The gnome Gerenzo Wrenchwhistle is not easy on the eyes. His flesh looks like it's rotting away, and he's grafted metal and gears onto his body, replacing some of his limbs with mechanical ones. As he was one of the head engineers in Gnomeregan, where he was working on their secret project, he most likely got irradiated.
A while ago, the Venture Company outfit in the Stonetalon Mountains hired Gerenzo Wrenchwhistle. Their other chief engineer, Ziz Fizziks, was so taken back by this, that he pleaded with Sputtervalve to find him new employment with the Tinkers' Union. But a gnome hired by a Goblin company always causes a scandal. The matter of this gnome that has been hired by the Venture Company has caused a bit of a stir in Undermine. The trade princes do not approve of Razdunk's consorting with this Gerenzo.
Soon Gerenzo Wrenchwhistle made the blueprints for the enormous woodcutting machine Super Reaper 6000 for the Venture Company. Northeast of the Windshear Crag, far above Cragpool Lake, up near the water wheel is where Gerenzo now watches over the entire site.