Brassbolt Mechawrench is a pair of the steam-powered auctioneers (programmed with a superiority chip) with access to AllianceAuction House. The original one can be found in Dalaran's Like ClockworkEngineering Shop, and his copy can be found in Silver Enclave. Original one can be seen by Alliance players only and he previously interacted with Alliance Grand Master engineers only.
Greetings <name>. If you wish to use my services as an engineer, then I regret to inform you: No. Only grand master engineers possess the minimal intelligence to interface with my superior programming. More importantly, why are you still talking to me?