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The Poison Zombie is the resulting Zombie of a human host under the control of a Poison Headcrab. The mutations that take place produce a bloated, slow-moving zombie that is capable of carrying additional Poison Headcrabs.
Poison Zombies are bloated, reddish purple, slow-moving Zombies. They are almost always seen carrying an additional three Poison Headcrabs on their back. It appears that the Poison Zombie's model is an old man's, but its stooped posture and shuffling gait could also be caused by the weight of the attached headcrabs, or (as seen by the exposed spinal column) because it's missing all the supportive muscles from its back which would allow it to pull the upper torso into an upright standing position.
The Poison Headcrabs riding on the zombie's back can leap off when needed to attack on their own, but cannot reattach themselves to the poison zombie once left.
Another trait that distinguishes the Poison Zombie from other zombie types is its endurance. Poison Zombies can take three times as much damage as other zombies before collapsing.
Poison Zombies themselves are not poisonous, and rely on the hitch-hiking Poison Headcrabs to attack first. Then, it resorts to its claws. Poison Zombies can be detected by their loud, strangulated breathing and muffled groans. They also emit loud, whale-like howls.
Poison zombies are unique in the fact that the headcrabs attached to their bodies appear to be interacting with their host. While other Headcrab Zombies serve as a host for individual headcrabs, the poison headcrabs attached to a poison zombie appear to be from it. The fact the poison zombie is off color and bloated would suggest that the headcrabs are either sucking nutrients from the body (which would explain why the headcrabs on a Poison Zombie's body seem to pulse), are causing enough damage to make the host lose almost all of his blood, or are using the body to store or create their acute neurotoxin. It has also been speculated that poison headcrabs may lay their eggs in their hosts' bodies, which would explain the hosts' bloated appearance and the multiple poison headcrabs which cover them. It is also worthy to note that if the player kills the Poison Zombie before it can "release" the poison headcrabs from its back, the headcrabs will also die.
It should be noted that unlike other types of zombies, Poison Zombies cannot be cut in half.
Poison Zombies are first encountered in Half-Life 2 Chapter 6: "We Don't Go To Ravenholm..." after the player gets the Shotgun and takes the elevator. In Episode One, they are first encountered in the Hospital, in the Chapter Urban Flight. In Episode Two, they are first encountered in an abandoned Resistance outpost, where a Combine Thumper can be found, in the Chapter This Vortal Coil.
Poison Zombies can take a lot more damage than other zombies (roughly 300%), and have better attack capabilities.
- The most effective weapon against Poison Zombies is fire; when hit, the zombie will set alight the headcrabs as well. A very good tactic is to grab a propane tank or gas canister, pop out of cover, light up the zombie, and then take cover before it throws more headcrabs. It will die and take its passengers with it without causing any damage. The fire will take a while to kill them so try to stay away from it if possible. If no flammable objects are present, take advantage of headcrabs and their host's flammable nature by chucking hand grenades or firing MP7 grenades. If grenades are not available, try to find explosive barrels. However, while the explosion from a grenade and/or an explosive barrel cannot light the Poison Zombie up, it can inflict good damage on it.
- At close range, move around while attacking to avoid being hit by the thrown headcrabs. Normally, there are three riding headcrabs. When a thrown Poison Headcrab comes into contact, health points will drop to 1, but will gradually increase by increments of 10 as the HEV Suit administers an antidote to the venom. Therefore, it is advised not to use the Crowbar against incoming thrown headcrabs, especially when being engaged by other enemies like the Combine Soldier and Zombies, such as the Fast Zombies and the Zombine. The Gravity gun can sometimes push back the incoming Poison headcrab, but this is not always safe. If sufficient room is available, wait for the Zombie to throw all Headcrabs off its back. The zombie should be a minimal threat without the hitch-hiking poison headcrabs on its back, thus allowing the player finish this Zombie with lighter weaponry or the Crowbar.
- When the player has an energy core to spare, it is recommended to equip the Pulse Rifle and use its alternative fire on the Zombie, which will cause the Zombie to disintegrate. All headcrabs will detach, but instantly touch the fusion orb as well which means immediate death.
- When using the crossbow against it, get away from the poison zombie and aim at the headcrabs on its back. This way, the poison zombie should die without releasing its poison headcrabs.
- There is no difference between the Poison Zombie and the Half-Life 2 Beta "Fat zombie," aside from the spine on its back and the skin. This is easily notable by the feet.
- The Poison Zombie appears to be several times stronger than its brethren; on multiple occasions, Poison Zombies can destroy entire doors. In Half-Life 2: Episode One, in the hospital level, several regular zombie are seen trying to claw open a doorway, but it is not until the Poison Zombie arrives when, with tremendous, seemingly explosive force, the door is destroyed.
- When the Poison Zombie dies, there are two sounds for his death. The end of one of the files sounds like the laugh (or possibly a cry) of an old man, indicating that the zombie NPC seen in-game could have been an older man when he was human.
- Oddly, some of their sounds seem to be reversed donkey and bovine sounds.
- When a Poison Zombie makes it into the path of a Barnacle, the game will crash. This can be seen without the use of cheats/mods towards the end of Anticitizen One in the tunnels after Alyx is captured. The player should lure the Poison Zombie towards the nearest Barnacle using the chain-link fence as a ramp. No attempts have been made to fix this.
- The Poison Zombie's second breathing sound (pz_breathe_loop2.wav), sounds like a deeper variant of Left 4 Dead 2's Jockey.
- If the player uses the cheat "notarget," it can be seen that the headcrab on the head of the Zombie is bouncing.
List of appearancesEdit
- Half-Life 2: Raising the Bar (Non-canonical appearance)
- Half-Life 2 (First appearance)
- Half-Life 2: Episode One
- Half-Life 2: Episode Two
|Creatures||Alien Aircraft · Alien Controller · Alien Grunt · Barnacle · Boid · Bullsquid · Chumtoad · Gargantua · Headcrab · Houndeye · Ichthyosaur · Leech · Nihilanth · Protozoan · 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 and X-8973 · Sweepy · Uriah · Victory Mine Vortigaunt · Vortigaunt Camp · Vortigaunt Shepherd|
|Flora and minerals||Crystal · Fungus · Healing Pool · Light Stalk · Trampoline · Tree|
|Weapons||Ceiling Turret · Hivehand · Sentry Cannon · Snark · Snark Mine|
|Technology||Healing Shower · Thumper|
|Creatures (cut)||Archer · Charger · Fast Walker · Flocking Floater · Kingpin · Mr. Friendly · Panther Eye · Sand Barnacle · Snapbug · Stukabat|
|Weapons (cut)||Black Hole Gun|