Well, he may feel a bit of envy. The Percy Jackson world has its own unique charm. Harry might envy the way Percy and his friends interact with the Greek gods. However, he would also be critical. He would notice differences in the way the stories are told, the pacing, and the moral lessons in the fanfiction compared to his own experiences at Hogwarts.
He might be quite intrigued. Harry Potter is from a magical world himself, and seeing the different magical concepts and adventures in Percy Jackson fanfiction could be fascinating for him. He could compare and contrast the two magical universes, like how the magic is used, the different mythologies involved, and the types of challenges the characters face.
Percy could find it both strange and fascinating. Since he has his own set of adventures and challenges, reading about Harry Potter's world through fanfiction might make him think about how different yet similar their situations are. He might be amused by some of the out - of - the - box ideas in the fanfiction.
He might be really confused at first. Harry Potter's world is full of magic wands, spells, and Hogwarts, while Star Wars has lightsabers and the Force. But he could also be intrigued by the different kind of space - faring adventures in the Star Wars fanfiction.
He might be quite intrigued. Harry is used to his own magical world, and reading about Percy's adventures would expose him to a different kind of magic system. He'd probably compare the demigod world to the wizarding world, like how they both have special powers but in different ways.
Harry might be amazed at the action - packed scenes in RWBY fanfic. The battles are so different from what he experiences in Hogwarts. He could be both fascinated and a little bit bewildered by the complex relationships between the RWBY characters. He might also wonder about the role of the different academies in RWBY, as it's similar to Hogwarts in some ways but also very different.
He might try to incorporate some of the Percy Jackson elements into his own adventures. For example, the idea of having a closer relationship with the gods could be something he'd think about. Maybe he'd start looking for ways to communicate with the magical beings in his world in a more direct way like Percy does with the Greek gods.
He might be shocked and a bit disturbed. Percy is a heroic character, and seeing a 'dark' version of himself in fanfiction would be quite jarring. It's like looking into a distorted mirror of his identity.
He might be amused. Percy has his own set of adventures, but reading about Magnus' would probably make him chuckle at the different takes on Norse mythology in the fanfiction.
The settings are different. Harry Potter is set mainly in the UK, at Hogwarts School of Witchcraft and Wizardry and other wizarding locations. Percy Jackson is set in modern - day USA, with a lot of action taking place at Camp Half - Blood. Also, the magic systems vary. In Harry Potter, there are spells, potions, and magic wands. In Percy Jackson, the demigods have powers related to their godly parentage like Percy can control water because his father is Poseidon. So they are clearly not related in a fanfiction way.
One thing Percy Jackson could like about Harry Potter fanfiction is the different types of friendships depicted. In his world, he has his group of demigod friends, but in Harry Potter, the friendships between the trio and others at Hogwarts have their own unique qualities. The fanfiction might also show different interpretations of how magic affects relationships, which could be thought - provoking for Percy. He may also be interested in the way the Harry Potter fanfiction authors handle the theme of destiny, as it is also a significant theme in his own story.
In fanfiction, if Percy Jackson met Harry Potter, they might first be a bit wary of each other. Percy, with his water - based powers and Greek mythology background, and Harry, with his magic from the wizarding world. But soon they could realize they have a lot in common. Both are heroes in their own right, facing great challenges and having a strong sense of justice. They could team up to fight a new threat that combines the dark forces from both their worlds, like a wizard who has harnessed the power of Greek monsters.