So after looking over some character pages, I saw that some people were considered main characters, while others weren't and I'm confused as to what you need to do to be considered one. When I thought about it, I always considered characters who had speaking roles in 15 or more issues of the overall series. Clearly some characters would be exceptions, but 15 should be the definate. I feel like e should have a more organized method of deciding who is a main character.
Main charcters have more appearences and onscreen time than other characters or they have a big role like the leader or doctor like Sherry she became the leader of the saviors and a main charcter she is also the primary antagonist in valume 28