Themberchaud, a red dragon, resides in Gracklstugh, a city in the Underdark of the Forgotten Realms campaign setting. For those unfamiliar with fantasy terms, the Forgotten Realms is a popular campaign world for the Dungeons & Dragons RPG, and the Underdark is a vast underground cave system teeming with various monsters and subterranean species, including the well-known drow or dark elves. The duergar, also known as gray dwarves, are similar to the drow but among the dwarven race. They are cold, somber, and devoted to their work, possessing exceptional craftsmanship like their more cheerful counterparts, the traditional fantasy dwarves. Themberchaud,