It Started With a Kidnapped Pig...
Lolth , the Demon Queen of Spiders, is the chief goddess of drow elves. She is also known as the Spider Queen and the Queen of the Demonweb Pits. She is associated with spiders, evil, darkness, chaos, assassins, and drow.
There are many stories among the elves of Lolth’s fall from grace as a goddess of the elf pantheon and her rise back to godhood as a goddess of evil. She has been said to appear as a beautiful elf or drow, as a drider, or as a drow head on a giant spider body.
Lolth has had numerous plans for domination of Faerun foiled or thwarted by other deities or high level adventurers. However there is evidence that she is attempting to dominate several worlds and has succeeded on some.