Nezzaria

Nezzaria (known as Black Spider) is a drow woman who was responsible for several attacks on Phandalin, the people in the surrounding areas, and the Cragmaw Goblins.

History
Nezzaria had made shady arrangements with a number of different people and creatures, including but not limited to: the mayor of Phandalin, the goblins of Doezus' tribe, a pack of Bugbears, and Arno "Glassstaff" Albrek. This was all in an effort to locate and secure the Forge of Spells in Wave Echo Cave.

Once she had finally found the cave, she was set upon by Zero Uchiha and Narcissus. Nezzaria sent her four giant spiders to attack them. Zero was able to defeat the spiders, but Narcissus was killed in the incident. Enraged, Zero confronted Nezzaria and prepared for battle, but she turned invisible and attempted to flee. Zero was able to pierce her leg into the ground with a javelin, effectively crippling her. However, Zero decided to show mercy, asking her name and her motives. She remained secretive, but helped guide Zero to the location of the Forge, claiming the magic it contained would be able to resurrect his wolf. Zero carried her there, even giving her potions to heal her wound, and carrying Narcissus on his back.

Once at the Forge, Zero ordered Nezzaria to do what needed to be done to heal Narcissus. Nezzaria attempted to interact with the Forge, but appeared to be unsuccessful. She made one last effort to turn invisible and flee from Zero, but was taken down once more. Lucien Lachance, believing Black Spider was responsible for the death of his clan, killed Nezzaria here.

Nezzaria's true intentions for the Forge were never made clear.

Several months later, when Zero Uchiha returned to the Forge in order to enhanced the enchantment of the Bracelet of Friends, he discovered Ruma, who identified herself as White Spider, along with another drow priestess, above the skeletal remains of Nezzaria. The priestess poured a sparkling water onto Nezzaria, which resurrected her. Nezzaria, confused and enraged, attempted to get Ruma to attack Zero, but Ruma remained level-headed, and the two departed to an unknown location.

Her last known whereabouts was in a small town Northeast of Phandalin, but it has since been confirmed that she is no longer there.