Dark one

The dark ones were a race of humanoids dwelling in the Underdark. They were natural rogues with powers of stealth and shadow. They were divided into two subraces: the short, gnome-like dark creepers and the human-like dark stalkers. However, it was hard to say if they were actually the same race.

Description
Although dark creepers and dark stalkers looked very different, all dark ones wore only black clothing.

Powers
Thrice a day, a dark one could envelop itself in cloak of shadows, concealing it from view even in bright light, aiding its defense. This darkness was magical, so a foe needed the ability to see in magical darkness to penetrate it.

A dark one could utilize all its acute senses—hearing and smell as well as sight—to discern its surroundings and locate beings. Even in absolute darkness, it had perfect sight out to 60 feet (18.3 meters).

However, when caught in daylight (natural or magical), a dark one was badly demoralized in all ways.

Personality
The dark ones hated light of any kind, and would assault any being who carried a source of illumination, whether a lantern, a torch, or magic. They did not harass those who passed without the aid of an artificial light source.

Combat
Dark ones were craven creatures, but highly skilled in stealth and in ambush. They usually surprised and picked off their foes from the shadows. They were natural backstabbers, most dangerous when making a sneak attack from flanking or surprise. Dark ones fought in total darkness wherever possible, and beat a hasty retreat if they lost the upper hand.

Society
Among the dark ones, the dark stalkers were the leaders. They led dark creepers in ambush and combat.

Dark ones spoke their own tongue. They seemed to comprehend Undercommon, but no one ever heard them utter it.

Relations
The dark ones were an enigmatic people, even to other races in the Underdark. They usually only came into contact with outsiders when they stole some item from others or defended their lairs from their foes.