In some darker or more alternative fanfictions, Tom Riddle (before he became Voldemort) might be a main character in Horcrux - related stories. This allows for a deeper exploration of how he first came up with the idea of Horcruxes and the early experiments he might have done. Bellatrix Lestrange could also be involved as she was one of Voldemort's most loyal followers and might have knowledge about Horcruxes.
Harry Potter himself is often a central character. Since he was the one destined to defeat Voldemort and destroy the Horcruxes in the original story, many fanfictions continue his journey with Horcruxes in new and different ways. Hermione Granger also features prominently. Her intelligence would be crucial in understanding the nature of Horcruxes and finding ways to deal with them.
In many fanfictions, Neville Longbottom might also play a significant role. He has grown into a powerful wizard by this point in the story. His knowledge of Hogwarts and its secrets could be crucial in the search for the seventh horcrux. He could be the one who discovers a hidden passage that leads to the location of the horcrux.
Harry Potter himself is often involved. He might be the one to encounter the first signs of inflation, whether it's a magically inflating potion or an enchanted object. His friends, like Ron and Hermione, are also likely to be part of the story, helping him figure out what's going on.
Ron Weasley could also be a key figure. He might be Harry's loyal friend as always, standing by his side during all the changes that Harry is bringing about in the wizarding world as a god. And there could be new characters introduced as well, perhaps other gods or magical beings that interact with Harry in this new fanfiction realm.
In some cases, Albus Dumbledore could play an important role. His wisdom and power in the wizarding world would make him a key figure in any situation where the two different universes collide. He might be the one to first discover Alexstrasza's presence and figure out how to make use of her abilities in the fight against the dark forces in the Harry Potter world.
Obviously, Harry Potter himself is always a main character. He is the one most directly associated with the concept of death in the original series, what with his parents' death and his multiple near - death experiences.
Ron Weasley could be another main character. He might be initially skeptical about the piano's magic but then be amazed when he sees the extraordinary things it can do. Maybe he accidentally discovers a new function of the piano while fooling around with it in the Gryffindor common room.
Harry Potter himself could be one of the main characters in such fanfiction. Maybe he gets an automail limb after a particularly dangerous encounter with Voldemort. Hermione might also be involved, using her vast knowledge to help understand and improve the automail technology within the wizarding context.
Well, of course, Harry Potter himself is often the central figure. He's usually the one who discovers the amulet or is tasked with dealing with its powers or secrets. Hermione Granger also frequently appears, using her vast knowledge to help Harry understand the amulet.
Harry Potter himself is often involved. He might be the one to discover a mysterious egg or be tasked with protecting it. Hermione Granger could also be a main character, using her vast knowledge to figure out the nature of the eggs. Ron Weasley might be there too, providing some comical relief while also helping with the situation.
In some fanfictions, characters like Neville Longbottom could emerge as key figures in emancipation. After his growth and development in the original series, he could use his new - found confidence and skills to fight for the rights of those who are oppressed, whether they are house - elves, werewolves or Muggle - borns.