One possible plot could be that Iron Man, Tony Stark, travels back in time and meets his father Howard Stark. He could try to prevent some of the events that led to Howard's death and in the process, learn more about his father's early inventions and ideas. Maybe they collaborate on a new piece of technology that changes the future of the Stark family.
Iron Man and Howard Stark would likely start with a bit of shock. Howard might be amazed at the technology Tony has created, and Tony would be in awe of seeing his father alive (if it's that kind of scenario). They'd probably exchange some witty remarks, with Howard being a bit more old - fashioned in his speech. Then they'd start discussing technology, with Howard offering some of his classic insights and Tony showing off his modern advancements.
There's no official indication in the main Marvel canon that Howard Stark reads Iron Man fanfiction. Howard was a brilliant inventor and businessman, mainly focused on his scientific and entrepreneurial pursuits. Fanfiction is a modern and often fan - created concept that might not have been part of his world view. However, in some alternate universes or fan - speculations, it could be possible, but still not a common or established idea.
He might be confused at first. Howard Stark was from a different era and fanfiction was not a thing during his time. But if he understood the concept, he might be flattered that his son's story had inspired so much creativity among the fans. He could also be critical as he was a perfectionist, and might not like some of the liberties taken in the fan - created stories.
Maybe it's a tale where Howard Stark is somehow able to observe Iron Man's adventures from a hidden vantage point, and his reactions shape the story. Or it could be a story set in a parallel universe where Howard Stark has a front-row seat to all of Iron Man's heroic deeds.
One possible plot could be that Iron Man and Batman initially clash due to their different methods. Iron Man, with his high - tech and flashy approach, might see Batman's more brooding and stealthy style as old - fashioned. But then they realize they are both fighting for justice in their own cities. They could team up to take on a common enemy like a powerful tech - savvy criminal who is causing chaos in both Gotham and New York. Maybe they combine their skills, Iron Man's advanced weaponry and flight capabilities with Batman's detective skills and knowledge of the criminal underworld.
One possible plot could be that Izuku, with his determination and unique quirk, somehow gets transported to the Marvel universe. There, he meets Iron Man. Iron Man, being the genius he is, is initially skeptical of Izuku but soon realizes his potential. They might team up to fight a common enemy, perhaps a villain who has technology - based powers that combine aspects of both their worlds.
One possible plot could be that Batman and Iron Man meet when a new global threat emerges that requires both their skills and resources. Maybe it's a high - tech villain who is stealing advanced technology from Wayne Enterprises and Stark Industries. They start off distrustful of each other, with Batman being suspicious of Iron Man's more flamboyant and open - ended methods, and Iron Man thinking Batman is too much of a lone wolf. But as they work together, they learn from each other's strengths. Batman teaches Iron Man about stealth and hand - to - hand combat, while Iron Man shows Batman new ways to use technology for crime - fighting.
You could write a story about Howard Stark's influence on Iron Man's early years and how it shaped his future.
In many fanfictions, they have heart-to-heart conversations about family and legacy.
There's also 'Howard's Shadow'. This fanfic focuses on Tony's struggle to live up to his father's reputation. It has a lot of flashbacks to Howard Stark's days, which gives great context to the Iron Man story. It's really interesting to see how Tony navigates the challenges while being in his father's shadow.