Vaal Hazak

Vaal Hazak is an Elder Dragon first introduced in Monster Hunter: World.

Physiology
Vaal Hazak is a dragon that appears to have long sickle-like claws on each finger. Its face has long, sinewy features that look like decaying tissue or possibly inspired by the stoplight loosejaw. When it flaps its wings, it appears to stir up toxic clouds, possibly exuding the Effluvium bacteria found in the Rotten Vale. It is shown to have a mottled maroon hide with a rather dull greenish-gray underbelly. Its wings are also sinewy — looking like spider webs when outstretched.

Vaal Hazak appears to consume the life force of other wildlife nearby in the form of a grayish ash-like fog that trails from the victim back to patches on Vaal Hazak’s body. It has also demonstrated necromancer-like abilities, bringing Girros corpses back to life as allies. The ash-fog it exudes limits the maximum life of Hunters in contact with it.