Dumbledore would be a very wise and calming presence in any interaction with the Scooby Doo gang. He could offer guidance and advice as they try to solve mysteries in the wizarding world. Meanwhile, Scooby might accidentally lead the Hogwarts students to some hidden passages or secrets in the castle because of his nose for trouble. And the ghosts in Hogwarts could either be really helpful to the Scooby Doo gang, like Nearly Headless Nick guiding them around, or be mistaken for the villains they usually chase, causing some comical misunderstandings.
Scooby would probably be really curious about the ponies. He might sniff around them and try to figure out if they were some kind of strange dog - like creatures. Shaggy would be friendly right away, especially if the ponies offered him some food. The ponies, like Pinkie Pie, would be very excited to meet these new and strange visitors. She might throw a big party for them.
The characters' interactions would be full of humor and chaos. Scooby and Jerry could form an unlikely friendship. Scooby might be in awe of how clever Jerry is at evading Tom. Jerry might find Scooby's cowardly but endearing nature charming. Shaggy would be constantly distracted by the food that might be involved in Tom and Jerry's chase. Tom would be frustrated by Jerry's new alliance with the Scooby gang, but also a bit intrigued by their detective work. Daphne would be the peacemaker, making sure everyone gets along. Fred would be using his leadership skills to direct their combined efforts. For example, when they are exploring an old building, Fred tells Tom to keep an eye on the upper levels, Jerry to check for hidden passages, and Scooby and the gang to search the main floors.
The characters can interact in many ways. For example, Naruto could teach Shaggy some basic ninja moves like how to run really fast or be stealthy. In return, Shaggy could introduce Naruto to the joys of Scooby Snacks. Sakura might befriend Daphne, and they could share their experiences of being part of a team.
One interesting concept could be the characters from Scooby Doo getting lost in the wizarding world of Harry Potter. They could be running around Hogwarts, thinking it's a spooky old mansion, while the Hogwarts students are both amused and confused by their presence. Another idea is that the mystery - solving skills of Scooby Doo's gang could be put to use in the wizarding world, like trying to figure out who is behind some strange magical disappearances at Hogsmeade.
Ron might be a bit skeptical at first. He'd be like 'What is this strange, talking pony doing here?' But as he got to know Fluttershy, he'd come to appreciate her kindness. For instance, Fluttershy could help Ron overcome his fear of spiders by using her gentle way of dealing with all creatures. And the Weasley twins would surely find some way to have fun with Fluttershy, perhaps by creating some harmless magical pranks that involved her unique pony - related magic.
Harry would likely be cautious at first. Alucard is a very different kind of being compared to the wizards he knows. Alucard, on the other hand, might be intrigued by Harry's magic. He could start by testing Harry's limits. But as they get to know each other, they might find common ground in their fight against evil. Harry could learn some of Alucard's more ruthless ways of dealing with enemies, while Alucard could understand the importance of friendship and loyalty from Harry and his friends.
Hermione would probably be very curious about Amaterasu. She would start researching about her in the Hogwarts library and try to understand her powers and her place in the other realm. Ron, on the other hand, might be a bit more cautious and a bit in awe. He would probably make some clumsy attempts at greeting her at first. Harry would be more open - minded. He might share his own experiences of facing powerful forces with Amaterasu and learn from her about her own battles against darkness.
Hermione would probably study Pokemon intently, making detailed notes about their abilities and behaviors. Ron might be a bit more hesitant at first but would warm up to them, especially if there was a Pokemon that he could share some food with. Harry would likely form a strong bond with a Pokemon, like he did with Hedwig, and they would go on adventures together.
Hermione would be very interested in studying Rapunzel's hair magic. She would want to research if it could be related to any known magic in the wizarding world. Rapunzel would be eager to learn from Hermione's vast knowledge of spells and potions. Ron might be a bit skeptical at first, but as he sees the practical uses of Rapunzel's hair, like using it to rescue someone from a high place, he would start to accept her and her magic. And together, they could face challenges like fighting off dark creatures or solving magical mysteries.
Harry might be initially cautious about the Triforce. He's used to his wand and magic, so this new, unknown power would be a bit intimidating. But his sense of right and wrong would lead him to explore its potential for good. He would likely try to use it to protect his friends and defeat Voldemort.