The Lost Mines of UH
The Mad King
Leader of the goblins at Cragmaw Hideout, The bugbear is filled with delusions of grandeur. He is not entirely sane, often refering to himself in the 3rd person and conversing with his pet wolf, Ripper.
The party learned that Klarg was commanded by someone or something known as The Black Spider to capture Gundren Rockseeker and deliver him and the map he was carrying to the chief of the Cragmaws at a place called Cragmaw Castle.