These specialized Villagers are pretty much immune to hostile mobs. This means than they can keep a village alive even if all of the standard Villagers are killed off.

Trader Merchants are spawned from the Spawner Block by right-clicking with a spider eye.

These Trader Merchants require gold/silver/copper dust for trades and are in one of 5 categories:

  • Armorer: kevlar armor
  • Bounty Hunter: buys/sells mob drops
  • Blacksmith: tools and weapons
  • Alchemist: fireworks, blaze rods and more
  • Farmer: food products