Hermione could also be the main character. She is highly intelligent and resourceful. Without Harry as the chosen one, Hermione could use her vast knowledge of magic and her logical thinking to lead the fight against Voldemort. She could be the one to discover the secrets needed to defeat the dark forces.
There's also a possibility that it could be an entirely new character created for the fanfiction. This character could have a unique backstory, perhaps a lost heir to an ancient wizarding family with a special power that was dormant until the right moment, making them the key to saving the wizarding world instead of Harry.
Neville is a likely candidate. He has always been brave and has a strong connection to the Gryffindor values. If not for Harry, Neville could have easily stepped into the role of the main character. His growth throughout the series shows that he has the potential to be a great hero.
Neville could be a likely candidate. He had the courage and the connection to the prophecy as well.
Well, Harry Potter is obviously one of the main characters. Since it's a fanfiction related to him being the 'Chosen of Avalon', he would be central to the story.
How about Neville Longbottom? He could be the main character in a fanfiction set in the Chamber. Neville, who has always been underestimated, could show his true courage and strength. He might discover a hidden ability that helps him face the challenges in the Chamber, perhaps something related to his connection with plants, which could play a crucial role in defeating the Basilisk or whatever new threat is in the Chamber.
Harry Potter himself is obviously still very popular as the main character. His growth and development as the Chosen One are often central to these fanfictions.
A lesser - known character like Ernie Macmillan from Hufflepuff could be the main character. As a prefect, he could bring out the unique qualities of Hufflepuff house. He might have to deal with issues like other houses underestimating Hufflepuff students. His story could focus on how he promotes the values of hard work, loyalty, and fairness within the house and the school as a whole.
Hermione could be a great main character. She's curious and intelligent, so she would be really interested in exploring the secrets of the diary. She could use her vast knowledge of magic to try and figure out how the diary works and what secrets it holds.
Harry Potter himself could be the main character as a revenant. Maybe he has some unresolved issues from his past, like his relationship with his parents. His revenant form could be on a journey to fully understand their sacrifice and his own place in the wizarding world's history.
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.
Hermione could be a great main character in an elementalist fanfiction. Her intelligence and thirst for knowledge would make her eager to learn about and master elemental magic. She could be the one to discover a long - lost elemental spell book and start exploring the powers.
It could be a new student at Hogwarts who has a natural talent for dealing with beasts. This student could be from a family that has always had an affinity for magical creatures but has kept it a secret until now.