I'm not sure specifically who the main characters are in 'the call scary story' without more details. But it could be a young woman who receives the call and then has to deal with the terrifying consequences. Maybe there's also a friend or family member who tries to help her figure out what's going on.
Since we don't have a lot of information about 'the call scary story', the main characters could be various. It could be a group of friends where one of them gets the call and then they all start experiencing spooky things together. Or it could be a single person, like a middle - aged man who is going through some personal issues when the call arrives and throws his already - troubled life into more chaos. As the story progresses, more characters might be introduced to either help or hinder the main character's attempts to deal with the horror brought on by the call.
Since I don't know the exact 'the call real story', I can't say for sure who the main characters are.
There might be a caller and a receiver as main characters. If it's a call to action, the receiver could be a hero - type character. For example, a detective who gets a call about a mysterious case. And the caller could be an informant or a victim. There could also be other characters like the detective's partner who helps him in answering the 'call' and solving the case.
In 'the call scary story', 'the call' could be a mysterious or menacing phone call that sets off the events of the horror. Maybe it's a call from an unknown entity, like a ghost or a deranged killer, which starts to make strange things happen to the protagonist.
One of the main characters is the narrator, who starts to uncover the mystery of Cthulhu. There's also Professor Angell, whose research sets the story in motion.
Not having read 'a sick call short story', I can only guess. There might be a protagonist who is the one in need of care due to being sick. Then, there could be a supporting character like a doctor with his or her own backstory and motives for making the sick call. There may also be family members who play different roles, such as a worried mother or a stoic father, and their interactions with the sick character and the person making the call would form an important part of the story.
The main character would likely be Kali herself. She is a central figure in the story if it's about her call of darkness.
There's no way to tell without reading it. However, it might be a young person calling an older relative for advice. Or it could be two lovers having an important conversation. Another possibility is that it's a detective calling a suspect, which would make the story more of a mystery - type short story.
Perhaps there is a hard - working single parent as one of the main characters in this 'Curtain Call A Christmas Story'. The story could revolve around how they manage to create a memorable Christmas for their family against all odds. And then during the curtain call, all the characters who helped this family come together on stage to show the unity and the Christmas spirit.
I'm not entirely sure about the specific main characters in the 'Margin Call' true story. But in the movie based on such a story, there are likely to be characters like senior bankers who are in charge of making big decisions, and junior traders who are on the front lines of the financial operations.
Since I'm not familiar with this short story, the main characters could be a businessperson making an important call for a deal and the person on the other end who has the power to accept or reject it. Or it could be two friends or lovers whose relationship is explored through the phone call.