Perhaps a plot where the wizarding world and the Muggle world are on the verge of a catastrophic collision due to a spell gone wrong and a malfunctioning Stark tech. As brothers, Tony and Harry are the only ones who can bridge the gap between the two worlds. They would need to work together to reverse the effects. Harry would have to dive deep into the ancient magic libraries to find a solution, while Tony would be tinkering with his latest inventions. In the process, they would face many challenges, like dealing with wizards who don't trust Muggles and Muggles who are terrified of magic. But through their bond as brothers, they would be able to overcome all these obstacles and save both worlds.
A plot where they have to stop a powerful dark wizard who has also teamed up with a tech - savvy villain. They would use a combination of magic spells and high - tech gadgets to fight. For example, Harry uses the Patronus charm while Tony fires his repulsor rays.
I think the most exciting plot point would be when they team up to fight a common enemy. Imagine a villain who is both a threat to the wizarding world and the world of technology. Harry's magic and Tony's high - tech gadgets would be combined in the most epic ways to defeat this enemy. They would have to learn to work together quickly and trust each other's abilities, which would be a great source of tension and excitement in the story.
Well, Tony's ability to build advanced weaponry and high - tech gadgets would pair really well with Harry's magic. Tony could build a device that detects dark magic, something that the wizarding world might not have. Harry's magic could then be used to neutralize the threats that the device discovers. In terms of abilities, Harry's ability to apparate could be used in combination with Tony's suits to quickly transport them to different locations. Also, Tony's artificial intelligence, like JARVIS, could be integrated with Harry's knowledge of the wizarding world to create a super - intelligent system that can predict and prevent threats from both the technological and magical realms.
At the start, Tony could be a bit skeptical of Harry's abilities. But when Harry shows off a spell, like making a Patronus, Tony would be impressed. They would then start to work together. Harry could use his magic to help Tony get into places that are otherwise inaccessible, and Tony could provide Harry with some cool gadgets. For example, Tony could give Harry a device that helps him communicate with the wizarding world more easily. They would learn from each other and form an unlikely friendship.
It depends on the situation. In the wizarding world, Harry Potter would be more powerful as he can use magic which is a fundamental part of that universe. He can cast spells to defeat enemies, protect himself and others, and manipulate the environment around him.
Well, it would be quite an interesting relationship. Harry, being from the magical world of Hogwarts, and Tony, a genius from the high - tech Marvel universe. Tony would probably be constantly amazed by Harry's magic and might try to find a scientific explanation for it. Harry, on the other hand, would be in awe of Tony's technological inventions. They could learn a great deal from each other. For example, Tony could use his engineering skills to create some new magical - tech hybrids, while Harry could introduce Tony to the wonders of potions and spells that might have applications in the tech world.
Maybe Harry travels to the Marvel universe and tries to learn from Tony Stark. He could be interested in Stark's technology for some reason related to fighting Voldemort, like using it to detect Death Eaters.
In one possible plot, Stark could be kidnapped by a powerful magical - technological hybrid villain. Fem Harry Potter, with her knowledge of both magic and her quick - thinking skills, tracks him down. She has to navigate through the unfamiliar high - tech world of the Marvel universe while also using her magic discreetly. Once she finds Stark, she uses a combination of spells and her own wits to defeat the villain and save him. This could also lead to an interesting friendship or partnership between them, with Harry teaching Stark a bit about magic and Stark introducing Harry to new technology.
One popular trope is the 'fish out of water' where Tony Stark is suddenly in the magical world of Harry Potter and has to adapt. Another is the 'team - up' trope, where they join forces to fight a common enemy, like a dark wizard using technology in a bad way.
In this fanfic, Tony Stark would interact with Harry Potter in a very interesting way. At first, he might be a bit overbearing, trying to control every aspect of Harry's life because he wants to keep him safe. But as he gets to know Harry better, he'd start to respect Harry's independence. Tony would also be fascinated by Harry's magical abilities. He might try to find a scientific explanation for it, and in the process, he and Harry would have many deep conversations. Harry would learn from Tony's confidence and self - assurance, while Tony would learn about the power of magic and the importance of things that can't be measured by science.
One plot idea could be that Tony Stark somehow travels to the wizarding world. He could use his technological knowledge to improve the wizarding devices. For example, he might make brooms fly faster with some kind of engine modification.