I'm not sure specifically as it depends on the author of the fanfic. But it could include the classic Harry Potter characters like Harry, Hermione, and Ron. They might be on the train for some special reason related to their fight against Voldemort or some other new threat.
It's also possible that some minor characters from the original series are given more prominence in this fanfic. Characters like Neville or Luna could have a bigger role when it comes to the events that happen on the train. They could be involved in some sort of mystery or adventure that unfolds during the train's relentless journey.
Perhaps the fanfic introduces some new characters who are specifically related to the train. For example, a train conductor with a mysterious past or a stowaway who has important information. These new characters could interact with the main trio and add more depth to the story.
Well, one interesting aspect could be the unique take on the Hogwarts Express. Maybe it's given some extraordinary abilities or a different role in the fanfic's plot. For example, it could be a magical portal to other dimensions rather than just a means of transportation to school.
There could also be new characters introduced in the fanfic. Maybe a new mentor figure who guides Harry in his training. This character could have unique magical abilities and knowledge that they pass on to Harry. Another possibility is an antagonist who tries to disrupt Harry's training for some reason, adding conflict to the story.
Harry is the central figure, but there might be some new characters introduced in the fanfic. For example, an old wizard who lives on the outskirts of Hogwarts and has some unique knowledge about magic that Harry discovers. This character could become a sort of mentor, even if from a distance, as Harry trains himself using the knowledge he imparts. Also, there could be antagonists like some students who are jealous of Harry's self - improvement and try to disrupt his training.
Of course, there are often original characters in Harry Potter trains fanfiction. These could be new students who have their own secrets or powers. They might interact with the well - known characters, and sometimes they can even be the key to solving a mystery on the train, like uncovering a plot against Hogwarts that starts on the Hogwarts Express.
Obviously, Harry Potter himself is a main character. Since it's about him being alone on the train, he is the central focus. But sometimes, other characters like Dumbledore might make an appearance in his thoughts or as a sort of guiding force. For example, Harry could be reminiscing about Dumbledore's advice while on the train.
Obviously, the main characters are Kurenai and Sakura. Kurenai is the trainer and Sakura is the one being trained.
Obviously, Lucy is one of the main characters. And the dragons would also be main characters as she is training with them.
The main characters are Cooler and his mother. Cooler is likely the protagonist with an interest in trains, and his mother plays an important role, perhaps as a guide, supporter, or co - adventurer.
I don't know for sure as I haven't read this particular fanfic. But it could have the main character be an original creation with the 'lionheart' trait, or it might center around a well - known Harry Potter character like Harry himself with some new 'lionheart' - inspired story arc.
Well, in many Harry Potter fanfics, even those named 'the change', the main characters often include Harry, Hermione, and Ron. However, depending on what the 'change' is about, new characters could be introduced or existing minor characters could be promoted to main character status. For example, if the change is about the Slytherin house becoming more inclusive, we might see Draco Malfoy taking on a more central role in the story, along with the usual trio.