To GMPC or to Allied NPC?

Does the word GMPC even mean anything anymore? Let’s find out. Tally Tally is one of my favorite characters ever. He also happens to be an NPC. He was a hobgoblin from a space prison ship my group ran into during session one of a new campaign. They found a crashed part of a prison spaceship on their fantasy planet and a bunch of alien prisoners had escaped. These aliens were about to start causing havoc in an attempt to create a way to get back up to the rest of the prison ship where they had started a prison break. Tally was a mercenary before being incarcerated. He wasn’t interested in