I'm not sure specifically as I haven't read it. But it could have characters like a plague doctor, a young survivor, and maybe some local villagers.
Since it's about the Black Death, there might be characters representing different aspects of society. There could be a noble who is trying to maintain order in his land while the plague is spreading. There may also be a poor peasant family, showing how the plague affected the lower classes more severely. And of course, there could be some religious figures, as the Church played an important role during that time.
I'm not sure specifically, but they could be people like a plague doctor, a merchant trying to escape the epidemic, or a nun taking care of the sick.
I'm not sure exactly who the main characters are without reading it, but they are probably ordinary people trying to survive the Black Death, like a young boy or girl, or a family member.
A commoner or a peasant could be a main character too. This character would represent the ordinary people who were most affected by the Black Death, showing their struggle to survive, their losses, and how they coped with the horror of the epidemic.
The main character is, of course, Death of the Endless. She is a central figure in the story.
Typically, the main characters would be those from 'The Death Cure' story. This might include Thomas, who is often at the center of the action, fighting against the virus and trying to save his friends. There could also be Newt, Minho, and other important characters who play significant roles in the battle against the Flare and the search for a solution.
Since I don't know the exact details of this graphic novel, Rorschach is likely to be one of the main characters, given the title. There might also be characters who are related to him, like his allies or enemies.
Since it's called 'The Merchant of Death Graphic Novel', the merchant of death is bound to be one of the main characters. There could be customers or clients of this merchant who also play important roles. Maybe there are some sort of enforcers or protectors in the story as well, who either help or hinder the merchant's activities.
There could be a doctor or a nurse as main characters. They would be involved in the care of the dying and might be facing moral and ethical challenges in their profession related to death. For instance, they may have to decide when to stop treatment or how to communicate bad news to the patient's family. Their stories can show the complex relationship between the medical field and death.
I don't know who the main characters are in the 'death of dulgath graphic novel' since I haven't read it.
In the 'Death of Daredevil Graphic Novel', Daredevil is the main focus. However, characters like Stick, who trained Daredevil, could be present. His presence might add some backstory to Daredevil's final moments. Also, the Punisher could potentially be a character in the story. Given his complex relationship with Daredevil, his reaction to Daredevil's death could be an interesting aspect of the plot.