The Ravager is evolved from the Viralisk following a brief crysalis phase.
Although the Ravager loses its predecessors ability to infest small units, the Ravager makes up for this in its assault potential.
The Ravager's living chemicals within its body have been augmented to not infest what comes in, but to produce deadly Plaguelings to be launched out at the Ravager's targets.
These Plaguelings are highly volatile, exploding on contact with the intended victim and showering it with acid.
As deadly as the Ravager may be, it is a slow Zerg breed, completely defenseless against aerial enemies, and relies on retreating while burrowed to escape dangerous situations.