Imagine Petal is a girl who is a huge fan of both Harry Potter and Tony Stark. She has the ability to travel between the two universes. In the Harry Potter world, she uses her knowledge of Tony Stark's technology (which she somehow has) to solve some magical problems. In Stark's world, she uses her magic to help Stark with some of his more difficult projects. So, Petal serves as a link between the two very different fictional universes.
In fanfiction that combines Harry Potter and Tony Stark, 'petal' could potentially be used in a variety of ways. It might be part of a magical plant in the Harry Potter aspect, like a petal from a rare flower used in a potion. In relation to Tony Stark, perhaps it could be part of a new technology he's developing that has an aesthetic inspired by a petal's shape. However, without more context, it's hard to be certain exactly how it would be incorporated.
Well, one way they could be related in fanfiction is through a multiverse concept. Maybe there's a rip in the fabric of different fictional universes and Harry Potter and Tony Stark end up in the same world. Harry could use his magic to help Tony with some tech - magic infused technology perhaps. It's a wild idea but that's the beauty of fanfiction.
One way it could happen is through the power of the Time - Turner. Harry could use it to go back in time and prevent the event that injured Tony Stark in the first place. Or he could take Tony to Hogwarts where the advanced magic and potions could be used to heal him. The magic potions like the Felix Felicis could be given to Tony to enhance his chances of a speedy recovery, and the healing spells of Madam Pomfrey could also be very effective.
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 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.
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, one way could be through magic. Harry Potter has a whole arsenal of spells. He could use a protection spell to shield Tony Stark from an incoming attack. Maybe Iron Man's suit malfunctions during a battle, and Harry, being in the right place at the right time, uses 'Reparo' to fix it.
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.
Perhaps the plot could start with their unusual upbringing. Harry grows up with the Dursleys while Tony has his own issues with his father. They both develop their unique skills. When they meet, they realize they are brothers. They then start to combine magic and technology. For example, they could use magic to enhance Tony's suits or use technology to create new magical artifacts. Along the way, they face challenges from those who oppose the mixing of these two very different worlds, like some traditional wizards who don't trust technology and some tech - moguls who fear magic.
Well, one possibility is that Tony Stark might be intrigued by Harry's magic. He could try to find a scientific explanation for it, like he does with everything. Maybe he'd want to incorporate some magic into his tech, creating some super - advanced magical - tech hybrids.