Duergar are a subrace of dwarves known for their gray skin and stoic demeanor. They typically inhabit the Underdark, a vast network of underground caverns and tunnels. Duergar are skilled miners and craftsmen, often specializing in the creation of magical items and weapons. Unlike their surface-dwelling cousins, duergar have a reputation for being reclusive and secretive. They possess unique abilities, such as the power to turn invisible and grow in size. Their culture is heavily influenced by their harsh environment, leading to a society that values strength, cunning, and survival.