The Guardian of Goaz was the Guardian of the Skull of Goaz. The final Guardian was based in the Dome of Nightmares, where it protected the Skull with its very life.
It resembled a black skeleton surrounded by swirling orange and purple flames.
The Guardian of Goaz existed only in a small garden in the very centre of the Dome of Nightmares. Its task was to protect the Skull of Goaz, which it did until it was destroyed by Kazdan Zell, Zoltan Kaufmann, Lilith Lostre, Edward Grey and Alyaa Maxis.