In certain 'Harry Potter Wizengamot Trial Fanfiction', a great plot twist is when Harry uses an ancient and forgotten form of magic during the trial. This magic could be something that the Wizengamot has no knowledge of, so they are both shocked and unable to counter it. It could also be that Hermione, through her extensive research, uncovers a conspiracy within the Wizengamot itself. This conspiracy could involve some members trying to frame Harry not just for a single crime, but as part of a larger plan to take over the wizarding world.
Well, in some fanfictions, a plot twist could be that a character thought to be on Harry's side in the Wizengamot trial actually has a hidden agenda. Maybe they are being blackmailed by Voldemort's supporters. Also, it could be that the magical creatures of Hogwarts, like the house - elves, come forward with evidence that no one expected, which completely turns the trial around. For example, they might have witnessed something crucial that the wizards overlooked.
In some fanfics, there could be a plot twist where the Wizengamot itself is under the influence of a spell. So, the whole trial is a setup not just for Harry but for a larger scheme to undermine the Ministry of Magic. This would mean that Harry has to not only prove his innocence but also expose the real threat to the wizarding world.
Obviously, Harry Potter himself is one of the most common. Then there's Dumbledore who often plays a role, either as a supporter or as someone with a complex plan. Hermione is also common as she uses her intelligence to help Harry in the trial.
Obviously, Harry Potter is a key character. He is the one on trial, so the whole story revolves around him trying to prove his innocence.
Well, one possibility is that Draco is on trial for his actions during the war. He might be trying to prove that he was acting under duress from Voldemort. The Wizengamot could be divided, with some believing he's truly a Death Eater at heart and others seeing his potential for redemption.
He might face political intrigue. There are likely those in the Wizengamot who oppose him due to his past actions and his association with Dumbledore. Also, he has to deal with the complex and often archaic laws and traditions of the wizarding world which could be a huge obstacle.
Well, one possible plot twist could be a revelation about a character's true heritage that was hidden all along. For example, a minor character might turn out to be related to one of the major wizarding families in ways no one expected.
There are fanfics where the Wizengamot is reformed by Hermione. In these stories, she uses her intelligence and knowledge of the law to make the Wizengamot more just. This often involves her facing a lot of opposition from the old - guard pure - bloods who want to keep things as they are. It makes for a great story as it combines Hermione's character traits with the complex political structure of the wizarding world.
Well, in some fanfictions, Harry might gain control over the Wizengamot through his heroic deeds. For example, if he saves the wizarding world from a great threat again, the public support could be so strong that he can influence the Wizengamot's decisions. He could also use his knowledge of magic, especially some ancient or powerful magic that gives him an edge in the political arena of the wizarding world.
He might use powerful magic or make bold statements to intimidate them.
One interesting plot twist could be that the basilisk has an unexpected alliance. Maybe it teams up with a group of outcast magical creatures to take revenge on those who have wronged them. This would completely change the dynamic as in the original, the basilisk is mainly a tool of Voldemort.