Thief Catcher

Thief Catchers are three named elite Alliance guards of the Ironforge Guard. They patrol Ironforge and can detect stealthed enemies, upon discovering one they will attack it, alerting the city to its presence. Their patrol is on a set route that takes them throughout a majority of the city.

If a player zooms in on one of these NPC's as they pass, a pair of Catseye Ultra Goggles is clearly visible being worn on their heads — most likely to aid in their stealth detection capabilities.