I don't know as there's not enough information given. It could be a story with a single main character who is the one doing the staring or the one being stared at.
Given the lack of details about 'the stare train story', the main characters could be various. Maybe it's a story about a traveler on the train who encounters a strange fellow passenger and their interactions are centered around their stares. Or it could be a story about the train conductor and a passenger, and the stare between them is a key part of the plot.
It's possible that the main character is a journalist. He or she hears about the rumors of the stare in a particular place and decides to go there to get a story. Along the way, they meet some locals who have also been affected by the stare in different ways, and together they try to uncover the mystery behind it.
There could be multiple main characters. Maybe there's a young journalist who is investigating a series of disappearances in a small town. While doing so, they start to notice a strange stare following them everywhere. Then there could be an old hermit in the town who seems to know more about this stare than he lets on. And finally, there could be the entity behind the stare, which might not be fully revealed until the end of the story, creating a sense of mystery and horror as the journalist and the hermit try to figure out how to stop it.
I don't know since I haven't read it. It could be the person giving the stare, the person receiving it, or other passengers who are witnesses.
As I don't know the particular 'the stare' story, it could be a young girl as the main character who is haunted by the stare.
Since I don't know the details of 'the stare train story', it could cover a wide range of things. It could be a fictional story where the train is haunted and the stare is from a ghostly figure on the train. Or it could be a story about a person's psychological state, and their intense stare on the train is a sign of their inner turmoil or some secret they are hiding. It could also be a love story where two people exchange meaningful stares on a train journey.
Since I don't know the exact story, it's difficult to say who the characters are. But it could be an ordinary person, like a man or a woman who is in a tough situation related to the fridge.
Since the 'train story' isn't described, the main characters could be a detective who is on the train to solve a case. Or it could be a family traveling together. There might also be a hobo who lives on the train.
In the 'free train story', the main characters might include a family that is given the opportunity of a free train journey. There could also be a railway official who decides to make the train free for some reason. And perhaps there is a stowaway who sneaks onto the free train and becomes part of the story.
The two main characters are the boy and the train. The boy could be a curious young lad with his own hopes and fears. He is the one who engages with the train. The train, on the other hand, can be seen as a powerful and mysterious entity. It could hold the key to the boy's adventure. Maybe the train has a name or some special markings that make it distinct in the story. And the boy's relationship with the train could be one of excitement, or it could be a more complex relationship like he is both afraid and fascinated by it.
Since I don't know the exact story, the main character is surely the girl on the train. There might be other characters like the train conductor, or maybe some fellow passengers who play important roles in her story.