Perhaps it includes some new characters that we haven't seen much in the original series but are related to the Hogwart Express. They could be the conductors, other students from different houses, or even some magical creatures that live on or near the train. There might also be some cameo appearances from the professors who are waiting for the students at Hogwarts.
Well, the Hogwart Express Visual Novel probably focuses on the journey to Hogwarts. It may tell stories of new students experiencing the magic of the train for the first time, while also showing the experiences of older students. There could be mystery elements too, like strange noises in the train or a hidden compartment that the characters discover. It might also explore the relationship between the train and Hogwarts itself, how it serves as a connection between the outside world and the magical school.
The main character is a young boy. And of course, there's Santa Claus. The conductor of the Polar Express is also an important character.
Colonel Arbuthnot is also among the main characters. He is a military man, and his relationship with some of the other passengers and his actions during the investigation play an important role in uncovering the truth about the murder on the Orient Express.
Hercule Poirot is a main character. He is a famous detective with brilliant deductive skills.
The main character is Hercule Poirot, the brilliant detective. And there are the various passengers on the Orient Express, like Ratchett, who is the murder victim.
I don't know the specific main characters as I haven't read it. But usually, in such novels, there would be a detective - type character to solve any mysteries, a wealthy passenger who might be involved in some sort of trouble, and a train conductor who has knowledge about the train and its passengers.
Since I don't have specific information about this '999 visual novel', I can't tell you exactly who the main characters are. But usually in a visual novel, there are protagonists who drive the story forward, and there might be supporting characters like friends, family members, or antagonists who create conflict.
I don't have enough information to determine who the main characters in '707 visual novel' are. It could have a diverse cast of characters such as a brave hero, a cunning villain, and some interesting side characters.
Since we don't know the details of '86 visual novel', we can't say for sure who the main characters are. They could be ordinary people living in a fictional world, or they could be heroes with special abilities. It all depends on the nature of the story which we don't know yet.
I have no specific information about the 'a3 visual novel' characters. However, in many visual novels, there are often diverse characters. There could be a young hero or heroine as the main character. Maybe there are some mysterious figures that are part of the 'a3' concept. They could be people with special abilities or knowledge that the main character has to interact with, either as allies or antagonists.