Well, Archie might befriend Harry Potter. They both have a sense of justice and are brave. Archie could introduce Harry to football (or soccer as it's known in some parts of the world), and Harry could show Archie how to play Quidditch. Betty and Hermione could bond over their intelligence and love for books. They might study together in the Hogwarts library.
Veronica would probably be intrigued by the wizarding world's fashion and economy. She could start trading magical items with the wizarding students. Cheryl, with her strong personality, might have some clashes with Draco Malfoy at first. But eventually, they could find common ground in their pride for their respective houses or groups. Jughead would be the outsider looking in, observing all the strange happenings and writing about them in his own unique way.
Hermione would likely be very suspicious of Lucifer from the start. She'd probably be researching ways to send him back to his own realm, constantly trying to outwit him with her vast knowledge. For example, if Lucifer tried to use some of his devilish charm on her, she'd quickly see through it and counter with a well - placed spell.
The characters could interact in some really interesting ways. For example, Maleficent's presence in Hogwarts could cause chaos among the students. Some might be in awe of her, while others would be terrified. Harry would probably try to reason with her, using his own experiences with the dark side. Hermione might offer to help her with her magic if she thought it could lead to a positive outcome. And Ron would be there, providing some comic relief with his clumsy attempts to deal with the situation. There could also be some great duels between Maleficent and the Hogwarts professors as they try to keep the school safe from her unpredictable actions.
The vampires in the Harry Potter world, like those in Knockturn Alley, would be terrified of Blade. They would try to hide from him or even form an alliance with some of the dark wizards to get rid of him. Meanwhile, the Hogwarts professors would be cautious about Blade. Dumbledore might see him as an interesting addition to the fight against dark forces but would also be careful not to let Blade disrupt the balance of the wizarding world too much. Ron would probably be in awe of Blade's cool weapons and fighting style.
Kagome, on the other hand, would be more diplomatic. She could act as a mediator between Inuyasha and the wizards. She might be interested in learning about magic, and the Hogwarts students could be curious about her spiritual powers. Hermione would likely bond with Kagome over their love for knowledge.
Mulan's strong leadership skills would shine in the wizarding world. She might lead a group project in Hogwarts, much to the surprise of some students who are used to more traditional leadership. Harry would see in Mulan a kindred spirit in terms of facing challenges. They would bond over their shared experiences of being different and having to prove themselves. Mulan would also interact with the house elves, and her kindness and respect for all beings would endear her to them. She could teach them some of her own cultural values, while they could introduce her to the unique magic of Hogwarts' kitchens.
Well, Thor and Hagrid would probably get along great. They both have a love for big, powerful creatures. Thor could be interested in the magical beasts in the Forbidden Forest, and Hagrid would be in awe of Mjolnir. Then there's Iron Man and the Weasley twins. The twins would be fascinated by Stark's technology and would try to figure out how to incorporate some of it into their joke products. Stark, in turn, might be amused by their creativity and chaos - causing abilities.
The interaction between the two sets of characters could also be quite comical at times. Imagine Batman trying to ride a broomstick for the first time. He would be all serious and business - like, but it would be a completely new experience for him. And the Hogwarts students would be in awe of Batman's cool gadgets and his Batmobile. Some of the minor characters in the Harry Potter world, like Neville, could gain confidence from seeing Batman's determination. And Batman could learn about the importance of friendship and loyalty from the tight - knit group at Hogwarts.
The characters would have very different cultures and ways of life. For example, the Hobbits are used to a simple, rural life with lots of food and comfort. The Hogwarts students might find this quite strange at first. But they would soon realize that the Hobbits' simple ways also hold great wisdom. Frodo, being a brave Hobbit, would likely be respected by Harry Potter for his courage in carrying the One Ring. Harry, in turn, could show Frodo some of the amazing magic in the wizarding world.
The interaction could be really fun. Imagine Tony trying to teach Harry and his friends how to pilot the Iron Man suit while they try to teach him some basic spells. Hermione would be quick to pick up on the technical aspects of the suit, while Ron would struggle a bit. Tony would probably find the magic spells difficult to master at first, but his determination would keep him trying. Harry would be in the middle, trying to make sure everyone gets along and that they can use their combined skills to face any challenges that come their way.
The characters would likely be initially confused. For instance, Tris from Divergent would be amazed by the magic in the Harry Potter world. Harry, on the other hand, would be intrigued by the concept of the factions. They might start by asking each other a lot of questions to understand their respective worlds better.