Imagine two people are on their way to slay a dragon, but they get into an argument and are going to go their separate ways. Can the main protagonist of the story be the mediator who helps restore their relationship, or the smith who makes their swords? Imagine a surgeon is working thirty hours straight and his hands are starting to shake. Can the person who calms him down, protects him while he gets a nap, makes him coffee, and keeps people from bothering him so he can perform his life saving task be the main character? Imagine Superman is fending to save the city, but he can't do it without Batman. Can the main character be Lane, even if all she does is get Batman, even if she doesn't pull the trigger or save Superman herself? Can the person who loads the gun be the main character, rather than the one who pulls the trigger?