Snape could be a key witness if the story allows for it. Since Snape had a double - agent role, he could provide insights into Draco's situation. He might be able to testify that Draco was being used by Voldemort and didn't have much of a choice in some of his actions. This would add a layer of mystery and intrigue to the trial.
Harry Potter could be a witness. He has a complex relationship with Draco. He might be called upon to testify about Draco's actions during the war. Harry could either condemn Draco or, in a moment of growth and understanding, speak in his favor, highlighting how Draco was also a victim of Voldemort's tyranny.
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.
In this fanfiction, a key witness might be Bellatrix Lestrange. If she were alive, she could be made to testify about the Malfoys' involvement with Voldemort. She was very close to the Dark Lord and knew a lot about the inner workings of the Death Eaters. Also, members of the Order of the Phoenix, like Remus Lupin or Kingsley Shacklebolt, could be witnesses. They were constantly fighting against the Death Eaters and would have knowledge of the Malfoys' actions. Additionally, some of the house - elves who served the Malfoys could be witnesses, as they would know a great deal about what went on in the Malfoy Manor.
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, obviously Harry Potter would be a key witness. He was at the center of many of Umbridge's plots. Hermione would also be there, presenting evidence of academic suppression. But don't forget about Ginny Weasley. She was part of Dumbledore's Army and could testify about how Umbridge tried to break up the group. And then there are the Hogwarts professors. McGonagall, for instance, could give her account of how Umbridge disrupted the normal running of the school and undermined the authority of the real Hogwarts staff.
I really like 'Draco's Trial: A New Beginning'. This fanfiction delves deep into the politics and prejudices within the wizarding world during Draco's trial. It not only focuses on Draco but also on how other characters react. For example, Hermione is there as a legal advocate, and their interactions add a whole new layer to the story.
One common theme is redemption. Draco is often shown as trying to atone for his past actions during the trial. Another theme is the power of friendship. Sometimes his old Slytherin friends or even unexpected allies from other houses come to his support.
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.
It could be his father. Lucius Malfoy's actions and his ties to the Dark Lord might put Draco in a difficult position. Draco might disappear to escape the consequences of his father's actions or to avoid being used further in the Dark Lord's plans.
It could be some of the more radical pure - blood supremacists. They might see Draco as a symbol of the old pure - blood families that are starting to lose their influence. By kidnapping him, they hope to send a message to the Malfoy family and other pure - bloods that they need to be more aggressive in maintaining their status.
Luna Lovegood could be an interesting pairing. She's a Ravenclaw with a very unique view of the world. Her dreamy nature could contrast with Draco's more cynical side, and perhaps she could help him see the magic in the world in a different way.