Vaal Hazak Ecology

In-Game Information
A grotesque Elder Dragon, that inhabits the deepest part of the Rotten Vale. It uses the fatal vapor of the vale in what appears to be a symbiotic relationship.

Habitat Range
Vaal Hazak has been known to inhabit the Rotten Vale, where it has control over the effluvium.

Ecological Niche
Like most Elder Dragons, Vaal Hazak's ecological niche is something of a mystery. It is possible that it is the source of the effluvium virus. It is possible that feeds on monsters in the Rotten Vale such as Girros.

Biological Adaptations
Vaal Hazak has the unique ability to control the concentration of effluvium in the Rotten Vale, and even use it as a defensive barrier against attackers. It is also possible that it has the power of necromancy due to its ability to raise Girros from the dead and then absorb the effluvium back from them in order to boost its own power.

Behavior
Vaal Hazak is aggressive the instant it feels threatened and will attempted to use its power over the effluvium to defeat its opponent. Vaal Hazak will defend itself against Odogaron when attacked, and will throw it off causing Odogaron to flee the area.