The main character is surely Harry. However, in a fanfic about uniting all, Dumbledore could play a significant role as a mentor figure, guiding Harry in his quest. Neville might also be an important character as he represents the growth and strength of the students at Hogwarts. Additionally, characters from different magical species, like a centaur or a goblin, could be main characters if the fanfic is about uniting the entire wizarding community which includes all these different elements.
It could be a fanfic that focuses on Harry's journey towards a unity concept. Maybe it involves Harry Potter working to bring different groups or elements within the wizarding world together until they become one unified force, perhaps against a common enemy or in the pursuit of a greater good.
Well, of course, the main character is 'him'. But there could also be other important characters like his mentor who guides him on his journey. This mentor could be an old and wise figure who imparts valuable knowledge.
A likely main character could be a young ninja who discovers he has the 'One for All' power. He would be on a journey to understand and control it, while also dealing with the normal challenges of being a ninja in the Naruto world, like training and making friends.
There's a chance that the main characters in 'All our firsts' are characters who are on the outskirts in the original books. Maybe it's the shy kid in the corner of the classroom, or the character who has always been in the background during the big events. This fanfic could bring them to the forefront and make their first experiences the central focus. It could also be characters who are related to the main characters in some way but were never fully explored in the books, like a distant cousin of Harry's who is now having their first adventure in the wizarding world.
I'm not sure exactly as I haven't read the 'till the last breath novel' in detail. But usually, the main character is the one whose story we follow most closely, often the one facing the biggest challenges or on a significant journey.
I'm not sure without reading the novel, but it could be a group of friends who have known each other for a long time.
I'm not sure exactly who the main characters are without reading the novel. But generally, in a novel like this, there could be a hero or heroine who is on a journey, perhaps to save the world or find something important.
I'm not sure as I haven't read the novel. But usually, there would be at least two main characters who are in love with each other, like a man and a woman.
Since I haven't read the novel, I can't tell who the main characters are exactly.
In 'Harry and Teddy fanfic', the two main characters are Harry and Teddy. Harry is the one who has been through so much in the wizarding world. He has a sense of responsibility towards Teddy. Teddy is a character full of possibilities. He's the product of a tragic event (his parents' death), and Harry's presence in his life is like a guiding light. Their personalities, Harry's wisdom and Teddy's eagerness to learn, are often explored in these fanfics, which makes for very engaging stories.