Well, Cedric Diggory could be a friend. He is popular and kind, and would welcome them. Cho Chang might also be their acquaintance or friend as she is friendly and sociable. And then there are the Hufflepuff students in general. Since Hazel is very kind - hearted like many Hufflepuffs, she could easily make friends within that house, and through her, Percy and Piper could also have connections with the Hufflepuff students.
Well, perhaps they could be exchange students. Percy might use his strategic skills from Camp Half - Blood in Hogwarts' challenges. Hazel could show off her knowledge of ancient magic which might be similar in both worlds. Piper might use her charm - speaking to deal with the Hogwarts students and even some magical creatures. They could also form an unlikely friendship with the Hogwarts students and get involved in the fight against the Dark Arts.
Percy would probably be very friendly and try to form study groups with the Hogwarts students. He's used to being a leader, so he might even start some new clubs. Thalia would be a bit more standoffish at first, but once she gets to know some students, she'd be very protective of them. Nico would be the mysterious one. The Hogwarts students might be a bit scared of him at first, but once they see his softer side, they'd become friends.
If Percy and Annabeth go to Hogwarts in fanfiction, it could be a wild adventure. Percy would likely be shocked by the lack of demigod - specific threats at Hogwarts. He might try to use his powers in the wrong way, like using his water powers to clean the Great Hall. Annabeth would be busy exploring the library and trying to figure out how the magic in Hogwarts works compared to Greek magic. They could end up teaming with Harry Potter and his friends to face a new kind of threat that combines the worlds of Greek mythology and Hogwarts magic.
In this kind of fanfiction, they might face challenges adjusting to the new magical environment. Percy could be confused by the different types of magic in Hogwarts compared to his own demigod powers. Nico might struggle with the more structured and rule - bound nature of Hogwarts. Thalia could find it interesting but also be a bit rebellious against some of the Hogwarts traditions.
In this fanfiction scenario, Percy's adaptation to Hogwarts would be a complex process. He'd first have to deal with the cultural shock of a new magical world. The Hogwarts houses would be different from the cabins at Camp Half - Blood. He'd need to figure out which house he belongs in. His skills with a sword might not be as useful as in his own world, but he could learn to use magic to enhance his combat abilities. Also, he'd have to make new friends and enemies, and learn how to navigate the social politics of Hogwarts while still holding on to his own identity as a demigod.
Percy's water - controlling powers could be really useful in potions class. He could easily manipulate the water needed for various potions, which might make him a star student in that area. His ability to communicate with sea creatures could also come in handy if there are any magical water - based creatures at Hogwarts. Annabeth's wisdom and strategic thinking would make her excel in classes like Defense Against the Dark Arts. She could come up with great plans to defeat any dark magic threats.
Sakura might become friends with Hermione. They both are intelligent and interested in learning, so they could bond over books and studying magic. Sasuke, well, he might be a bit more aloof, but he could end up having an odd friendship with Harry. They both have a sense of responsibility and a past filled with challenges, so they might understand each other on some level.
Well, perhaps Percy and Nico could be transferred to Hogwarts through some sort of magical accident. Maybe they'd have to deal with the different magical system there compared to their own world. They could make new friends among the Hogwarts students and get involved in the typical Hogwarts adventures like the Triwizard Tournament or dealing with a new dark threat.
Naruto would be very friendly and outgoing, quickly making friends with many Hogwarts students. He'd be eager to share his ninja stories and learn about magic from them. Sasuke would be more aloof at first. He might only interact with students who he sees as strong or useful. Gaara would be a bit of an enigma. Some students might be intimidated by him, but those who get to know him would find his quiet strength appealing.
They would surely meet Harry Potter. Harry could be curious about their different magical abilities and background. Hermione would also be there, probably peppering them with questions about their own world's magic. Ron might be a bit skeptical at first but warm up to them eventually.