I don't know for sure without reading it, but it could be Naruto himself. He's the protagonist of the original series and often in the thick of things.
I'm not familiar with the exact characters in this graphic novel. However, in a 'last man standing' story, the main character is usually the lone survivor. There could be other characters that appear in flashbacks, like his family or friends who were lost in the event that led to him being the last one. There might also be antagonists, perhaps people or creatures that are trying to kill him.
There may be the last man standing as the central figure. He could be joined by a mentor - like figure early on in the story who gives him some wisdom or skills to help him in his fight for survival. Additionally, there could be an evil overlord - type character who is the cause of much of the chaos in the world of the graphic novel and is the main antagonist for the last man standing.
Since we don't have much information about the 'last man standing eve story', it's difficult to say who the main characters are. But if it's about the last man standing, then he is surely one of the main characters. There might also be other characters who are only mentioned in his memories or who he is thinking about in this last moment.
I'm not sure as there's not much information given. But it could be a group of survivors where each has their own backstory and motives.
Since it's a Naruto fanfic, it might center around a character from Naruto who has to fight through numerous challenges, enemies, and perhaps even face betrayal. In the Naruto world, there are always power struggles, and this 'last man standing' could be the result of a large - scale war between villages or a fight against a powerful evil force. Maybe it focuses on Naruto himself having to endure and be the last one remaining to protect his friends and the village.
The main characters are clearly Mandy and Kyle. Mandy is likely to be a strong - willed character, perhaps with her own unique set of skills and knowledge. Kyle, on the other hand, might bring something different to the table, like being more tech - savvy or having a better sense of direction.
I don't know which 'last man standing novel' you are referring to. There could be multiple novels with that name by different authors.
I don't know who the author of this novel is as the title isn't very specific. There could be many novels with this name, so more information would be needed to determine the author.
Sadly, I don't have the information regarding the author of 'Last Man Standing: A Novel'. However, you can search for it in local bookstores. Sometimes, they have details about the book's origin and the person who wrote it.
The main character is probably a very tough and resourceful person. Since he's the last man standing, he must have some skills that have enabled him to survive in a difficult situation.