User blog comment:Unrulyruby100/Character category and potential category change/@comment-27202257-20140213055040/@comment-1500935-20140213223403

So basically, it would be useful to have a third category to class characters which are neither major nor minor. I would agree that characters with no unique model can be directly sorted as minor, yet it is not enough. For example, I would not consider Lydia or Cecelia to be as important as Havelock or Pendleton in the course of events leading to the end of the game. Even all targets in the DLC are not directly part of Delilah's plans, as opposed to those in the main game which are all part of the Regent's plans, so can they be called major characters as well? So yes, we should see for a middle category instead of only two.

@MDGeist

Considering that Abigail Ames detains the same informations as Rothwild, I'd believe they're on the same degree of importance to the story. It's also the same for Nurse Trimble and the Geezer, they can both provide the code to the engine room and you can deal with either one or the other. For Bunting, I agree too that he is not important enough to be a major character, but that he is essential enough to the third mission to not be considered as minor either.