Class	Abilities	Cooldown
Zombie Scout	Speed Demon Passive: 75% faster movement speed (520 Hu/s) and 25% extra jump height.^[1] Passive: Triple jump.^[2] Passive: 50 less max health (75 total max health).^[3]	N/A
Zombie Soldier	Pounce Ability: Leap into the air, in the direction the player is looking. Landing on a player's head results in a stomp similar to the Mantreads. This leap counts as blast jumping.^[4] Passive: 25 extra max health (225 total max health).^[3]	5 seconds^[5]
Zombie Pyro	Hellspawn Passive: Immunity to all flames and liquids, explodes into a Gas Passer cloud and explode into flames when killed.^[6] Passive: Every hit ignites Humans for a total of 3 seconds, dealing 8 damage per second.^[7] Passive: On death, no health kit is dropped. Passive: +25 extra max health (200 total max health). Passive: 30% damage penalty.^[8]	N/A
Zombie Demoman	Blast Charge Ability: Explosive Charge, similar to the Charge when wearing a shield, dealing 275 damage in a 150 Hammer unit radius.^[9] Passive: 25 extra max health (200 total max health).^[3]	6 seconds^[5]
Zombie Heavy	The Tank Passive: Deals 220% damage, immune to knockback and critical hits,^[8] 35% damage resistance, 50% resistance to Sentry Gun damage, and increased knockback dealt.^[10] Passive: Instantly destroy buildings in a single hit.^[3] Passive: 300 extra max health (600 total max health)^[3] Passive: 10% slower move speed (207 Hu/s).^[3]	N/A
Zombie Engineer	EMP Grenade Ability: Throw an EMP bomb, temporarily disabling any buildings for 6.5 seconds and doing 110 damage after 3.5 seconds in a 500 Hammer units radius.^[11] Passive: If an Engineer dies with an unused EMP grenade, he drops a medium ammo pack.^[12] EMP explosion shakes the screen of players near it.^[11] Passive: 25 extra max health (150 total max health).^[3]	10 seconds^[5]
Zombie Medic	Heal Ability: Heals and ÜberCharges himself and teammates in a 275 Hammer units radius around him. The healing and ÜberCharge effect is identical to the Overheal magic spell.^[13]^[14] Forces the player into a third person perspective when used, but still allows attacking, even during the ÜberCharge. Passive: 25 extra max health (175 total max health).^[3]	7 seconds^[5]
Zombie Sniper	Spit Ability: Spit an acid ball that, when it lands, damages any Human that walks on it. The initial acid ball hit deals 45 damage and the acid pool deals 25 damage per tick (50 damage per second) and stays for 5 seconds. The acid pool has a 130 Hammer unit radius^[15]. The acid ball can be held for a maximum of 5 seconds.^[15] Passive: Drop a pool of acid on death. Passive: 25 extra max health (150 total max health).^[3]	5 seconds^[5]
Zombie Spy	Reveal Ability: Mark Humans in a radius around him, revealing their location with an outline. It has a radius 1000 Hammer units and reveals Humans for 20 seconds.^[16] Passive: Automatically cloak, attacking or using Reveal uncloaks the Zombie Spy for 3 seconds. Passive: 10 extra max health (135 total max health).^[3]	10 seconds^[5]