Such is the Heart of Madness
Sareth Kzekarit (Dead)
Tall, red-eyed drow. Taciturn.
Sareth is a drow commoner who, after eking his was through Melee Magthere, served as a scout for the city of Menzoberranzan. Until his extracurricular activities landed him in slavery in Velkenvelve. He is urging the party to go to Neverlight Grove as he doubts that they will gain entry to Blingdenstone without a svirfneblin escort.
After his head split open, the only things he said seem to point to reverence for Zuggtmoy, Lady of Decay, one of the Demon Lords.