Stank

The stank is a variant strain of the ultralisk. During the Second Great War, a number of them were spawned on Meinhoff.

Game Unit
The stank appears in the map Left 2 Die as a zerg NPC unit. The hit points increase according to the selected difficulty (ranging from 2000 on casual to 5000 on brutal)

It has its own portrait in the map editor but uses the ultralisk portrait in-game.

Achievements
On hard difficulty, killing a stank with no losses for it yields an achievement.