Zanassu

Zanassu, or the Spider Demon, was a minor demon lord who thought he could have dominion over spiders.

Description
Zanassu appeared as a giant spider fifteen feet (4.6 meters) wide and six feet (1.8 meters) thick.

Abilities
He was immune to poison and his bite was particularly venomous. If a victim failed to resist the venom, death was nearly instantaneous.

Activities
When on the Prime Material plane, Zanassu ruled over the evil creatures of Spider Swamp in Calimshan and kept many of the leaders of Volothamp (a nearby city) in his thrall.

History
Lolth, the Queen of Spiders, schemed to eliminate Zanassu by telling Selvetarm that it would please his patron Eilistraee if he defeated Zanassu and absorb his power. At a time when Zanassu was weakened by fighting against the forces of Shoon V, Selvetarm attacked and was victorious over the demon lord, but absorbing his chaotic evil–tainted power tipped the balance in Selvetarm to the side of evil.