Well, it depends on how the fanfiction portrays it. In some cases, his friends could turn against him completely. They might see him as a danger to the wizarding world. But in more positive portrayals, they would see this as just another challenge for Harry to overcome. They would be there for him, but it would be different. For instance, they might have to help him find new ways to do magic since the vampire bite could potentially affect his magic in some ways. Their relationship would be a mix of loyalty and a new kind of understanding as they all deal with this unexpected change in Harry.
The plot would change in many ways. Harry being bitten by a vampire means he'd have different needs and abilities. His magical training at Hogwarts might be put on hold as he tries to understand and control his vampiric instincts. He could form alliances with unexpected characters, perhaps other vampires who oppose the dark wizards. His journey would become more about self - discovery and finding a balance between his wizard and vampire sides. The existing conflicts in the story, like the war against Voldemort, would be intertwined with his new situation. For example, Voldemort might try to use Harry's new nature against him, or Harry could use his vampire powers to gain an advantage in the fight.
Over time, they would probably come to accept Harry for who he is. Their friendship could become even stronger as they support Harry through his new challenges. They might even start to fight for werewolf rights within the wizarding world because of Harry's situation.
In fanfiction, if Harry Potter were bitten by a vampire, he might gain some vampire - like abilities. For example, he could have enhanced strength and speed. His magical abilities might also be affected, perhaps enhanced in some strange ways or combined with his new vampiric nature. However, he would also face the challenges that come with being a vampire, like the need to feed on blood. This could create a whole new set of moral and ethical dilemmas for him, as he is a hero who has always fought for good. And his relationships with his friends at Hogwarts would surely be put to the test as they try to come to terms with his new state.
On the other hand, Dumbledore could use Harry's new situation as a werewolf to his advantage in the fight against Voldemort. He might encourage Harry to embrace his werewolf side as a source of strength. This could lead to a more complex and strategic relationship, where Dumbledore sees Harry as an even more powerful weapon against the Dark Lord, but also has to balance the risks associated with Harry's new condition.
In the 'Harry Potter gets bitten by a vampire' fanfiction, there are numerous possibilities. Harry's appearance might change, with paler skin and perhaps sharper features. His magical abilities could be affected in strange ways. For example, his Patronus might change form due to his new vampiric nature. He could also form new alliances with creatures that are more accepting of vampires, like some werewolves who might see him as a kindred spirit in a way. This could create a rift between him and some of his old friends who are more traditional in their views of the wizarding world, but it could also open up new opportunities for him to explore different aspects of magic and the supernatural that were previously hidden from him.
The story would likely progress in a very different direction. Harry would no longer be just a wizard. His new vampire nature would make him an outcast in many ways. He might be hunted by some in the wizarding community who see vampires as a threat. At the same time, he could meet other vampires who have different motives. Some might want to use him for his connection to the wizarding world, while others might want to help him. His journey would be one of self - discovery, trying to balance his two natures and figure out where he belongs in this new and complex situation. He would also have to deal with the fact that his lifespan might be greatly extended, which would change his perspective on life and his future plans.
Dumbledore would be very concerned about Harry's future. He would try to guide Harry in controlling his new abilities. Their relationship might shift to a more teacher - student dynamic focused on this specific issue. Dumbledore could also use Harry's situation to teach the wizarding community a lesson about acceptance. He might encourage Harry to be open about his condition and show that being bitten doesn't make him any less of a hero. This would be a big change from their previous relationship which was more about the overall fight against Voldemort.
A possible plot twist is that when Harry is bitten, he starts to have visions of the vampire's past. This leads him to discover a long - forgotten prophecy about a vampire - wizard hybrid saving the wizarding world. Also, his friends initially think he's turned evil due to the vampire bite, but in reality, he's just trying to figure out how to use his new state to fight the real threats in the wizarding world. It could also be that the bite makes Harry age backwards, which causes all sorts of chaos in the wizarding world as people don't recognize him and he has to re - establish his identity.
His friends might be in awe of him at first. Since Harry would be learning from Merlin, he'd likely gain new and extraordinary abilities that his friends would find both amazing and a bit intimidating.
In some fanfictions, their relationships become even stronger. They have been through so much together during the war that they are like family. For example, Harry, Ron and Hermione might see each other more often and support each other in their new careers.