There could be a group of characters who are all facing the 'end of the line' together. They might be a community that has been through a lot, and now they are at a crucial point. It could be a family where each member has their own story related to this idea of the end of the line, like an elderly parent at the end of their life, a child at the end of their innocence, and an adult at the end of their dreams.
Since I don't know the story, I can't say for sure. But it could be an ordinary person, like a worker who is at the end of his career, or a young person at the end of their adolescence.
Without knowing the particular 'end of the line story', it's difficult to name the main characters. But if it's a story about the end of a war, the main characters could be the soldiers on both sides. There might be a heroic soldier who has survived until the end of the war and is now facing the aftermath. There could also be the generals who are responsible for making the final decisions that led to the end of the conflict, and the civilians who are also affected by the end of the war in various ways.
I'm not sure as I haven't read the story. But usually, in a short story, there could be a protagonist who is directly involved with the red line concept. There might also be an antagonist who opposes or challenges whatever the red line represents.
The main characters in the 'life line short story' might be people who are facing some sort of crisis. It could be a doctor and a patient if the story is about a medical emergency where the doctor's actions are the patient's 'life line'. Or it could be a teacher and a student if the story is about how the teacher's guidance is the student's 'life line' in academic or personal growth.
The main characters include Tracer. She's a time - traveling hero with a lot of spunk. Then there's Winston, the intelligent gorilla who is also a key member of Overwatch. Reinhardt, the armored knight, is another main character. His honor and combat skills play an important role in the story.
There's no way to be sure without reading the story, but it could be a student who makes the mistake of getting in the wrong line.
There's no way to know exactly who the main characters are without more details. However, it might be a group of core members in the guild. Maybe there's a protagonist who has been trying to fix the 'warts' (problems) in the guild and their story is reaching an end. Or it could be a group of friends in the guild whose relationships are being tested and are central to this end - of - the - line personal story.
Since I haven't read the story, I can't say for sure. But it could be a lonely old man who has spent the winter alone and now has to face the new season.
I don't know as I haven't read it. It could be a single protagonist facing a difficult situation all alone.
There might be a group of friends who are at the party. As the story is about the end of the party, the main characters could be those friends who experience different emotions and interactions during the closing of the event. For example, two friends who have a falling - out or a couple who realizes their relationship is changing as the party winds down.
Maybe there is a young person as the main character. Young people often face situations where they feel like they are at the end of the road, like when they make mistakes or face big decisions in life. And there could be an older character, like a mentor or a parent - figure, who gives advice.