TheWoWDBHumanoid
Defiled Engineer
Cult of the Damned
Details
This roster comes from the current game client's data files, so it is not a complete list of every NPC in the game - older world NPCs that are no longer in the modern client are absent.
Level and Map Tracking
The game data tunes Defiled Engineer for levels 50 to 60, Battle for Azeroth content.