Here are the latest updates on the Kingdom:
Left to right : Me - new NPC servant - new NPC Royal Guard
What you see below them is the interaction box you click to ask them to perform some task like attack or serve things (in this case champagne). Only allowed people will be able to interact with NPC this means if you rent a noble house and hire a Servant only you and your household will be able to ask him to perform task for you.
There will be different kind of NPC: