One major plot twist could be that the Dark Lord has a hidden agenda that no one expected. Maybe he is using a false identity to deceive the wizarding world while secretly planning something even more devious.
Obviously, Harry Potter would be one of the main characters. Since it's related to the Dark Lord, he would also be a central figure. And probably Hermione and Ron would be main characters too as they are Harry's closest friends.
Well, one possible main plot twist could be that Harry's friends turn against him when he starts showing signs of becoming the new Dark Lord. They might initially try to reason with him, but as his power grows, they feel threatened and decide to oppose him.
Yes, there is one where Dark Energon turns Hogwarts into a dark fortress. All the teachers and students are affected by its dark energy. But then it is revealed that it was all a test by Dumbledore to see how the students would react to extreme danger. It was a really unexpected plot twist.
One possibility is that James could play a significant role in Harry's growth as a wizard. He might teach Harry advanced magic that Dumbledore or other professors didn't cover. For example, he could pass on family - specific spells or magical techniques. This would change the whole dynamic of Harry's adventures at Hogwarts. He would also be there to protect Harry more directly from Voldemort and his Death Eaters, which would likely lead to different battles and outcomes compared to the original story.
One possible plot twist could be that Harry, under the influence of the dark side, forms an alliance with Bellatrix against the Order of the Phoenix. Maybe he discovers some dark secrets about his parents that lead him to question his previous beliefs and side with her.
In one fanfic, Harry is an orphan and is believed to be a weapon created by Voldemort. But as the story progresses, it's revealed that he was actually created by a group of powerful wizards as a safeguard against Voldemort. This unexpected turn makes the story really engaging as Harry has to deal with his new identity and the expectations that come with it.
One possible plot twist could be that the succubus is actually an ally sent by someone to test the Lightning Lord. Another could be that the succubus has a hidden power that can nullify the Lightning Lord's magic. Maybe she has a magical amulet that was not known before.
If Harry dies instead of Cedric in fanfic, Hogwarts would be in a state of deep mourning. The entire wizarding world that had placed so much hope in Harry would be in shock. Voldemort would likely face less opposition in the short term as Harry was seen as the main threat to his return. Friends like Ron and Hermione would be devastated, and they might have to take different paths. Ron could become more withdrawn, and Hermione might focus all her energy on finding a way to avenge Harry. The story would also likely shift focus to Cedric, who would now carry the weight of the prophecy or the task of ultimately facing Voldemort, if there was such a concept in this altered universe.
The concept of Harry as a Dark Lord in fanfiction is alluring because it subverts the original story. It allows fans to explore the 'what if' scenarios. What if Harry had given in to the power-hungry side? It gives a chance to rewrite the power structure in the wizarding world.
A really interesting plot twist would be if Harry Potter was somehow transported to Gotham as a child and raised there. He would grow up with a different set of values and skills, and when he discovers his magical abilities later on, he has to balance his newfound magic with the street - smart tactics he learned in Gotham. This would completely change his character and how he approaches the fight against Voldemort. And when Batman eventually meets him, he's not the typical Harry Potter we know from the books. It could lead to a whole new dynamic between them.