One common scenario is when his technology fails him. Since Tony is so reliant on his tech, if it malfunctions at a crucial moment, like his suit not working during a battle, it can lead to a breakdown. He may feel like he has lost his edge and is no longer able to protect himself or others.
Illness or the threat of his own mortality can trigger a breakdown. Tony has always been a fighter, but if he discovers he has a terminal illness or is facing a situation where his life is in immediate danger and he can't find a way out, he may break down. He has so much he wants to do and protect, and the idea of being unable to do so because of his own physical limitations can be too much to bear.
In fanfiction, Tony Stark's breakdown can often be triggered by his complex past. His experiences in the war, his guilt over the weapons he once created, and his constant fear of not being able to protect those he loves can all contribute to it. For example, in some stories, the death of a close friend like Rhodey might send him into a downward spiral of self - blame and despair.
One common scenario is when Tony misses important events in his daughter's life like her birthdays or school plays because he's off saving the world. His daughter feels unimportant and unloved, thus hating him.
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.
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.
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.
One scenario could be when the Avengers accidentally damage his technology. Tony Stark is very attached to his inventions, and if, for instance, Thor's hammer smashes one of his high - tech gadgets during a battle, he might get angry at the Avengers for not being more careful. His anger would stem from the fact that he spent a lot of time and resources creating those things.
One interesting scenario could be Tony Stark using his superior intellect to outwit Thanos in a battle of wits rather than just brute force. He might create a device that can nullify the power of the Infinity Stones for a short time.
Obviously, the daughter herself is a central character. Pepper Potts often appears as she was close to Tony Stark. Happy Hogan might also be there, as he was part of Tony's inner circle. And the Avengers like Captain America, Thor, and Black Widow could show up as they were friends or colleagues of Tony Stark.
Family relationships are also a big theme. These fanfictions explore how Tony Stark, being a busy superhero and genius, still manages to be a father. It shows the love, the arguments, and the growth within the family unit.
Happy Hogan could also be an important character. He would be concerned about Tony's well - being and might be involved in tasks like getting Tony the things he needs during his recovery. Additionally, new characters might be introduced in the fanfiction, such as a prosthetics expert who becomes Tony's mentor in understanding and making the best use of his new prosthetic limb.