NPC stands for Non-Player Character. In the Wastelands game we have several different types of NPCs.
The first type is the scripted object NPC. These are typically simple brained AI objects in SL, usually Critters, Rekekrs, and some Traders. Examples include Turkey Buzzards, Cinder Beetle Larvas, and Juvenile Cinder Beetles.
The second type are bot-scripted NPCs. These use a combination of inworld objects and Avatar accounts to have a more life-like and smarter NPC. Most of the traders fall into this category, as well as some future planned Rekkers.