Nurgle is a Chaos God of Disease, Decay, and Destruction, sometimes also referred to as the Plague Lord.
Units
Nurglings: Little mischievous demons. Their smalls size is compensated by the fact that they're usually form hordes, attacking in great numbers.
Nurgle Helbrute: A twisted, frenzied variant of the Chaos Dreadnought, a heavy armored, corrupted unit.
Plague Ogryn: Tough Chaos cultist unit, an abhuman (human evolved in harsh conditions), corrupted by the power of Nurgle.