SVIRFNEBLIN

Deep gnomes, called Svirfneblin (pronounced: svirf-NEB-lin) in their own language, were a gnome subrace that lived in the UNDERDARK. While their surface cousins were known for their boundless optimism and cheerful mischief, the Svirfneblin were serious and suspicious creatures. They survived in the UNDERDARK by maintaining wariness of others and working hard to keep their underground society secret.
Deep gnomes were wiry and lean with a body as hard as a slab of rock. Males were completely bald and beardless, while the females sported hair. Ranging from 3' to 3'6" (90–107 cm) in height and weighing between 40 and 45 lb (18–20 kg), the deep gnomes were small enough to give them a size advantage when battling larger opponents. Deep gnome complexions were sometimes described as "gnarled" and, like DROW and DUEREGAR, were commonly dark in hue, with most deep gnomes demonstrating brown or gray skin with dark gray eyes. Females typically had gray hair. Deep gnomes did not live quite as long as their kin, with a life expectancy just under two centuries. Due to this and a number of cultural affectations, deep gnome children were considered adults at roughly twenty years of age.