Voldemort himself, of course, is the most prominent in a sense. But in the fanfiction, his relationship with the other Death Eaters could be different. He might be more distrustful or have different expectations of them. And then there's Barty Crouch Jr. He could be a major player in the fanfiction, with his skills in disguise and dark magic. His actions could drive some of the major plotlines in the fanfiction.
It's also possible that some of the Death Eaters themselves could be main characters in a sense. For example, Bellatrix Lestrange could be a central figure if the fanfiction focuses on the power struggle within the Death Eater ranks during Harry's hunt, or if there is some backstory or different take on her relationship with Voldemort and the other Death Eaters.
One interesting plotline could be the backstories of the Death Eaters. Maybe exploring how they were recruited by Voldemort, like Bellatrix's extreme loyalty and what led her to that. Another could be their interactions outside of the main battles in the original series. For example, how they deal with the power struggles among themselves when Voldemort is not around.
One interesting plot could be a group of young wizards and witches forming an underground resistance against the Death Eaters. They might use unique spells and magical artifacts that are not well - known in the original series to outwit the Death Eaters.
A possible motive could be self - preservation. If they believe that Voldemort's downfall is inevitable and that by saving Harry, they can gain some form of leniency from the side that opposes Voldemort. They might think that Harry has enough influence to spare their lives if they help him.
Perhaps there is a prophecy that the Death Eaters misinterpret at first. They think killing Harry is the right thing, but later they discover that saving him is actually crucial for their own survival or for some greater good in the wizarding world. So they decide to go against Voldemort's orders and save Harry. For instance, they find out that Harry has some power that can prevent a much greater evil from emerging, which would also threaten the Death Eaters.
Definitely. Some fanfictions depict Harry Potter's attempts to infiltrate the Death Eater ranks or gather intelligence on them. This creates exciting storylines that revolve around mystery, danger, and the fight between good and evil in the Harry Potter universe, all while keeping the content suitable for a wide range of readers.
Power dynamics is also a major theme. The power that the Death Eaters hold and how Harry, as the hero, either challenges or is influenced by it. There can be a lot of tension in these stories as a result of the different levels of power between the two groups. In some fanfictions, Harry may gain a new understanding of power from the Death Eaters.
Well, one possibility is that Harry would be forced to learn dark magic. The Death Eaters might try to mold him into one of their own, but Harry's strong sense of good might resist. He could secretly plot against them while pretending to go along with their ways.
In such a fanfiction, the whole story of Harry Potter would be drastically changed. Harry might grow up with very different values and beliefs. Instead of being against the Dark Arts, he could be initially inclined towards them. His relationships at Hogwarts would be in turmoil as his friends, who are mostly against the Death Eaters, would view him with suspicion.