Sure did. Tony Stark's actions led to the creation of Ultron in the comic universe. It was a decision that had significant consequences for the storylines.
Yes. Tony Stark's experiments and innovations unfortunately resulted in the birth of Ultron in the comics. This had significant consequences for the superhero world.
Writers often start by finding a common ground between Tony Stark's world and the other universe they want to cross over with. For example, if it's a crossover with the LOTR universe, they might focus on the idea of Tony's technology in a world of magic. They then play with the characters' personalities. Tony's arrogance could clash or blend well with the characters in the other universe.
Pepper Potts could be a big help. She knows Tony so well, and she could try to jog his memory by showing him things from their past together, like pictures or mementos. Rhodey could also be there for him. He could tell Tony stories about their military days and how they became friends, which might trigger some memories.
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.
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.
It could be Rhodey. As Tony's long - time friend and fellow Avenger, Rhodey would be eager to see him and would likely be among the first to be informed of his return.
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.