Lolth

Lolth is a demon lord and a goddess worshipped by the drow (some myths propose that she was originally a goddess who was transformed into a demon). She displays formidable power and great cruelty, with an affection for arachnids. Lolth has, through deceit and domination, garnered the ears of the dark elves and eventually established herself as their foremost deity, keeping them under her thumb by creating a society in which only the strong survive and her priestesses are strongest.