Tinkers' Union is a goblin organization led by Director Riddlevox. Their headquarters is in the Undermine, but they also have workshops in  Gadgetzan.
They have a saying: "out of the heat-applied metallic cooking container and into the oxydizing, energetic mixture of reacting gases and solids!"
In the RPG
At war with the
gnomes and dwarves, the Tinkers' Union deals with technology and the construction of gizmos, weapons and mechanical monstrosities. Director Tek'zik Riddlevox, overseer of the Undermine Tinkers' Union, runs the union.
Samuel Wrenchwright was a popular member of the "Tinker's Guild" in Ratchet.
This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.
It is assumed that the Tinkers' Union is a
trade union of goblin tinkers (also known as engineers). It is assumed that the Tinkers' Union headquarters is a major portion of the Undermine.