Netheram

Netheram is an enigmatic beholder variant inhabiting the Valefor Deathworks.  Before he became a forge master. he cruised the depths of the Green Nebulous.  As an eye of the deep, he had no interest in the land except for the potential prey that came too close to the water's edge.

Eye of the Deep

One day, he was captured by the apex predators of the Green Nebulous.  The aboleth that captured Netheram decided not to kill him but to punish him for not bending a knee (or flipper, pincer, fin) to them, so they put him in a specially designed tank and sold him off to illithid merchants.  He was then carried north for ten leagues in a glass-steel tank of water.  Drow merchants then purchased him and took him to Valefor where Underdark oddities were highly sought after.

Netheram ended up in a glass covered pool.  This pool was glass covered because above it was the palace chamber for meeting important dignitaries.   This pool awed many who came before whatever hobgoblin satrap held sway over Valefor.  It also led to embarrassing situations when Netheram, in a fit of rage, would spring from the pools murky depths and clatter his pincers on the glass.

Netheram became a forge master by necessity.  He was saved from death after Valefor fell, operated on by duergar dissector/necromancer, implanted with a Tiwa'erra Void Sphere, turned into a death tyrant, modified to have a forge hammer and tongs instead of pincers, and left to figure out what to do with these implements.  Probably, the worst of Netheram's suffering was that he now functioned better hovering about the ground, rather than cruising underwater.  This last condition was said to be a directive from none other than the master of pain and suffering - the god Torog.