NPCs

Description
NPCs (Non Playable Characters) are humans that the player will find scattered through out the islands of the world. They can be one of the following:
 * Traders that will buy and sell all kinds of goods,
 * Quest givers that will ask the player to slay creatures or craft some items relative to the island level and reward the player with XP, gold and/or items, or
 * Talkers that will give some useful information to the player or simple say what comes to their mind.

Due to how the islands are generated, some NPCs may not spawn. This is an issue that is most common on small worlds and with talkers. But it can also happen to traders and quest givers. On the other hand, large worlds, may spawn several of the same talkers on a single island. Additionally, worlds made before the NPC update will not spawn the NPCs in their proper locations unless the islands themselves were created after said update.

Relocatable NPCS
Some NPC's require a the player to complete a quest before you can move them. The glitched NPCs have been fixed in a recent patch Aj-Kuar El-Auuk, Frank the Farmer, Nina the Farmer are now all movable again

Other
This list is incomplete.