Another possible candidate could be Tom Riddle before he fully became Voldemort. He was already exploring the darkest corners of magic at a young age. The idea of the Sith and their power might attract him. He could see the Sith as a means to an end in his quest for immortality and ultimate power. As a Sith apprentice, he could combine the knowledge of the Dark Side of the Force with his own wizarding knowledge, creating a truly formidable and terrifying entity.
Harry Potter himself could be a likely candidate. He has shown many qualities that the founders would have admired, like his courage and loyalty. Also, he has a connection to the Sorting Hat which has knowledge of the founders' intentions. Another possibility could be Hermione. Her intelligence and thirst for knowledge are traits that could be associated with the founders. She could use her knowledge to uncover secrets related to the founders and their heirship.
Another possible main character could be a new villain. Since Harry is in a new role as an apprentice, there could be someone who wants to steal the secrets of Ollivander's wand - making. This villain could be a dark wizard or a rogue wizard who has his own motives for wanting to control the wand - making process. Harry would then have to protect Ollivander and the shop from this threat.
In 'harry is an apprentice fanfiction', apart from Harry, there might be other apprentices too. They could be his friends or rivals during his apprenticeship. Also, we can't rule out the appearance of some of the main antagonists from the original series, as they might try to interfere with Harry's apprenticeship journey.
Draco Malfoy could be an interesting candidate. Their long - standing rivalry could transform into a deep understanding and love. They have a lot of history together, which could be explored in a romantic context.
An older and more experienced student, like a seventh - year Ravenclaw who has a special talent for defensive magic. They could have spent their years at Hogwarts studying ancient magic texts related to wards and have a fresh perspective on how to improve the school's protection.
A new character could be introduced as a Sith Lord. Maybe a wizard who has been studying dark and forbidden magic from other dimensions. He could have a red lightsaber - like wand and use powers that combine magic and Sith - like abilities. For example, he could use mind control not just on muggles but also on some weak - willed wizards.
Perhaps Neville Longbottom could take on this role. He has shown great courage throughout the series. His experiences with loss, like the death of his parents, could lead him down a path where he becomes the apprentice of death, using his newfound powers to protect others and bring a new balance to the wizarding world.
One idea could be a young wizard from Hogwarts being secretly recruited by a Sith Lord. Maybe they discover a hidden connection between the Dark Side of the Force and some of the darkest magic in the wizarding world, like the Unforgivable Curses. The wizard, as a Sith apprentice, could then start using Sith powers alongside magic, creating a whole new kind of chaos in both the Star Wars and Harry Potter universes.
Draco Malfoy could be a likely candidate. He already has a sense of superiority and family influence. In fanfiction, he could use his family's wealth and connections in the dark wizarding world to start building a criminal empire. Maybe he gets tired of being in the shadow of Harry Potter and decides to take a more devious path.
Lupin could be a very interesting mentor. He could teach an apprentice about dealing with their own inner demons, as he has his own struggles with being a werewolf. He could also pass on his knowledge of defensive magic and how to use magic in a more practical and street - smart way.