By and large, NPCs, non-playable characters, most of the time they exist to have dialogue with you. Like in Skyrim, maybe you talk to somebody and it starts a quest. They give you a quest! Exactly! Yeah, there's a lot of that. NPCs are actually very important to the quality of the game. Generally speaking, you can't really play the game without them because they precipitate a lot of the actions. They're an essential piece.