In a fanfiction, their relationship could be very interesting. Since both are wealthy and use their resources for different forms of heroics. They might initially clash due to their different approaches. Bruce is more about the shadows and secrecy, while Tony is all about the flashy display of his technology. However, as brothers, they could learn from each other. Maybe Bruce could teach Tony about the importance of anonymity in fighting crime, and Tony could introduce Bruce to new ways of using technology for surveillance. Their brotherly bond could also be tested when they face a common enemy that targets their respective cities or companies.
Well, it could be really interesting. Tony's high - tech world and Sherlock's deductive reasoning skills would create a unique dynamic. Maybe they'd use Tony's tech to solve crimes in a more advanced way. For example, Sherlock could use Iron Man's scanners to analyze crime scenes faster. And their personalities would clash and mesh at the same time. Tony's flamboyance and Sherlock's more reserved nature would make for some great banter.
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.
One plot idea could be that they discover their 'brotherhood' through some magical or scientific accident. Maybe they have to team up to stop a common enemy, like an ancient, powerful being. They could start off hating each other because of their different personalities (Tony's brashness vs Loki's slyness), but as they face challenges together, they learn to respect and care for each other.
One way could be through magic-meets-technology. Maybe Harry discovers Stark Industries while on a trip to the Muggle world. Tony, being intrigued by Harry's magic, starts to incorporate some magical elements into his tech. They could also team up to fight villains that are a threat to both the wizarding world and the normal world.
Well, if Tony Stark and Harry Potter were brothers in a fanfiction, their relationship could be quite complex. Tony, with his technological genius, might initially be a bit dismissive of Harry's magic, seeing it as something not based on scientific principles. But as they get to know each other, Tony could start to see the potential in magic for his inventions. Harry, on the other hand, would be fascinated by Tony's high - tech world. They could learn from each other. For example, Tony could help Harry with creating more advanced magical devices using his engineering skills, while Harry could introduce Tony to the hidden magical world, opening up new possibilities for Tony's research.
Here's a plot idea. A valuable artifact has been stolen and it has both scientific significance (which interests Tony) and historical importance (which interests Sherlock). They start looking for it separately at first, but then realize they need to work together. Tony's technology helps them track down the general location of the artifact, but Sherlock's ability to read people and situations helps them figure out who has it and how to get it back. Along the way, they also deal with their own personal issues, like Tony's struggle with his public image and Sherlock's difficulty in relating to others in a more emotional way.
There could be an adventure where they have to infiltrate a secret society. Bruce uses his stealth and martial arts skills to get in unnoticed, while Tony uses his charm and high - tech gadgets to gather information from the inside. They could also have an adventure that involves time travel. They accidentally get sent back in time and have to find a way to get back to their own era. Along the way, they meet their ancestors and learn more about their family history, which strengthens their brotherly bond as they realize how much they have in common with their predecessors.
Their relationship could develop in a rather chaotic way. Loki might play pranks on Tony using his magic, which would annoy Tony at first. However, as Tony gets used to Loki's antics, he starts to see the humor in it. Meanwhile, Loki starts to admire Tony's determination and ability to create amazing things. They could have a love - hate relationship for a while, until a big event, like an alien invasion, forces them to fully trust and support each other.
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.