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Infestor SC2 Cncpt2

The infestor

The infestor is a zerg unit which appears in StarCraft II.


Infestor SC2 DevHead2

An infestor's visage

Evolved from the borbu matriarch,[1] and in use by the zerg by 2503,[2][3] infestors are one of the more insidious new additions to the Swarm.[1]

Infestors are carried by sturdy legs that secrete a corrosive substance that softens the soil and allows them to burrow in the blink of an eye.[4] Unlike most zerg strains, infestors have the ability to move while burrowed.[1] Writhing sensory tentacles that extend from the infestor's jaw serve as a secondary, albeit more powerful, set of eyes and ears by means of thousands of microscopic growths that function as biological trancievers. Further Dominion research on the subject has been slow and fruitless.[4]

Offensive AbilitiesEdit

Infestor SC2 Art2

An infestor

Infestors are used to support hydralisks and roaches on the battlefield.[5]

Hardened plates of assimilated mold and fungus offer infestors protection from enemy fire and would-be predators. This armor also functions as a weapon, as the infestor can turn the inner layer of its carapace into a viscous fluid that breaks down matter in seconds and immobilizes anything it comes in contact with.[4] This can be spewed over enemy targets with dire effects.[1]

Infestor SC-FM Art1

The infestor

Infestors are known to ingest infested marines to use as terror weapons on the battlefield,[4] carrying them to a combat zone.[1] The marines are stored in thick flesh cavities until the infestor regurgitates them to face their former compatriots, or anything else that might pose a threat to the Swarm.

Perhaps the infestor’s most dangerous feature is the neural parasite, a symbiotic creature living within infestors that, when spat, attaches to an enemy and controls its mind for a short period of time.[1] This is inserted through a parasitic stinger, a flexible appendage that is capable of boring through both natural and organic plating. The parasite then is then inserted directly into the target's central nervous system. The amorphous, multi-mouthed parasite cannot survive for long within a foreign body, but whatever horrific deeds the host carries out while under the influence of the Swarm will leave everlasting scars.[4] Seeing the immense potential of this parasite, the Queen of Blades carried out incubation of new strains capable of living longer outside of their host.[1]

Game UnitEdit

Infestor SC2 Rend1



Infestation specialist

  • Anti-infantry
  • Anti-structure
Maximum energy

200 (init. 50) Energy Terran SC1





Sight range



100 Minerals Terran SC1


150 ZergVespene SC2 Game1


2 ZergSupply SC2 Icon1

Build time

36 Time SC2 Game1

Evolves from



Infestation pit




2.8 (burrowed)








x 1.3

Collision radius


Hit points


Hit point



0 SC2ZergCarapace

Armor type



Infested terran



Kill score




Infestors are strong against marines, mutalisks, and immortals, but are weak against ghosts, ultralisks, and high templar.[6]

The infestor is a ground support unit which is capable of moving while burrowed. The infestor does not have a standard attack. The infestor's abilities are largely geared towards enemy harassment, since it can spawn infested terrans even while burrowed; if snuck behind enemy lines, one can cause havoc among workers. It can also temporarily take control of a single enemy unit with its Neural Parasite ability.

When an infestor moves, it leaves behind a trail of slime. When burrowed, visible cracks on the surface can be seen by its controlling player.

Legacy of the VoidEdit

In early versions of Legacy of the Void infestors gained the Aggressive Mutation ability. This grants a flat damage bonus to allied units, making it especially effective when used on zerglings and other cheap units with a low cooldown.[7] This ability was removed in the final version of the game. In patch 3.8, infestors gained the ability to use neural parasite and fungal growth while burrowed.


Many zerg ground units may burrow, become invisible and may be revealed primarily by detectors, and may not move or attack. Exceptions are the roach, which may move while burrowed, the infestor, which may move and cast Infested Terran,[8] and the 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 smartcast.

Hotkey R
Cost 2 seconds to burrow, 1 second to unburrowTime SC2 Game1
Purchased from Hatchery/Lair/Hive
Hotkey B
Cost 100 Minerals Terran SC1 100 Gas Terran SC1 71Time SC2 Game1
Required Lair (WoL)
Hatchery (HotS/LotV)

Like many zerg ground units, the infestor can burrow. However by default the infestor can move while burrowed. The infestor can use all of its abilities while burrowed. It moves faster under the creep.

Infestors cannot burrow underneath structures, not even destructible rocks or pylons. The pylons project a strong magnetic field which makes the ground beneath them impenetrable by "mortal means".[9]

Purchased from Automatically researched
SC2 Neural Parasite Icon
Neural Parasite

The infestor takes control of target enemy unit. Units maintain their upgrades and special abilities while controlled. Control reverts to the original player if the infestor is killed, when duration ends, or when the range between the infestor and the controlled unit grows too large.

Controlled probes and SCVs can build structures; the SCV will leave a structure unfinished if it reverts during the construction. Affected drones cannot mutate structures. Larva can be morphed, but hatched units return to enemy's control once the effect has worn off.

Affected units cannot be loaded into transports, and ability cannot be used on transports carrying units.

Ability can be used on enemy infestors. Units mind controlled by affected infestors remain under player's control for normal duration, even after affected infestors revert to opponent's control.

In Legacy of the Void, this ability can be used while burrowed.

Hotkey E
Cost 100 Energy Terran SC1
Range 7[10] (unit can move up to 5 extra spaces away while still being controlled.)[11]
Duration 15
11 (LotV)Time SC2 Game1
Purchased from Infestation pit
Hotkey E
Cost 150 Minerals Terran SC1 150 Gas Terran SC1 79Time SC2 Game1
SC2 Fungal Growth Icon
Fungal Growth

An infestor launch a projectile with a speed of 15;[12] enemy units within the area of effect are instantly immobilized and suffer 30 damage over 4 seconds. Cloaked and burrowed units are revealed.

Fungal Growth stops the use of Blink.

In Legacy of the Void, this ability can be used while burrowed.

Hotkey F
Cost 75 Energy Terran SC1
Range 10[12]
Duration 4 secondsTime SC2 Game1
Purchased from Automatically researched

Summons an infested swarm egg, from which hatches an infested terran.

The infestor can use this ability while burrowed.

Hotkey T
Cost 25 Energy Terran SC1
Duration 21Time SC2 Game1


PathogenGlands SC2 Game1
Pathogen Glands

Increases infestor starting energy by 25.

Purchased from Infestation pit
Hotkey G
Cost 150 Minerals Terran SC1 150 Gas Terran SC1 57Time SC2 Game1
  • +1 bonus to armor per level for zerg ground units.
Purchased from Evolution chamber
Hotkey C
Level 1
Cost 150 Minerals Terran SC1 150 Gas Terran SC1 114Time SC2 Game1
Level 2
Cost 225 Minerals Terran SC1 225 Gas Terran SC1 136Time SC2 Game1
Required Lair
Level 3
Cost 300 Minerals Terran SC1 300 Gas Terran SC1 157Time SC2 Game1
Required Hive


Infested terror
Infested Terror

10 Achievement SC2 Game1


Destroy 30 units with Infested Terrans in a single League game.

Would you kindly
Would You Kindly...

10 Achievement SC2 Game1


Destroy 5 units with a single Neural Parasited unit in a League game.


Spoiler alert. This achievement is a reference to the game BioShock.


Infestor SC2 DevHead1

Development Portrait

Main article: Infestor/Development

Blizzard devised a new infestor model over the course of development. StarCraft II beta files label(ed) this old incarnation as a swarm host.[13]

In the campaign, the infestor's Neural Parasite is permanent and doesn't need to be channeled, and the infestor has the Consume ability from the viper. They cannot create infested terrans. These are instead generated through plot-based mechanics (the virophage).

Special Infestor StrainsEdit


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Blizzard Entertainment staff. 2010-07-24. Units: Infestor. Blizzard Entertainment. Accessed 2010-07-24.
  2. Kenyon, Nate. (September 27, 2011). StarCraft: Ghost: Spectres. Simon & Schuster (Pocket Star). ISBN 978-1439-10938-0.
  3. September 27, 2011. "Timeline." StarCraft: Ghost: Spectres. Simon & Schuster (Pocket Star). pp. 393-416. ISBN 978-1439-10938-0.
  4. 4.0 4.1 4.2 4.3 4.4 2014-09-25, Infestor Science. Blizzard Entertainment, accessed on 2014-09-27
  5. Overview: Zerg, accessed on 2011-01-13
  6. Blizzard Entertainment staff. 2010-07-24. Units: Infestor. Blizzard Entertainment. Accessed 2010-07-24.
  7. Blizzard Entertainment. 2014-11-07. Legacy of the Void - Multiplayer Update: Zerg. Blizzard Entertainment. Accessed 2014-11-09.
  8. Blizzard Entertainment Staff. 2010-07-24. Infestor. Blizzard Entertainment. Accessed 2010-07-24.
  9. No, they cannot move under buildings. The ground is too compacted from the weight of the structure and the Infestor cannot tunnel through. Even Protoss Pylons make everything really hard to move through because a strong magnetic force from the Pylon makes the ground beneath it nearly impenetrable by mortal means.

    It's not really practical for the gameplay. You get "units inside units" if the the Infestor could hide under structures which is never a happy place to be. Selection gets difficult, targeting becomes challenging, etc.
    Cavez. 2009-02-26. (Question) Infester movement under buildings? StarCraft II General Discussion Forums. Accessed 2009-02-27.
  10. StarCraft II: Wings of Liberty - Patch 1.4.0. Accessed 2011-09-20.
  11. Blizzard Entertainment. StarCraft II Map Editor. (Activision Blizzard) (in English). July 27, 2010
  12. 12.0 12.1 Spyrian. 2012-12-18. Beta Balance Update #10 – December 18, 2012. Heart of the Swarm Beta Discussion Accessed 2012-12-19.
  13. 2010-02-28, StarCraft II Beta Game Images. StarCraft Legacy. Accessed on 2010-06-22