Well, they might use their genius to master magic faster than others. For example, they could quickly figure out complex spells and potions that usually take years to learn. They might also come up with new magical theories or inventions, like a more efficient way to travel using magic.
If a genius oc was reborn in Harry Potter fanfiction, they would likely have a great impact on Hogwarts. They could introduce new academic programs or improve the existing ones. Their unique perspective might lead to the discovery of new magical creatures or the unlocking of hidden magical powers within students. They could also revolutionize the way magic is taught, making it more accessible and understandable for everyone.
The genius oc could potentially change the course of events in the Harry Potter universe. They might befriend Harry and his friends and use their intelligence to help them in their battles against Voldemort. They could analyze the Death Eaters' strategies and come up with counter - attacks that no one else had thought of. Maybe they'd even find a way to end the war more quickly and with fewer casualties.
Well, he might bring his magic skills into the Naruto world. Maybe he could use spells to enhance his ninja techniques. For example, he could use a spell to make his shuriken fly faster or more accurately.
Well, he might use his magic in ways that would shock the shinobi world. Maybe he could combine spells with ninjutsu to create some really powerful attacks.
Well, he might use his magic in the Marvel universe in really interesting ways. Maybe he'd team up with Doctor Strange and they'd exchange knowledge about different kinds of magic. He could also use his quick - thinking and combat skills learned from fighting Voldemort to face Marvel villains.
Their intelligence could manifest in spell - casting. They might be able to modify existing spells or create new ones. For instance, they could combine a levitation spell with a protection charm to create a unique defensive spell.
Well, he might bring his demigod skills to Hogwarts. He could be really good at Defense Against the Dark Arts, using his combat experience from fighting monsters. And his ability to adapt quickly, which he had in the Percy Jackson world, would help him in the wizarding world too.
Well, he might bring his ninja skills to Hogwarts. He could use his chakra control to perform amazing feats in magic classes, like enhancing his spellcasting speed. Also, his determination would make him a great Gryffindor. He'd probably befriend Harry and the gang, and teach them some ninja moves for self - defense against the Dark Arts.
Well, he might bring his magical skills into the world of vampires and werewolves. Maybe he'd use magic to deal with the complex relationships between the Cullens and the werewolf pack. He could also introduce new magical elements to the Twilight world, like potions to counteract vampire venom or spells to protect humans from vampire attacks.
If Harry Potter was reborn in the Game of Thrones universe, it would be a total game - changer. His magic skills would make him a target for some who fear the unknown and a valuable ally for others. He might try to teach some of the people in Westeros about magic, which could either be seen as a great boon or a heresy. And he would surely have his own moral code that would clash with the cut - throat nature of the Game of Thrones world, leading to many interesting storylines.
If Harry Potter were reborn as a Jedi, it would be an amazing combination. He might be a bit of an outlier in the Jedi world. His Gryffindor courage would make him a fearless Jedi. He could use his knowledge of magical creatures to perhaps understand some of the more unique creatures in the Star Wars universe. Also, his ability to see the good in people, like he did with Snape, could translate into him being able to sense the light side in those who might be on the verge of turning to the dark side.
He might also be a bit confused at times. Some fanfictions deviate a lot from the real events in his life. For example, if there's a fanfiction where he has a completely different upbringing, it would be strange for him to read about. He could also feel a sense of flattery that so many people are interested in his story and want to create their own versions of it.