The Durbuluk Clan of Goblins:

The Durbuluk Clan had resided in the Sunless Citadel for a hundred years until the party destroyed them.  Durbuluk roughly translates to Dominators and their sign is a crudely rendered goblin face.

They were led by Chief Durrn and Grenl, their cleric.  Balsag was a mighty bugbear who lent his muscle to the clan with the use of his mighty morningstar Skullcrusher and his pet dire rats Grip and Fang.

Twelve years ago they began to serve Belak the Outcast.

The clan was mostly destroyed by the part, with only Grenl surviving to lead the women and children into the Underdark and out of the Sunless Citadel.