The story could involve Gandalf getting sucked into the fanfiction world. Once there, he meets the young Harry Potter and is amazed by his potential. Gandalf could see the similarities between Harry and some of the heroes he has known in Middle - earth. He might help Harry in ways that the wizards in Hogwarts haven't thought of, like teaching him ancient magic from his own world. And as for the fanfiction part, he could inspire the young writer to create new adventures for Harry that combine the magic of both Middle - earth and Hogwarts.
It could be a really interesting story. Maybe Gandalf, being from Middle - earth, is magically transported to the world of Harry Potter. He stumbles upon a young Harry Potter fanfiction and is quite confused at first. He might start trying to understand the concept of fanfiction and the unique world of Hogwarts described in it. He could then use his wisdom to offer some magical advice to the young writer, perhaps on how to make the story more magical or how to better develop the characters, just like he used to guide Frodo in Middle - earth.
If Gandalf were to enter the world of the young Harry Potter fanfiction, the Hogwarts professors would have mixed reactions. Dumbledore would be intrigued and see Gandalf as an equal, interested in sharing magical knowledge. Snape, on the other hand, would be more guarded and perhaps a bit jealous of Gandalf's presence. The students would be in awe. Harry would see Gandalf as a new source of guidance and protection. Hermione would want to pick Gandalf's brain about all the different kinds of magic he knows. And the overall reaction in the fanfiction world would be one of excitement and a bit of chaos as everyone tries to figure out how Gandalf fits into their world.
If Harry Potter meets Gandalf in fanfiction, it might be a situation where they team up to fight a common enemy. Gandalf's experience in dealing with dark forces like Sauron could give Harry some great strategies to deal with Voldemort. They could combine their powers, like Harry's Patronus charm and Gandalf's light magic, to drive away the darkness.
One possible plot could be that Harry discovers his true parentage as Gandalf's son. He then has to learn about his new heritage and the different types of magic it brings. Maybe he travels between the wizarding world of Harry Potter and Middle - earth to understand his powers better.
The magic in Harry Potter is often more structured with spells and potions. For example, the Avada Kedavra is a very specific and dark spell. In contrast, Gandalf's magic seems more innate and connected to nature. He can call upon the elements like fire or wind. In fanfiction, one could show how Harry might be in awe of Gandalf's more natural form of magic and try to learn from it.
Maybe Gandalf appears in the wizarding world of Harry Potter and helps him to defeat Voldemort. He could use his powerful magic that is different from what they have in Hogwarts.
One idea could be that Gandalf somehow gets transported to the Harry Potter universe. He could become a mentor to Harry, using his vast magical knowledge and wisdom from Middle - earth. Maybe he helps Harry understand some ancient magic that even Dumbledore wasn't fully aware of.
It could be about Harry Potter somehow being transported to the Avatar world. Maybe he discovers he has bending abilities and has to learn to control them while also dealing with the political and social issues in the Avatar universe.
It's hard to say. Gandalf has a lot of raw power and experience. He's faced some really tough foes in Middle - earth. But Harry Potter is no slouch either. He's got his own set of powerful spells and the ability to think on his feet. However, I think Gandalf might have the edge. His magic is more of an all - encompassing force, and he's had centuries to master it.
Well, in such a fanfiction, Harry might grow up with a much different set of magical knowledge. Gandalf is from a very different magical world than the one in Harry Potter. He could teach Harry about more ancient and elemental magics. Harry might also become more of a wandering wizard, like Gandalf, rather than being tied to Hogwarts. He could be more involved in battles against large - scale dark forces from a very young age.
Well, it would be a very interesting scenario. Harry might learn some unique magic from Gandalf. His perspective on magic could expand greatly. He could gain new combat skills and strategies, and perhaps become even more powerful. Gandalf's wisdom would also influence Harry, making him a wiser wizard in dealing with the dark forces.