A possible plot could be that Iron Man's technology somehow gets transported to the RWBY universe. RWBY characters find it and try to figure out how to use it against the Grimm. Iron Man then arrives in this universe to retrieve his tech and ends up teaming up with the RWBY gang.
One plot could be that a villain in the RWBY universe gets hold of Iron Man's blueprints and starts creating their own version of his suits to cause chaos. The RWBY characters, having heard of Iron Man from some ancient lore (or something), try to find a way to contact him. Iron Man then comes to the RWBY world and together they have to stop the villain and also deal with the cultural differences and unique challenges of this new world.
They might be really impressed by Iron Man's tech. Since RWBY has its own unique technology and combat styles, seeing Iron Man's advanced suits could inspire new ideas for them in terms of weaponry and combat strategies.
One possible plot could be that Iron Man is facing a new, powerful enemy. The enemy has a weapon that can disrupt his suit's systems, so he has to quickly come up with a new strategy. 'Ready' could be the phase where he prepares his suit and gathers intel. 'Aim' is when he targets the enemy's weak points, and 'Fire' is the final showdown where he uses all his resources to defeat the enemy.
One idea could be that Iron Man's technology somehow gets integrated into the world of RWBY. Maybe his suits' energy systems could be used to power up the Huntsmen and Huntresses' weapons. For example, Ruby could have a Crescent Rose upgrade with Iron Man's repulsor technology, allowing for more powerful ranged attacks.
Well, it could start with Jack Darby being a huge Iron Man fan in his own Transformers universe. One day, he stumbles upon a strange energy source that gives him powers and abilities similar to Iron Man. He decides to use these new powers to protect his city from the Decepticons in a more high - tech and flashy way than before. Along the way, he might face some challenges like dealing with the Autobots who are skeptical of his new powers, or having to face a new and powerful Decepticon that is attracted to his new - found technology. He also might try to reverse - engineer his powers to create more advanced technology for the Autobots to use in their fight against the Decepticons.
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.
Well, one possible plot could be that Naruto is somehow the son of Iron Man in an alternate universe. Maybe Tony Stark discovers a portal to the Naruto world and has an adventure there, falls in love with a kunoichi, and Naruto is the result. Naruto could then inherit some of Stark's technological genius along with his own ninja skills, creating a whole new set of abilities for him to use in battles against the Akatsuki or other threats.
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 Naruto is transported to the Marvel universe and somehow bonds with the Iron Spider technology. He then returns to the Naruto world with these new powers. His friends are initially confused but soon realize how useful his new abilities are in their battles against the Akatsuki. Another idea is that a mad scientist in the Naruto world creates a device that gives Naruto Iron Spider - like powers, and he has to keep it a secret while using it to protect his village.
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.
Well, the plot might be that in a parallel universe, Harry Potter grows up with a love for both magic and technology. He idolizes Iron Man and decides to create his own version of Iron Man - like tech using magic. This causes a stir in the wizarding world as it challenges the traditional ways. Meanwhile, the muggles start to notice strange magical - technological phenomena. Harry has to deal with the opposition from the wizarding establishment while also protecting his new inventions from falling into the wrong hands, all while being inspired by Iron Man's innovation and heroism.