NPC's (Non-Playable-Characters) are other people besides yourself.
They can be friends, foes, allies, enemies, ect., they can be anyone.
NPC's are different to Mobs, Mobs are lions while NPC's are people like Brother Dakon, they are unique.
NPC's cannot despawn unless they are killed.
Currently the NPC's at Imperial Lands are:
Drug (redstone) dealer
The pirate camp gang
NOTE THIS ARTICLE IS BEING HEAVILY WORKED ON