Drone

While their combat uses are relatively limited, Probes are essential, as they are the only Zerg units that can gather minerals and Vespene Gas, which are required for any constructions. They mutate into all Zerg buildings.

Damage: 5
Armor: 0
Hit Points: 40
Upgrades: Armor: Factor of 1, Weapons: Factor of 1

• Burrow: The ability to burrow into the ground when under attack allowing them to remain concealed from enemies while allowing regeneration or until reinforcements arrive.

Zergling

While the weakest of the light infantry units in the game, the Zerglings, nevertheless, have the advantage of numbers: two separate Zerglings come from one egg, and, properly upgraded, the can have a dangerous blend of speed, weight of numbers, and damage capability.

Damage: 5
Armor: 0
Hit Points: 35
Upgrades: Armor: Factor of 1, Weapons: Factor of 1

• Burrow: The ability to burrow into the ground when under attack allowing them to remain concealed from enemies while allowing regeneration or until reinforcements arrive.

Hydralisk

The spindly, snake-like Hydralisks house hundreds of armor piercing spines at there enemies approaching from ground or air attack.

Damage: 10
Armor: 0
Hit Points: 80
Upgrades: Armor: Factor of 1, Weapons: Factor of 1

• Burrow: The ability to burrow into the ground when under attack allowing them to remain concealed from enemies while allowing regeneration or until reinforcements arrive.

Defiler

The toxic assault troops of the Zerg Swarms, these are the perfect example of the sadistic nature of the Zerg. The Defiler uses genetic matrices to produce cancer like toxins, have an impressive bag of corrosive tricks: a well aimed dose of Plague has been known to cripple even the powerful Terran Battle Cruiser.

Damage: 8
Armor: 0
Hit Points: 80
Energy: 200
Upgrades: Armor: Factor of 1, Weapons: Factor of 1

• Burrow: The ability to burrow into the ground when under attack allowing them to remain concealed from enemies while allowing regeneration or until reinforcements arrive.
• Dark Swarm: Launching a number of parasites at its enemy creating a thick cloud of living insects providing a cover for other breeds.
• Plague: Produces a batch of corrosive spores creating a toxic cloud harming all caught within its midst.
• Consume: Ability to feed off its own species to regain lost energy.