The Poison Zombie is the result 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.

Tier: 9-A

Classification: Zombie

Powers and Abilities: Superhuman physical characteristics, immorality (Type 2), poison manipulation (the headcrabs it carries can inflict poison damage)

Attack Potency: Small Building level (Its attack is comparable to the Standard Zombie)

Speed: Below Average Human with possible Subsonic+ reactions (Comparable to the Standard Zombie)

Lifting Strength: At least Average Human, likely higher (Should be stronger than the Standard Zombie)

Striking Strength: Small Building level

Durability: At least Small Building level (Is significantly more durable than the Standard Zombie)

Stamina: Unknown

Range: Standard Melee Range, Extended melee range by throwing poisonous headcrabs

Standard Equipment: Poisonous headcrabs

Intelligence: Animalistic (Not much stronger than the Standard Zombie)

Weakness: Fire will cause it to panic before burning to death and will kill the headcrabs on its back, explosives can kill it quite easily.