Dwarf

Dwarves were raised from the earth in the elder days by a deity of the forge. Called by various names on different worlds—Moradin, Reorx, and others—that god gave dwarves an affinity for stone and metal and for living underground. The god also made them resilient like the mountains, with a life span of about 350 years. Squat and often bearded, the original dwarves carved cities and strongholds into mountainsides and under the earth. Their oldest legends tell of conflicts with the monsters of mountaintops and the Underdark, whether those monsters were towering giants or subterranean horrors. Inspired by those tales, dwarves of any culture often sing of valorous deeds—especially of the little overcoming the mighty. On some worlds in the multiverse, the first settlements of dwarves were built in hills or mountains, and the families who trace their ancestry to those settlements call themselves hill dwarves or mountain dwarves, respectively. The Greyhawk and Dragonlance settings have such communities.

Duergar are dwarves whose ancestors were transformed by centuries living in the deepest places of the Underdark. That chthonic realm is saturated with strange magical energy, and over generations, early duergar absorbed traces of it. They were further altered when mind flayers and other Aberrations invaded and performed horrific experiments on them. Fueled by Underdark magic, those experiments left early duergar with psionic powers, which have been passed down to their descendants. In time, they liberated themselves from their aberrant tyrants and forged a new life for themselves in the Underdark and beyond. Like other dwarves, duergar typically have a life span of 350 years.