NPC

NPCs are passive mobs that have a mob model similar to villagers can only be spawned using commands. NPCs will show a "Talk" button if you tap and hold on them, however, the button currently opens a page that has nothing in it.

Spawning
NPCs do not spawn naturally, however they have a spawn egg in the creative inventory. The egg does not work if used by hand, although it will if dispensed by a dispenser or used to program monster spawners. It can also be spawned using commands. NPCs have a custom name when spawned:.

Trivia

 * NPCs have villager sounds.
 * NPCs are invulnerable, even if the player that is hitting it is in creative mode. The only way to kill NPCs is using commands, or be dropped it to fall into the void
 * NPC can't move themselfses, so they can only moved using just one command, a piston or sticky piston, minecart with boat or by pushing it with water.