Brogan Varok was a Cabalum-era king of the Duergar within Uldrazim, ruling from his familial seat of Varok Hold. His known family line died in the Cataclysm.
Brogan Varok was a formidable Duergar warrior-king, who had a great white beard, and wore plated stone armor and a purple-crystalline crown. His greataxe had a magically-charged amethyst embedded in its blade.
Brogan Varok was obsessed with the safety of his people, and was a staunch isolationist. During the Cabalum, contact with the surface and travel to Al'tehrun proper was outlawed. His keep within Uldrazim, Varok Hold, was an extreme showing of this, with its tunnel and grated exterior and secret escape tunnels. He desired greatly to keep his family safe, and was overcome with happiness and worry when his daughter was born (during the Cataclysm - the girl was never named).