Some powerful dark wizards might also be his rivals. They could see the competition as a chance to get their hands on something valuable in Gringotts, like a dark magic artifact, and would stop at nothing to win, including getting rid of Harry.
Maybe Harry has to compete in some magical challenges set by Gringotts to retrieve a powerful magical item. For example, he might face enchanted vault guardians.
Perhaps there's a dark - horse candidate, a relatively unknown trainer who has been quietly training and is now ready to take on Ash in the Champion League. This trainer could have some unorthodox training methods that make their Pokémon very difficult to defeat. And then there are always the regular tough competitors that Ash has faced in previous leagues, some of whom might also be in the Champion League in this fanfiction.
In this fanfic, Harry might encounter new magical creatures in Gringotts. Maybe he discovers a secret vault that was thought to be lost.
In a Harry Potter Dueling Champion fanfic, Draco Malfoy could be a potential rival. He has a strong sense of pride and is always eager to prove himself. His family's pure - blood heritage gives him access to some powerful magic and knowledge. Another could be Hermione Granger. She is extremely intelligent and has a vast knowledge of spells. Her thirst for knowledge and competitiveness would make her a formidable opponent in a dueling championship. And then there's Viktor Krum. He is already a well - known and skilled wizard from Durmstrang, with his own unique style of magic that could pose a serious challenge.
Perhaps Harry discovers a long - lost magical item in one of the vaults during his apprenticeship. This item could be of great importance to the wizarding world, and he has to decide whether to keep it a secret or reveal it to the authorities. Along the way, he has to deal with the greed and envy of some of the other employees at Gringotts.
One possible motive could be to stop Voldemort from getting his hands on some crucial dark magic item stored in Gringotts. Harry might think that by destroying it, he can prevent Voldemort from getting more power.
One possible implication could be that Harry has access to unlimited wealth and resources. This would change his status significantly within the wizarding world. He could use the gold to fund various projects, like improving Hogwarts or helping out the less fortunate wizarding families.
Another possible rival could be a new character, perhaps a transfer student from a different wizarding school. This student could have unique magical abilities that Harry has never encountered before. They might be very confident and arrogant, seeing Harry as the main obstacle to their victory in the competition.
It could be a young goblin who has just started working at Gringotts. He's full of enthusiasm but also a bit naive. Through his eyes, we can see the inner workings of the bank, the different vaults, and the various magical items stored there. Another option could be an older wizard who has a long - standing debt with Gringotts and is trying to find a way to pay it off without sacrificing his most precious magical possessions. Or perhaps a young witch who is an expert in ancient runes and is called in by Gringotts to help decipher some mysterious inscriptions found in one of the oldest vaults.
Obviously, Harry and Bill are the main characters. Harry, the boy - who - lived, has had many adventures already. Bill, as an older and more experienced wizard, brings his own skills and knowledge to the story. They are the ones who are at the center of the action in this fanfic as they visit Gringotts.