A really exciting storyline might involve time travel. Imagine Iron Man's time - traveling technology getting mixed up and he ends up in Gamora's past, or vice versa. They then have to figure out how to get back to their own times while also dealing with the events and people they encounter in the other's timeline.
Another could be a story where Iron Man mentors Spider - Man in the world of high - tech gadgetry. Spider - Man might be having trouble with his web - shooters, and Iron Man helps him upgrade them to be more efficient and versatile. This could also lead to some humorous moments as Spider - Man tries to adapt to the new tech.
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.
Another storyline could involve Iron Man having a friendly rivalry with Batman within the Justice League. They both are brilliant strategists and inventors. Iron Man might try to show off his more advanced tech compared to Batman's gadgets, leading to some humorous and intense moments in the League.
One possible storyline could be that Infant Stratus has some sort of unique power that Iron Man discovers. Maybe Infant Stratus can manipulate weather in a way that Iron Man wants to study to improve his suit's defenses against extreme conditions. Another could be that Infant Stratus is in danger and Iron Man has to protect this small and vulnerable being, leading to a heart - warming adventure where Iron Man learns about the importance of protecting the innocent at all costs.
One interesting storyline could be Iron Man and She - Hulk teaming up to fight a new, powerful villain that neither could defeat alone. They combine their unique skills, with Iron Man's high - tech gadgets and She - Hulk's brute strength.
Another storyline could involve a time when Iron Man goes rogue for some reason, and Maria Hill has to bring him back in line. This could explore the power dynamics between them and how Maria Hill, as an agent, tries to reason with the self - assured Tony Stark. Maybe she has to use her knowledge of his past and his relationships to get through to him.
A more romantic - themed storyline could also be explored. Imagine Iron Man and Wonder Woman falling in love while on a mission together. Their different personalities - Iron Man's cocky and tech - savvy nature and Wonder Woman's noble and powerful presence - would create an interesting dynamic in a relationship. This could also bring in some conflict as they try to balance their duties and their feelings for each other.
One interesting storyline could be Peter Parker getting involved in the events of Iron Man 2. Maybe he's an intern at Stark Industries and accidentally discovers some of Tony Stark's secrets while trying to help with the arc reactor problem. He could use his scientific knowledge and spider - abilities to assist in a crisis.
In some fanfictions, they might start off as rivals. Iron Man, with his flashy, high - tech suits, could clash with Batman's more low - key, yet highly effective methods. But then they realize they need to work together when a new super - criminal emerges who is a threat to both Gotham and the world at large. This kind of dynamic where they go from distrust to cooperation can be really engaging.
One highly regarded fanfiction might be 'Alliance Beyond the Stars'. It has a great plot where Iron Man and Gamora are forced to work together when their respective planets are threatened by a common enemy. The story does a wonderful job of portraying their initial clashes due to their different personalities and then how they gradually come to respect and rely on each other.