Vorugal

Vorugal, the Frigid Doom, was an ancient white dragon and a member of the Chroma Conclave. As an NPC, Vorugal was played by Matthew Mercer.

Background
According to Lady Allura, Vorugal had been known to wander the wastes north in Othanzia, but had not been seen as far as Emon or Tal'Dorei. Some of Vorugal's offspring wandered farther. In fact, Lady Allura believed that a dragon, called Skysunder, who was destroyed by Vox Machina and sealed in the Frostweald, was one of Vorugal's children.

Attack of the Chroma Conclave
In Chapter 4, the Chroma Conclave attacked Emon and other cities across Exandria. Vorugal was part of the initial attack on Emon and battled Vox Machina at Greyskull Keep before moving on to new targets on the command of the Chroma Conclave's leader, Thordak.

Occupation
After the Chroma Conclave's initial attacks on Emon and around the world, Vorugal occupied Wildmount on the ruins of Draconia.