Perhaps in this type of fanfiction, Iron Man is corrupted by an ancient artifact. The artifact gives him new powers but also twists his mind. He then starts to believe that he is the only one who can rule the world and begins his descent into villainy. This could lead to a story full of magic and technology combined in a unique way.
Another idea is that an evil Iron Man could create clones of himself to do his bidding. These clones could be used to infiltrate different organizations, including S.H.I.E.L.D. or Stark Industries itself. It would add an element of mystery and paranoia to the story.
One of my favorite ideas is Iron Man time traveling to key moments in the history of the Marvel Universe. For instance, going back to the time when the Infinity Stones were first scattered across the cosmos. He could try to secure them or at least understand their power better, which would change the whole dynamic of the Infinity Saga in the fanfiction world. It would be a high - stakes adventure with lots of potential for different plot twists.
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.
One unusual pairing in One Punch Man One Piece fanfiction could be Nami and Saitama. Nami might try to use Saitama's strength for her own gain, like getting treasure from really tough - to - reach places. It would be a fun dynamic with Nami's wits and Saitama's simplicity.
Perhaps a story where Loki steals some of Iron Man's technology to enhance his own magic. Iron Man then has to track Loki down. Along the way, they both realize they have more in common than they thought, like their over - confidence and intelligence.
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 Naruto having to adapt to the high - tech nature of the armor. He's used to his chakra - based techniques, so learning how to operate the suit's complex systems would be a challenge. Maybe he teams up with Tony Stark (in a crossover sense) who helps him master the armor. And together they face a new threat that requires both ninja skills and Iron Man - style technology to defeat.
One great storyline could be Hawkeye and Iron Man teaming up against a new, powerful villain that has technology - based powers. Their different skills, Hawkeye's archery and stealth, and Iron Man's high - tech suit, would make for an interesting dynamic in combat and strategizing.
One interesting aspect of evil Iron Man fanfiction could be exploring his motives. Maybe he becomes evil due to a failed experiment that warps his mind. In these stories, he might use his advanced technology for malevolent purposes, like taking over the world's economy or suppressing other superheroes.
What about a fanfiction where the Big City Greens are transported back in time? They could end up in the old west and have to adapt to the different way of life. Cricket might get into trouble with the local outlaws, and Tilly could befriend a Native American tribe and learn their ways. It would be a great opportunity to explore how the family would function in a completely different era.
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.