It could be Neville Longbottom. He has the potential to be a supreme champion. He grew a lot throughout the series, and in fanfiction, he could be given more opportunities to shine and show his true power and skills, becoming the supreme champion.
Another possibility is that it could be Luna Lovegood. She has a very different way of looking at the wizarding world and magic. In this fanfiction, her unique perspective and her own brand of magic could help her become the supreme champion, outperforming others in various challenges and tasks.
Perhaps a new student who transfers to Hogwarts could be the main character. This student might have a unique magical ability that sets them apart from others. They enter the Hogwarts world and quickly rise to become the supreme champion by impressing everyone with their new - found or hidden talents.
The main character could be a young Gringotts trainee who has always been overlooked but has a hidden talent for magic related to the vaults. Maybe they can sense the magical auras of different vaults and their contents, which is a rare ability. This character gets chosen as the champion unexpectedly and has to rise to the challenges that come their way, learning about their own power and the secrets of Gringotts along the way.
It could be a character from a different wizarding school that we haven't heard of before. Maybe a student from a school in a far - off land like the Americas or Asia. They would bring in different magical traditions and skills.
Hermione Granger is another potential main character. Her intelligence and quick thinking would be invaluable in any competition or quest in the fanfiction. She could be the strategist behind the 'champion's champion', guiding them with her vast knowledge of magic and spells.
One possibility could be a group of dark wizards who are jealous of Hogwarts' power and reputation. They want to bring it down and Harry, as the champion, stands in their way. Another could be a former Hogwarts student who turned to the dark side and has a vendetta against the school for some reason. They target Harry specifically because he represents everything good about Hogwarts.
It could be Voldemort again, but in a more powerful and death - centered form. Maybe he has found a way to fully embrace the power of death and become an even greater threat. Since Harry is the champion of death, it would be a battle of two opposing forces related to death.
Well, it could be about a character in the Harry Potter universe becoming the supreme champion in some sort of competition. Maybe it's a new take on the Triwizard Tournament, with a character rising above all others in a really epic way.
Obviously, Harry Potter is likely to be one of the main characters. He is the central figure in most Harry Potter - related stories.
Often, there are antagonists as well. It could be a dark wizard who is trying to disrupt the champion's tasks for his own evil purposes. This antagonist might have a grudge against Hogwarts or the wizarding community in general. He could be using dark magic to create obstacles for the champions, making their journey full of danger and excitement.
It might also be a character who was overlooked because of their appearance or social status. They could be a Hufflepuff student, for instance, who is often underestimated but has a great deal of hidden potential. This student could have a special connection to an ancient magic that makes them a worthy fourth champion.
The supreme Mugwump himself could be a main character. He might have his own backstory, motives, and goals that drive the story forward.