A really cool plot might be that Metallo is being controlled by an evil mastermind and Iron Man has to not only fight Metallo but also figure out who is behind the control. Or perhaps a plot where Iron Man and Metallo are forced to team up against a greater threat and they have to learn to work together despite their differences. There could also be a fanfiction plot where Metallo's kryptonite powers start to affect Iron Man's suit in unexpected ways, creating a whole new set of challenges for Iron Man to overcome.
One interesting plot could be where Metallo somehow gets an upgrade that can disrupt Iron Man's technology. Then Iron Man has to rely on his wits and basic engineering skills to fight back. Another could be a scenario where Iron Man has to protect a city from Metallo without using his full - powered suit, making it a more challenging fight.
Iron Man would probably win. He has a highly advanced suit with a plethora of weapons and defensive systems. His suit is constantly evolving and he has the genius of Tony Stark behind it. Metallo, while strong with his kryptonite - powered body, Iron Man could analyze his weaknesses and use his repulsors, missiles and other gadgets to take him down.
One interesting plot could be that they team up to fight a common enemy. Maybe a villain from Spider - Man's world has found a way to cross over into Kim Possible's world and they have to combine their skills to stop it. Another plot could be a friendly competition between them to see who is better at saving the day in a series of challenges. It could also be a plot where Kim Possible is somehow mistaken for a villain in Spider - Man's world and he has to figure out the truth while she tries to prove her innocence.
One interesting plot could be where Flash Thompson's family has a long - held grudge against Spider - Man for some past incident. They team up and use their knowledge of the city and some high - tech gadgets to try and expose Spider - Man's identity. Another plot could be that Flash's family has a secret connection to a super - villain, and they are forced to work against Spider - Man under the villain's threat.
A common plot is the team - up. Fans love to write about Iron Man and the Autobots joining forces to fight a common enemy like the Decepticons or some other powerful villain. Another popular plot is the technology exchange. As mentioned before, Iron Man learning from Transformer technology and vice versa. For example, he might get the idea of self - repairing mechanisms from the Transformers and apply it to his suits. There are also plots where Iron Man has to repair a damaged Transformer using his knowledge of advanced engineering.
A really interesting plot is when Iron Man and Loki are both transported to a parallel universe. In this new world, they are the only ones who know each other from their original universe. They have to rely on each other to survive and find a way back home. Along the way, they discover new things about themselves and their relationship deepens in unexpected ways.
In some fanfictions, they might team up against a common enemy that requires both their unique skills. For example, a new super - villain who has the ability to hack into Iron Man's technology and also has super - strength that Spider - Man has to counter with his acrobatic fighting style. They would have to learn to work together, with Iron Man respecting Spider - Man's instincts and Spider - Man learning to trust Iron Man's strategic plans.
One creative plot is where they swap powers. Iron Man has to deal with Wonder Woman's strength and the power of her lasso, while she has to figure out his high - tech suit. It makes for a really fun and different take on their characters.
One creative plot could be that Peter gets help from an unexpected source. For instance, he teams up with an alien race that has technology that can counter Iron Man's. The alien tech could be something that neutralizes the repulsor rays or disrupts the communication systems in the suit. This would give Peter an upper hand in the fight.
One common plot is Iron Man competing in a high - stakes gaming tournament. He has to face off against powerful opponents using his suit's abilities and his own gaming skills.
In Thor vs Iron Man fanfictions, a really interesting plot twist is when the two are forced to work together against a common enemy. They start off as rivals but then realize that they need each other's skills. Another popular twist is when there is some sort of time - travel or alternate dimension involved. Maybe Iron Man travels to a time when Thor was a young and inexperienced warrior, or Thor finds himself in a dimension where technology is far more advanced than in Asgard and he has to adapt quickly to face Iron Man. These plot twists keep the fanfiction fresh and exciting for readers.