How would the characters in Harry Potter react if Harry turns into a cat in fanfiction?

His friends would be quite shocked. Neville might be a bit scared at first, thinking it's some new dark magic. But then they'd all come together. Ginny would probably be the one to try and comfort 'cat - Harry' by giving him some fish or milk, thinking that's what cats like. And they'd all be determined to get him back to normal as soon as possible.

The students would have a wide range of reactions. The Gryffindors might be more vocal about their surprise, with some being more accepting than others. The Slytherins would be more divided. Some of Snape's loyal Slytherin students might be protective of him, regardless of his new form, while others might see it as a sign of weakness. Draco Malfoy would probably be initially disgusted but as he sees Snape still maintaining his authority, he might change his attitude. And the Hufflepuffs would generally be more kind - hearted and accepting, perhaps offering Snape small tokens of support like homemade treats or kind notes to help him through this difficult change.

Hermione, on the other hand, would likely have a more critical view. She'd analyze the fanfictions for their accuracy in terms of magic lore and Hogwarts traditions. If there were any inaccuracies, she'd be quite perturbed. However, she might also appreciate the creativity that goes into some of the well - written ones that add new dimensions to their magical world.

Ron would probably be both shocked and a bit awestruck at first. He might make some typical Ron - like jokes to ease the tension, like 'Blimey, Harry, you're a dragon! At least you'll be good for scaring off Snape now!'. But deep down, he'd be worried and determined to help Harry get back to normal.

The Death Eaters and their sympathizers would be terrified. Harry, as the overlord, would be a major threat to their ideology. Voldemort, if he somehow still existed in this fanfiction, would be in direct opposition to Harry. However, some of the more neutral characters, like Luna, would probably see Harry's new role as an opportunity for positive change in the wizarding world and would be happy to support him in his endeavors.

Hermione would probably be very curious. She'd immediately start researching in the library to find out if there are any known cases of wizards having tails and how to reverse it if it was an unwanted condition. Ron, on the other hand, would likely make some jokes at first, but then be supportive. He might say something like 'Well, at least it makes you stand out even more, Harry!'. Dumbledore would be his usual calm self. He might see it as a sign of something greater or a test for Harry, and offer some cryptic advice.

Hermione would probably be both curious and worried. She'd want to research all about Harry's half - demon nature to find out what it means and how to help him. Ron, on the other hand, might be a bit more hesitant at first. He might be a bit scared but would eventually come around because of his loyalty to Harry.

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.