What are the most interesting plot twists in 'The Battle of Hogwarts' fanfiction?

In some fanfics, a character travels back in time to stop a dark wizard from getting a powerful artifact, only to find out they were the one who accidentally led the dark wizard to it in the first place. It's a great plot twist that adds a lot of depth to the story.

One possible plot twist could be that the activation of Hogwarts Amor (presumably some sort of magic related to love at Hogwarts) has unexpected consequences on the relationships between the characters. For example, it might make enemies suddenly fall in love, which would completely change the dynamics between the houses at Hogwarts. This could lead to strange alliances and rivalries within the school.

In 'Harry Potter and the Hogwarts Four Fanfiction', it could be that the four are actually part of an ancient prophecy that no one has fully understood yet. They might start to have strange visions or abilities that lead them to uncover the true meaning of the prophecy. This would not only change their understanding of their own roles at Hogwarts but also have a huge impact on the future of the wizarding world. They would have to figure out how to fulfill this prophecy while also dealing with the normal challenges of school life, like exams and rivalries between houses.

Perhaps a key plot point is how the castle itself reacts during the battle. In the fanfiction, it might show Hogwarts as a sentient entity, protecting its inhabitants in unique ways as it witnesses the final showdown. This could include magical barriers or even the portraits getting involved in some way.

One interesting plot twist could be that a minor character from Hogwarts, like Neville, discovers a hidden power within the Deathly Hallows that was previously unknown. Maybe he realizes that the Elder Wand has the ability to not only transfer power through combat but also through acts of self - sacrifice, which completely changes the way everyone views the power of the Hallows.

Perhaps a plot twist where the main villain in the Altita Battle Angle crossover fanfiction is actually a character who was thought to be good. This character has been secretly manipulating events in both worlds for their own gain. They might have been the cause of the crossover in the first place, in order to access resources or powers from the other world. It's a shock to the other characters and completely turns the story on its head.

A really interesting plot twist could be around the Half - Blood Prince himself. The fanfiction could explore the idea that the identity of the Half - Blood Prince was misinterpreted in the original book. Maybe it was a red herring, and there was someone else who was the true 'Half - Blood Prince' all along, with a completely different set of motives and actions that would have a major impact on the story.

A really interesting plot twist can be when the characters from Undertale end up in the Naruto world and they have to adapt to the ninja way. For example, Sans using his shortcuts in the middle of a ninja battle, which throws everyone off guard. It's unexpected and adds a whole new level of humor and chaos to the story.

In some fanfictions, a big plot twist is when Naruto suddenly gains a Devil Fruit ability, completely changing the power dynamics. For example, in 'Naruto's Devil Fruit Adventure', he gets a powerful fruit that makes his ninja skills even more formidable.

One really cool plot twist is when the values of the Naruto universe start to influence the Decepticons in unexpected ways. For example, the concept of friendship and loyalty that Naruto and his friends uphold might start to make some Decepticons question their own motives and allegiances, which leads to a whole new set of conflicts and resolutions in the fanfiction story. This not only adds depth to the story but also makes for a very engaging read as it challenges the typical Decepticon - like behavior we are used to in the original Transformers franchise.