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Poison Headcrab

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Combine era
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Poison Headcrab
General information
Affiliation

Xen wildlife

Type

Headcrab subspecies

Personal information
Health

35

Attack(s)

Poison bite (10 damage, also drops the player's health to 1 instantly, which eventually regenerates)

Game information
Entity
  • npc_headcrab_poison
  • npc_headcrab_black
Designer(s)

Ted Backman[1]

The Poison Headcrab (also commonly known as the black headcrab) is a Headcrab subspecies previously unknown before the Combine invasion. Like its relations, the Poison Headcrab is able to infest and mutate humans into Zombies.

It is unknown whether Poison Headcrabs are a natural subspecies never encountered on Xen or a result of Combine genetic manipulation of the Standard Headcrab for use in Headcrab Shells.

Contents

[edit] Overview

The Poison Headcrab can be identified by its dark colored skin (sometimes with a wet sheen) and thick hairs on the joints of its inward bending, spider-like legs. On the Poison Headcrab's legs are white bands that encircle the knee joints and the creature's dorsal markings are similar to those of a species of orb-weaving spider.[2]

[edit] Behavior and skills

At walking pace, the Poison Headcrab is the slowest moving headcrab, but will panic and run away if attacked. Poison Headcrabs move slowly and cautiously when maneuvering but will leap with incredible speed while releasing an angry squeal when a suitable host is in a clear line of sight. As an ambush tactic, it will leap at and poison a viable host in the attempt to create a Poison Zombie. Poison headcrabs make a sound similar to Rattlesnakes when searching for prey.

[edit] Venom

The Poison Headcrab delivers its extremely powerful neurotoxin via the four fangs on its "beak". In gameplay, the neurotoxic headcrab venom will reduce the player's health to 1% immediately regardless of the current health amount. After a period of time, the HEV suit will provide an antidote that will restore the lost health, with 10% of it being lost from the headcrab's physical damage (since it does 10 damage).

Contrary to popular belief, it IS possible for a poison headcrab to kill the player (only in Episode Two. They cannot kill in any way in previous episodes). Though in order for this to happen, the player must have 2-10 health remaining. However, if the player has exactly 1 health, they will not die to the headcrab's attack, even if they're not under the effect of the poison. This means that, for example, if a player has 41 health, they will not die to the headcrab if bitten enough times, as they will eventually be left with 1 health. But if the player had, say, 36 health, they will die if bitten enough times.

[edit] Tactics

Poison headcrabs can be difficult to deal with, as their bite can leave you vulnerable to other enemies. It's best to focus on the headcrabs first, before attacking other foes. If there are barnacles around, you can lure poison headcrabs into their tongues to get a quick kill and conserve ammo. However, this should not be considered a tactic in itself as it can be highly risky and very unrewarding. It's better to attack these vicious creatures directly.

The gravity gun can stun poison headcrabs with two jolts. A third jolt, delivered with sufficient speed, will reduce the headcrab to a few bloody lumps on the floor. If you are not confident to use this method (it can be hard to aim the gravity gun precisely), you must keep away from the headcrab while firing into its main body. If you are bitten, run away from the crab(s) and let your health recover. Also notable is that poison headcrabs are almost never deployed from Headcrab Shells.

[edit] Trivia

Beta Poison Headcrab.
  • According to Half-Life 2: Raising The Bar, the development team noticed that upon hearing the Poison Headcrab's sound playtesters would frantically start looking around for the Poison Headcrab so they could destroy it, regardless of any other present dangers.[3]
  • The Poison Headcrab's second scream, ph_scream2.wav, appears to be a sped-up version of the Fast Zombie first scream (fz_scream1.wav, the "Howie Scream").[4]
  • If severely hurt, the Poison Headcrab will attempt to hide or run away from the player, in hopes that it will not be killed. It is also interesting to note that on rare occasions, the Poison Headcrab will ignore the player and try to seek refuge in a corner or secluded area.
  • Poison Headcrabs, like any other Headcrab, will die if blasted three times with Gravity gun.
  • An interesting note is that when a Poison Headcrab's maw is looked at closely, a skull-and-crossbones can be seen in the flesh.
  • Poison Headcrabs are extremely dangerous to NPC characters, as they lack Gordon's HEV suit and thus have no access to the antidote for the neurotoxin. As a result, a hit from a poison headcrab will permanently reduce an NPC's health to 2, allowing them to be instantly killed the next time they receive damage. Alyx Vance, Barney Calhoun, and Father Grigori have regenerating health, and thus the poison headcrab is less of a threat to them provided they are not under heavy attack from other enemies.
  • In Half-Life 2, the Poison Headcrab has a minimum distance before it can attack and if crouching directly in-front of it, it will not attack and instead crawl backwards to get minimum range to jump.

[edit] List of appearances

[edit] Notes and references

  1. Half-Life 2: Raising the Bar
  2. Araneus diadematus
  3. Raising the Bar
  4. Half-Life 2 sound files
Xen
Creatures Alien Controller · Alien Grunt · Barnacle · Boid · Bullsquid · Chumtoad · Gargantua · Headcrab · Houndeye · Ichthyosaur · Leech · Manta Ray · Nihilanth · Snark · Tentacle · Vortigaunt
Headcrabs Headcrab · Fast Headcrab · Gonarch · Lamarr · Poison Headcrab · Standard Headcrab · Headcrab Shell
Zombies Zombie · Fast Zombie · Gonome · Poison Zombie · Standard Zombie · Zombine
Vortigaunts Vortigaunt · Vortigese · All-Knowing Vortigaunt · R-4913 · Sweepy · Uriah · Victory Mine Vortigaunt · Vortigaunt Camp · Vortigaunt Shepherd · X-8973
Flora Light Stalk · Fungus · Tree
Weapons Sentry Turret · Hivehand · Snark · Snark Mine
Other Crystal
Creatures (cut) Archer · Charger · Fast Walker · Flocking Floater · Kingpin · Mr. Friendly · Panther Eye · Sand Barnacle · Snapbug · Stukabat
Headcrabs (cut) Brickbat
Vortigaunts (cut) Vorti-Cell
Weapons (cut) Black Hole Gun
Creatures
Antlions Antlion · Antlion Grub · Antlion Guard · Antlion Guardian · Antlion Soldier · Antlion Worker
Headcrabs Headcrab · Fast Headcrab · Gonarch · Poison Headcrab · Standard Headcrab
Race X Gene Worm · Pit Drone · Pit Worm · Shock Trooper · Sprite · Voltigore
Synths Synth · Advisor Pod · Crab Synth · Combine Dropship · Combine Gunship · Hunter · Mortar Synth · Shield Scanner · Strider
Xen Alien Controller · Alien Grunt · Barnacle · Boid · Bullsquid · Chumtoad · Gargantua · Headcrab · Houndeye · Ichthyosaur · Leech · Manta Ray · Nihilanth · Snark · Tentacle · Vortigaunt
Zombies Zombie · Fast Zombie · Gonome · Poison Zombie · Standard Zombie · Zombine
Other Advisor
Antlions (cut) Antlion King
Synths (cut) Combine Guard · Combine Super Soldier · Combine Synth Elite Soldier · Sacktick · Unidentified Synth · Wasteland Scanner
Xen (cut) Archer · Charger · Fast Walker · Flocking Floater · Kingpin · Mr. Friendly · Panther Eye · Sand Barnacle · Snapbug · Stukabat
Other (cut) Alien Fauna · Hydra · Particle Storm · Skitch · Stampeder · Tripod Hopper
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