In the 'Last Stand at Saber River' novel, the main characters could be diverse. There might be a rugged individualist, a person who has a long - standing connection to the land around the Saber River. He could be joined by other settlers or locals who have a stake in the area. There may also be some characters who have a past that comes into play during this last stand situation. For example, a former soldier who uses his military experience to help in the stand. And there could be characters who represent different values or ideologies that clash during this intense situation.
I'm not sure specifically who the main characters are without reading the novel. But usually, in a story about a last stand, there would be a leader - someone who is in charge and making the crucial decisions. There might also be a group of loyal followers who stand with him.
Typically, in a novel like 'Last Stand at Saber River', there could be a protagonist who is the central figure in the story. He might be a local hero or a person with a strong sense of justice. There could also be antagonists, those who oppose the main character or the group making the last stand. And of course, there would be supporting characters like friends, family members or fellow villagers who play important roles in the overall plot.