It is true, some did, some didn't and faction was a considered factor. I couldn't tell you what was classic and what wasn't bros
[You must be logged in to view images. Log in or Register.]. I know guards and guild masters followed this rule, whether in the cities or not. The rest was kind of... random. Charming a mob onto someone, regardless of faction, would cause the npcs to assist the charmed npc almost every time.