Well, if Harry Potter becomes a Shazam fan, he might start comparing the magic in his world to Shazam's powers. Maybe he'd be fascinated by how Shazam gets his powers from the ancient gods. He could even try to find similarities between spells in his wizarding world and the powers Shazam uses. For example, Shazam's super strength could be like the strength - enhancing spells in Harry's world.
Harry could start collecting things related to Superman within the magical world. Since there's no actual Superman merchandise there, he might use magic to create things like Superman's cape or symbol. He could also try to incorporate Superman - like values, like truth and justice, into his own code of conduct at Hogwarts, which could lead to some interesting interactions with his friends and teachers who might not understand this new influence at first.
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.
In a Harry Potter becomes a Pokemon fanfiction, Harry would likely bring his Gryffindor courage to the Pokemon world. He could be drawn to fire - type Pokemon like Charmander because of their similar fiery spirits. He might also use his invisibility cloak to his advantage while exploring the Pokemon habitats. Harry would probably try to understand the Pokemons' powers and abilities in the way he learned about magic at Hogwarts. He could also introduce the concept of houses to the Pokemon trainers he meets, creating a new kind of bond among them based on the values of Gryffindor, Hufflepuff, Ravenclaw and Slytherin.
If Harry Potter becomes a lantern fanfiction, there could be some really interesting crossovers. Maybe Harry could use Green Lantern's power ring in the wizarding world. He might use it to create magical constructs that combine with his spells, like a Patronus made of green energy. It would change the whole dynamic of his battles against Voldemort and his Death Eaters.
Well, he may face a lot of challenges at first. The other Gryffindors might view him with suspicion. However, as a Slytherin, Harry could start to explore the more complex magic that Slytherin students are often associated with. He might befriend some of the pure - blood families in Slytherin, which would give him a different perspective on the wizarding world's politics. And he could end up being a bridge between the two houses that are often at odds in the original story.
In such a fanfiction, Harry Potter as a Hollow might lose his sense of self and humanity. He could be driven by basic instincts rather than his usual moral compass. This would likely lead to a very different dynamic in the wizarding world as his friends would be faced with either trying to save him or having to oppose him.
In such a fanfiction, Harry might discover new powers related to being a monster. For example, he could have enhanced strength or senses. Maybe he would struggle to fit in with his old friends at Hogwarts as they might be afraid of his new form.
Well, if Harry becomes a vigilante, he would probably form his own group of like - minded wizards. They could work together to fight against the dark forces that are being overlooked by the authorities. He may also develop new spells or magical techniques that are specifically designed for his vigilante activities. And his friends, like Hermione and Ron, would either support him wholeheartedly or try to persuade him to work within the system, which could lead to some interesting character dynamics.