Lolth

Lolth is the chaotic evil goddess of darkness and trickery. She is the patron of the drow, and co-creator of the eladrin along with Corellon. She and Corellon were once lovers, but Corellon became interested in Sehanine. In a jealous rage, Lolth corrupted the a large portion of the eladrin and transformed them into the drow.