He might be really intrigued. Merlin's world has its own magic system and characters. Harry could find similarities and differences between the two magical universes in the fanfiction. Maybe he'd get some new ideas about magic from it.
If Harry Potter watches Merlin fanfiction, it could be a very interesting experience for him. Firstly, he would notice the different historical settings. Merlin is set in a more medieval - like time, while Harry's world has a more modern - hidden - in - the - normal - world kind of setting. He would also see different types of magic use. In Merlin, magic seems to be more of an innate power that has to be hidden, while in his world, magic is taught in schools. Harry might be inspired by Merlin's adventures and the way he deals with the challenges in his world, which could give Harry a new perspective on his own magical adventures.
Well, if Harry Potter were to watch Merlin fanfiction, he'd probably be a bit confused at first. The way magic works in Merlin's world is different from Hogwarts. But as he reads on, he could start to enjoy it. He might compare the wizards in Merlin's world to those at Hogwarts, like how Merlin uses his magic in secret compared to how wizards in Harry's world can use it more openly in the right places.
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.
He might be really surprised. Fanfiction often contains different interpretations of the characters and the story. He could be amused by some creative ideas, or perhaps a bit confused if the fanfiction goes too far from the original story he knows.
If Harry Potter watches anime fanfiction, he could end up having some really strange dreams. The vivid and often wild ideas in anime fanfiction might seep into his subconscious. He might dream about flying on a broomstick while also having some of the crazy powers or going through the strange situations that are common in anime stories. Also, he could potentially get some new ideas for dealing with his enemies in the wizarding world. Maybe he'd learn about some creative strategies from the anime fanfiction he reads that he could adapt to his own battles against Voldemort and his followers.
Well, it could be really strange. Harry Potter is from a world of magic and wizardry, and Blackadder is a very different kind of comical and often satirical world. If Harry were to watch Blackadder fanfiction, he might be quite confused at first. He'd see characters and situations that are so different from Hogwarts and the wizarding world. Maybe he'd find the humor in it, or perhaps he'd just shake his head and wonder why muggles come up with such odd things.
He could start comparing the heroes in Overwatch to the wizards he knows. For example, he might see Tracer's time - traveling abilities and think of it like a strange form of time - turning magic. He may also be a bit shocked at the more violent and action - packed nature of the Overwatch world compared to Hogwarts. Overall, it would be a very strange and eye - opening experience for him.
Well, if Harry Potter watches Avengers fanfiction, he could gain some new perspectives. He might find the technology in the Avengers' world fascinating as it's so different from the magic he's used to. Maybe he'd even start thinking about how the two could be combined in some way to defeat greater threats, both in his world and in the fictional Avengers' world.
In fanfiction, if Harry Potter watches cartoons, he might be amazed by the colorful and magical worlds that are different from his own. He could gain new ideas or inspiration from the unique storylines and characters in the cartoons, which might even influence his actions and thoughts in his own wizarding world.
Well, he might be shocked by how things turn out. He could see the fates of his friends, like whether Ron and Hermione's relationship endures. Maybe he'd find out if Hogwarts still stands strong or if there are new threats to the wizarding world that he hadn't anticipated.
Well, he might be really intrigued. Harry is used to magic in his own world, but the magic and the world of HTTYD in the fanfiction could be a whole new and exciting experience for him. He might start comparing the different types of magic, like how the wizards in his world use wands and spells, while in HTTYD there are dragons with their own special abilities.
He might be really confused at first. Pokemon is a very different world from the wizarding world of Harry Potter. The concepts like Pokeballs, Pokemon trainers and different Pokemon species would be alien to him. He might be intrigued by the unique adventures and relationships in the Pokemon fanfiction though.