gaming sessions.
There could be the foster parents. Maybe they are a kind - hearted couple who try their best to understand Tony despite his quirks. Another character could be a foster sibling who is initially jealous of Tony's intelligence but later becomes his friend.
Obviously, Tiny Tony Stark is the main character. But often, other characters from the Iron Man and Avengers universe also appear. Pepper Potts might be there, trying to help Tiny Tony or just being concerned about his new state. Sometimes, Rhodey also shows up, being Tony's friend and all.
Obviously, Tony Stark is the main character. But there could also be other characters like Pepper Potts, who might be his advisor or partner in ruling the world. Maybe Rhodey would also play an important role, helping Tony with military - related matters.
Most likely, Tony Stark himself is a main character as the story seems to revolve around him fainting while being sick. Pepper Potts would probably be another important character as she is often by Tony's side in these situations. And the other Avengers like Steve Rogers, Natasha Romanoff, etc. could also be involved as they are his friends and teammates.
One common character paired with him could be Pepper Potts. Their relationship could be explored in a new light with Tony having psionic powers. Maybe Pepper has to deal with a more powerful and sometimes unpredictable Tony.
His parents, Howard and Maria Stark, are very common. They play important roles in shaping Tony's childhood. Jarvis, the family butler, also often appears. He could be the one to encourage Tony's scientific pursuits or keep him out of too much trouble.
Pepper Potts is often a main character. She was Tony's love interest, so in fanfiction where he's dusted, she would be deeply affected. She might be driven by grief and love to find a way to bring him back. Another is Rhodey. As Tony's close friend, he would be dealing with the loss and perhaps trying to continue Tony's work. And of course, the remaining Avengers like Captain America, Thor, and Black Widow would also be main characters as they navigate a world without Tony Stark.