Briarbones is an Avolakia wizard who lives in the Waterdeep sewers beneath Seawind Alley where he studies the phenomenom of the ghostly whispering voices. His lair is guarded by zombies he created. Briarbones was a tutor to the elven warlock Quessahn Uthraebor and she came to him for advice on stopping the First Flensing.
Briarbones usually polymorphs into human form when dealing with the inhabitants of Waterdeep. In this form he appears as a dotting old man. In his natural form he looks like a hideous cross between an octopus, worm and insect.