It's hard to say without reading it, but it could be Harry, Hermione, and Ron. They are the central characters in the original series, so they might be the focus in this fanfic too.
It could be about a variety of things. Maybe it's about characters in the Harry Potter world awakening to new powers, new understandings, or new relationships. It might focus on a particular character's awakening journey, like Harry himself realizing something crucial about his magic or his destiny.
In the 'awakenings real story', Dr. Oliver Sacks is the central figure. He was the one with the inquisitive mind and the determination to find a solution for these patients who had been in a vegetative - like state for years. The patients are also key characters. Each patient had their own story, their own experiences before the 'awakening' and then during the time when they were awakened by L - dopa. Their families, although not as prominently featured, were also part of the story as they had been living with the hope and then the reality of the patients' conditions.
In the 'awakenings true story', the central figure is the doctor. He's the one who takes on the challenge of trying to awaken the catatonic patients. The patients are also main characters. They come from different backgrounds and have different experiences before falling into the catatonic state. Their families also play important roles as they are deeply affected by the situation of their loved ones, whether it's the hope when the patients are awakened or the despair when the effects wear off.
The fanfic might be unique because it can explore uncharted territories in the Harry Potter world. Maybe it delves into the history of a certain magical artifact that Arabella discovers. Or it could be about her forging new friendships with characters who were only minor in the original series. This gives a fresh take on the well - known wizarding world and makes it stand out from the official Harry Potter story.
The main characters are likely the patients who are in a state of being 'awakened' and the doctors or medical staff who are trying to help them. But without more specific knowledge of this particular 'awakenings', it's hard to name them exactly.
I'm not entirely sure without more context, but if it's based on Oliver Sacks' work, the main characters would likely be the patients he treated. These patients had been in a sort of catatonic state for a long time and then had a period of 'awakening' due to experimental treatments.
Since it's a fanfic, the main characters could be a mix of new and existing characters from the Harry Potter world. Maybe it has Harry, Ron, and Hermione in some sort of mentoring role to the new hunters. Or it could be entirely new characters who are on a journey of their own, exploring parts of the wizarding world that haven't been fully explored in the original series, like some hidden areas where they need to hunt for something important.
Most likely, the main character is the healer. They could be an original character created for the fanfic. There might also be appearances from well - known Harry Potter characters like Harry himself, Hermione, and Ron. Maybe the healer has to work with them to solve some sort of magical health crisis in Hogwarts or the wizarding world at large.
In addition to Harry, there could be a unique snake character that is a main character. This snake could have its own personality and motives. It might be a magical snake that has been around for a long time and has knowledge of hidden secrets in the wizarding world. Dumbledore could also be a main character as he often guides Harry in the original series and would likely do so in this fanfic as well, especially with Harry's new snake - related situation.
Well, Harry Potter himself is likely to be one of the main characters. He might be involved in the rebuilding of the wizarding world or dealing with the after - effects of the war. Hermione Granger would probably also be a main character, using her intelligence to help solve new problems that arise.