Well, in fanfiction, the writer could use a magic portal to transport Harry Potter to the Star Wars universe. Maybe he's on the run from Voldemort and stumbles upon this strange new world. Once there, he gets intrigued by the Mandalorian culture, with their cool armor and code of honor.
In fanfiction, there could be a prophecy that links Harry Potter to the Mandalorian world. A seer in the wizarding world predicts that he has a role to play in a far - off universe. So, he embarks on a journey to find out more. When he meets the Mandalorians, he is drawn to their loyalty and sense of family within their clans. He might start to see parallels between the wizarding families in Hogwarts and the Mandalorian clans, and this makes him a fan of their culture.
Well, it could happen if Percy somehow gets exposed to the Star Wars universe. Maybe he stumbles upon a holo - projection of a Mandalorian in action while on one of his quests. The honor - bound code of the Mandalorians might appeal to Percy, who has his own strong sense of loyalty and justice.
One possibility is that the Mandalorian's ship, the Razor Crest, could end up near Hogwarts. The students would be amazed by this strange flying machine. The Mandalorian might be searching for a lost Jedi or Sith relic that has some connection to the wizarding world. He could then get involved in the ongoing struggle against Voldemort or other dark forces in the Potter universe.
Well, it could happen if there was some sort of magical cross - over event. Maybe a powerful wizard accidentally casts a spell that transports Harry into the world of Pokémon, specifically the world of Eevee. And there, he gets fascinated by the cute and diverse forms of Eevee.
Well, in some fanfiction, it could be due to dark magic gone wrong. Maybe a spell was cast that had unexpected consequences and turned Harry into a basilisk. Another possibility is that some ancient magic related to the basilisk was misused or backfired on him.
Perhaps he is forced into a new situation where he has to adapt and become a warrior. For example, if Voldemort somehow manages to take over the wizarding world completely and Harry has to flee to a non - wizarding land. There, he discovers that the only way to fight back and survive is to become a warrior. So, he starts training in their ways, learning their combat styles and gradually becomes one of them.
It could be that after the war, Harry feels a need for a new purpose. He might start learning about Muggle healing methods out of curiosity. His quick - learning skills, which he developed during his years at Hogwarts, would help him quickly understand medical concepts. He could also use magic to heal some ailments that normal medicine can't, thus becoming a very unique doctor.
In this fanfiction scenario, Harry Potter could become a hunter due to a spell gone wrong. Maybe he was experimenting with some ancient magic and it accidentally teleported him to a realm where hunting is a way of life. He would bring his sense of justice with him. In the wizarding world, he fought against dark wizards; now, he could use that same determination to protect the innocent in the hunter world. He could also introduce some of his magical knowledge to the hunters, creating a unique blend of magic and hunting skills.
One possibility could be through a magical accident. Maybe a spell gone wrong during a Hogwarts experiment transports Harry to the Bleach universe. There he witnesses Grimmjow's power and charisma and becomes a fan. Another reason could be that Harry, tired of the constant danger in his own world, is drawn to Grimmjow's fearless and brash attitude. It could also be that a cross - universe book or some form of media makes its way into Harry's hands, introducing him to Grimmjow and making him a fan.
Well, he might completely change the power structure in the wizarding world. He could rewrite the rules at Hogwarts, for example, making it more focused on combat training against the dark arts. He might also form a new alliance with the magical creatures, using their unique abilities to strengthen his rule.
Harry could also be a great Quidditch coach. He was an excellent Quidditch player himself. He would be able to train students in the skills of flying, teamwork, and strategy. He could pass on his love for the sport and perhaps even lead the school team to many victories. He would know how to spot potential in young players and help them develop their talents.