This article concerns
StarCraft II gameplay. You may be looking for:
"You're not gonna believe this! Defilers are here, and they'll be able to shield other zerg around them."
Defilers appear in .
The bones of defilers appear in
as zerg research objectives in the level " Wings of Liberty The Great Train Robbery", and in the mission " Heart of the Swarm Fire in the Sky" as evolutionary objectives for Kerrigan. 
Feral defilers appear in mission " Nova Covert Ops Sudden Strike."
Infects all enemy units and buildings in area of effect, dealing 300 damage over 40 seconds. Cannot reduce units below 1 HP. Reveals cloaked and burrowed units caught in the area of effect for its duration.
Allied units in the area of effect take 0 damage from ranged attacks.
zerg ground units may burrow, becoming invisible and revealed primarily by detectors, and may not move or attack while burrowed.
Roach, which may move while burrowed
Lurker, which may attack while burrowed
Infestor, which may move while burrowed Baneling, which can detonate while burrowed.
Some units can unburrow via
autocast, causing them to emerge and attack when an enemy moves into range.
The ability is not
2 seconds to burrow, 1 second to unburrow
Hatchery ( HotS/ LotV)
+1 bonus to armor per level for zerg ground units.
The untextured defiler model
, an untextured model of the defiler was included in the StarCraft II Galaxy Map Editor for . StarCraft II: Heart of the Swarm The model is identical to the model later used in  Covert Ops.