Chitine

In the Forgotten Realms campaign setting for the Dungeons & Dragons fantasy role-playing game, the chitine is a monstrous humanoid. They were created inadvertently by the Drow as a result of failed experiments on normal humanoids.

Physical Description
A Chitine resembles a sickly, white, four-feet tall humanoid with vaguely spider-like features. They have wavy hair, sly faces, and spider's fangs protrude from their mouths. Chitines have four arms, and these have an additional joint (a normal humanoid, such as a human, has three [shoulder, elbow, wrist], but the Chitine has a fourth), and this allows for greater flex in movement and manipulation.

Environment
Chitines dwell underground.

Society
Chitines mostly serve the spider goddess/demon lord Lolth. Chitines typically hate their former masters, the drow. Chitine clerics of Lolth are rare; instead, there is a closely related but completely separate race for the worship of Lolth in Chitine society; the Choldriths. Chitines strongly live up to their spider heritage; in their underground cities and villages, they build with webs in the same way that humans build with wood and stone. They build everything out of it, homes, traps, clothing, weapons, and more.

A chitine is usually chaotic evil in alignment, though Neutral Good and Chaotic Good ones exist (usually those that have abandoned their subterranean villages for adventuring).