He is the main antagonist of Hytale's storyline. Unlike Gaia he represents only one element, the void. Furthermore, he is the leader of the void creatures.
The Varyn is part of the Void family. Void creatures are corrupted minions controlled by the main antagonist in Hytale, called Varyn. They all have green symbols in some form in their appearance, to show they are still under control by Varyn. These minions can be found in all zones scattered around Orbis.