It could be a younger sibling of one of the main characters in the original series. For example, Ginny's little sister who has big shoes to fill but also a great passion for Quidditch.
A Muggle - born student who has to learn everything about Quidditch from scratch. They might face some discrimination from pure - blood players at first but then prove themselves to be an amazing player. Their journey of learning and acceptance could be a great story. This character could bring a fresh perspective to the magical sport as they see it with new eyes.
A character who was previously a benchwarmer on the Gryffindor Quidditch team. After a series of events, they get the chance to be the star player. Their insecurities, their training process, and how they deal with the pressure of suddenly being in the spotlight would make for a very engaging fanfiction.
One potential Quidditch superstar in fanfiction could be a new transfer student. This student could have been a star player in their previous school's Quidditch team and brings a whole new set of skills and strategies to Hogwarts. Maybe they have a unique flying style that no one at Hogwarts has seen before.
In Harry Potter fanfiction, a character can be a Quidditch superstar due to extraordinary flying skills. They can perform complex maneuvers with ease, like the Wronski Feint in a more spectacular way than anyone else. Their speed on the broom is also a factor, being able to outpace opponents effortlessly.
It could be a new player on the team who is jealous of Harry's skills and popularity. This new player might spread lies about Harry, turning the other team members against him. So the new player would be the main antagonist in this scenario.
He might meet other Hogwarts students who he doesn't know very well. They could become good friends through their shared love of Quidditch.
Ron and Hermione could still be important characters. Ron might be super excited for Harry and offer some support and advice. Hermione could be the one making sure Harry doesn't neglect his studies while being on the team.
Draco Malfoy is also popular. He was a rival on the Quidditch pitch in the original books. Fanfictions might explore his character more deeply in the context of Quidditch, perhaps showing a side of him that is more dedicated to the sport than just being a bully to Harry and his friends.
Well, he might meet new friends who are also passionate about Quidditch. They could form a great team together and practice new strategies.
Perhaps in the fanfiction, the Quidditch team gets influenced by a dark wizard who has a grudge against Harry. The wizard uses a spell to make the team members believe Harry is a threat to them. So they start to betray him by not passing the Quaffle to him during the game, or even colliding with him on purpose during a fly - around. This would lead to Harry feeling extremely isolated and confused as he thought his team was like family.
Well, it could be about Harry using his knowledge of Quidditch to manage the farm. Maybe he trains magical creatures for Quidditch matches on the farm.
The fanfiction could develop Harry's leadership side further. He has to lead the workers on the Quidditch farm, so he would become more confident in giving orders and making decisions related to the farm's operations. Also, his love for Quidditch would be expressed in a new way, not just as a player but as someone responsible for all aspects of the Quidditch - related activities on the farm.