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.
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.
At first, Harry would probably be in shock. He's been through so much in his life, and this would be a huge new development. He might be a bit hesitant and scared, not sure if he's ready to be a father. But as time goes on, his Gryffindor courage would kick in and he'd start to take on the role with determination.
Snape would likely be angry at first. Harry has always been a source of trouble in his eyes, and running away would just add to that perception. He might mutter some sarcastic remarks under his breath about Potter's irresponsibility.
Hermione would probably be very skeptical at first. She would want to research every aspect of this new discovery. Ron would be more likely to be angry or at least very confused. He has always seen the Malfoys as the enemy, so the idea of Harry being one of them would be hard to swallow. Draco, on the other hand, would be quite smug. He might think that Harry is finally realizing that the Malfoys are superior in some way.
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.
In fanfiction, their meeting could start with a bit of confusion. Harry, coming from his world of wands and spells, might not immediately understand Gandalf's more nature - based and ancient magic. But as they start to talk, they would find common ground in their fight against evil. Gandalf could sense the great burden Harry carries, just like Frodo did in Middle - earth. And Harry would be amazed by Gandalf's tales of far - off lands and great battles. It would be a meeting that bridges two very different magical universes.
Some characters might be excited. They could see him as a new source of knowledge and magic.
The Weasley family would have different responses. Mrs. Weasley would be motherly and concerned about this strange new person. Fred and George would see her as a source of new ideas for their pranks and inventions. Ginny would look up to her as a strong female figure, much like she does with Hermione. And all of them together would gradually get used to having Powergirl around, and they would all grow from the experience of interacting with someone from a completely different world.
Batman would probably be very cautious at first. He'd want to study Harry and his magic to see if it could be a threat or an asset. The Joker might see Harry as a new plaything, a strange and magical being to toy with. Commissioner Gordon would likely be intrigued and hope that Harry could help clean up Gotham's streets.
Some characters might be quite amused. For example, Hermione would probably analyze the fanfiction from a logical perspective, critiquing the plotlines that involve ships. Ron, on the other hand, might be a bit bewildered at first but then find it rather entertaining. Harry himself could be either indifferent or intrigued, depending on how the ships are portrayed. If it's a ship that he has a personal connection to, like his parents, he might be more interested in seeing how the author has envisioned their relationship in the fanfiction world.