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Headcrab Shell

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Headcrab Shell
Production information
Affiliation

Combine

Manufacturer

Combine

Technical specifications
Ammunition Type

Headcrabs

Game information
Entity

N/A

The Headcrab Shell, also known as "Headcrab canister" or "Headcrab rocket", is one of the more nefarious pieces of technology possessed by the Combine. These shells rain down from the sky and release a payload of deadly Headcrabs. Due to its use of living organisms in attacks, Headcrab Shells are classified as a form of biological weaponry.

Contents

[edit] Overview

The Headcrab launcher seen in St. Olga's church in Half-Life 2: Lost Coast.

These large projectiles can crash through most barriers, embedding themselves several feet, even into concrete. At this point a hatch at the rear of the shell opens and reveals a metallic pipe-shaped container. There are several hoses that seem to spray the Headcrabs with some sort of gas or mist, possibly to enrage them or to speed up zombification. Up to a half-dozen Headcrabs climb from the end of this pipe and leap out into the crash site. Usually these are only basic Headcrabs although Fast Headcrabs have been observed exiting a shell. Poison Headcrabs also seem to be used in shells, but have only been seen emerging from unlaunched Headcrab Shells during Lost Coast and in the chapter Exit 17 of Half-Life 2: Episode One, in which only one Headcrab is included per shell. A possible instance in Half-Life 2 where the player can enter a house which has been bombed by a poison Headcrab Shell is during the Highway 17 mission. Searching the house will reveal several poison Headcrabs and a poison zombie, but no other types, indicating that the shell contained poison Headcrabs.

Once landed the Headcrabs go about their usual practice of attempting to kill or enslave any human they encounter. The Headcrabs will then simply infest the surrounding area, concealing themselves by burrowing into the nearby soil or taking up residence in pipes, vents, and other darkened hiding places. This infestation renders a significant area surrounding the crash site completely inhospitable to human life. While one shell is not a huge threat by itself, as Headcrabs are generally weak, the effects can be horrific when the Combine shell an area with scores of these munitions. This happened to the mining town of Ravenholm prior to the events of Half-Life 2 which was inhabited by a large number of escapees from City 17 and was quickly overwhelmed by the parasites, to the point where there is only one known human survivor, Father Grigori, left in the town.

A Headcrab Shell in the Canals.

Throughout Half-Life 2, Headcrab Shells are fired from an unseen launcher somewhere in the player's vicinity. In Lost Coast, a working launcher is seen in St. Olga's monastery. The Headcrab Shells are fired with a loud explosion and streak towards their target in a steady arc, leaving temporary vapor trails behind and emitting a noise not unlike a conventional mortar shell.

The launcher itself has a large metal barrel with a plunger inside which fires Headcrab Shells roughly every 10 seconds. A sign on it indicates, "Warning, Moving parts can crush and cut. Keep hands and other objects clear during operation." It is easily destroyed by dropping metal objects like candlesticks into the chamber. Even though the Lost Coast chapter was cut, it is very likely that this depiction of the launcher is canon.

In the Half-Life 2 chapter Water Hazard, Headcrab Shells which don't deploy anything are still shown to be very powerful. One can be shown toppling a massive brick factory chimney, almost crushing Gordon in his airboat.

The Combine uses Headcrab Shells in much the same way as they use Manhacks, only on a wider scale, being an efficient way to eliminate entire centers of Resistance. In addition to being used on their own as an effective weapon, individual Headcrab Shells are also used in a tactical role during some operations where they are used to weaken smaller targets, create disarray, and force enemies out of entrenched positions.

Despite these horrific implications, this particular Combine technology does have one major weakness. Since the Headcrabs are effectively bottlenecked into the opening, they can be defeated easily before they are able to climb out of the shaft by simply standing near it and shooting or beating them to death as they jump out.

[edit] Behind the scenes

The concept was first intended for the cut Sacktick[1] and as a device attached to a Gonarch, the Big Momma Pod.[2]

[edit] Gallery

[edit] List of appearances

[edit] Notes and references

Weapons of the Half-Life universe
Half-Life .357 Magnum · Black Mesa Crossbow · Crowbar · Glock 17 · Gluon Gun · HECU Double Turret · HECU RPG · HECU Sentry Turret · HECU SPAS-12 · Hivehand · Land Mine · Laser Tripmine · M198 Howitzer · M2 Browning Machine Gun · M202A1 FLASH · Mk 2 Grenade · MP5 · Satchel Charge · Snark · Snark Mine · Tau Cannon · Xen Sentry Turret
Half-Life: Opposing Force Barnacle Gun · Black Ops Mortar · Combat Knife · Desert Eagle · Displacer · M249 Squad Automatic Weapon · M40A1 Sniper Rifle · Mark IV Thermonuclear Device · Pipe Wrench · Shock Roach · Spore Launcher
Half-Life 2 .357 Magnum · Alyx's Gun · Annabelle · Combine Sentry Turret · Combine SPAS-12 · Crowbar · Headcrab Shell · Hopper Mine · Hunter-Chopper Bomb · Laser Tripmine · Manhack · MK3A2 Grenade · MP7 · Overwatch Sniper Rifle · Overwatch Standard Issue Pulse Rifle · Pheropods · Ravenholm traps · Resistance Crossbow · Resistance RPG · Rollermine · Stun Baton · Suppression Device · Tau Cannon · USP Match · Zero Point Energy Field Manipulator
Half-Life 2: Deathmatch S.L.A.M
Portal Aperture Science Handheld Portal Device · Aperture Science Sentry Turret · Rocket Sentry
Half-Life 2: Episode Two AR3 (non-existent) · Autogun · Magnusson Device
Half-Life (cut) Black Hole Gun
Half-Life: Opposing Force (cut) Flash Grenade
Half-Life 2 (cut) AK-47 · Brickbat · Combine Guard Gun · Combine Launcher · Desert Launcher · FIM-92 Stinger · Fire Extinguisher · Flare Gun · GR9 · HK-707 · Hopwire Grenade · Ice Axe · Immolator · Incendiary Rifle · Molotov Cocktail · MP5K · MP7 · Physgun · Pulse Shield · Rollerwand · S.L.A.M · Sniper Rifle · Socket Wrench · Sticky Launcher · Stun Baton · Thumper · XM29 OICW
Half-Life 2: Lost Coast
(cut from Half-Life 2)
Harpoon
Half-Life 2: Episode One (cut) Vortex Hopwire
The Combine
Leaders / key figures Advisors · 314 URB-LOC 0017 Advisor · Barn Advisor · Wallace Breen
Minor members Barney Calhoun
Humanoid units Civil Protection · Overwatch Soldier · Overwatch Sniper · Overwatch Elite · Stalker
Synth units Synth · Advisor Pod · Crab Synth · Combine Dropship · Combine Gunship · Hunter · Mortar Synth · Shield Scanner · Strider
Mechanical units City Scanner
Weapons Autogun · Headcrab Shell · Hopper Mine · Hunter-Chopper Bomb · Manhack · MK3A2 Grenade · MP7 · Overwatch Sniper Rifle · Overwatch Standard Issue Pulse Rifle · Rollermine · Sentry Turret · SPAS-12 · Stun Baton · Suppression Device · USP Match
Vehicles Advisor Platform · Armored Personnel Carrier · Hunter-Chopper · Razor Train
Technology Battery · Breencast · Charger · Citadel Core · Citadel · Barricade · Binoculars · Bunker · Camera · Cell · Confiscation Field · Dispenser · Door Lock · Elevator · Emitter · Interface · Dark Energy · Depot · Dr. Breen's Private Reserve · Energy Orb · Field Bridge · Force Field · Heavy Door · Light · Medkit · Memory Replacement · Monitor · Overwatch Voice · Power Generator · Restrictor · Smart Barrier · Supply Crate · Suppression Field · Teleportation · Television · Vehicles · Watchtower
Locations Citadel · Citadel Core · City 14 · City 17 · City 17 Trainstation · Combine Overworld · Depot · Nova Prospekt · Technical Trainstation
Other Anticitizen · Citizen · Overwatch
Leaders / key figures (cut) The Consul · Vance
Minor members (cut) Animal · Mambridge · Peters
Humanoid units (cut) Alien Assassin · Alien Combine Soldier · Combine Assassin · Conscripts · Cremator
Synth units (cut) Combine Guard · Combine Super Soldier · Combine Synth Elite Soldier · Sacktick · Unidentified Synth · Wasteland Scanner
Weapons (cut) Combine Guard Gun · Combine Launcher · Desert Launcher · FIM-92 Stinger · GR9 · HK-707 · Hopwire Grenade · Immolator · Incendiary Rifle · Laser Tripmine · MP5K · MP7 · Sniper Rifle · XM29 OICW
Vehicles (cut) AirEx Truck · Combine SWAT Truck · M2A3 Bradley · Merkava · School Bus
Technology (cut) Binoculars · Combine Big Momma Pod · Combine Assassin Tank · Door Tower · Heel Springs · Sensor Gate · Vorti-Cell
Locations (cut) Air Exchange · City 40 · City 49 · Combine Factories · Manhack Arcade · Skyscraper · Vance Headquarters · Weather Control
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