Armor: Heavy
Hit Points: 200
Ground Attack: 0
Air Attack: 0
Attack Range: 0
Gas Required: 0
Minerals Required: 100

The Overlord serves three purposes for the Zerg: First, it's the equivalent of Terran Supply Depots or Protoss Pylons, and how many you need depends on how large the Zerg force is. Second, the Overlord is the Zerg Shuttle. To transport units by air, you must research Transport for your Overlords (which can be done in a Lair). The Overlord is also a detection unit, which allows sighing of cloaked units!

Obviously, transporting units with an Overlord is risky. However, if you take the proper precautions, it needn't be stress-including. First, protect your Overlords with Mutalisks and Scourge. Second, don't move your Overlords into areas that have lots of anti-air resistance. Third, upgrade your Overlord Sight and Speed in the Lair/Hive. Speed is especially important, because the upgrade doubles the lumbering Overlord's rate of movement.

Type: Airborne Commander Heavy Transport (advanced strains)
Core Genus: Gargantis Proximae
Primary Attack: None; may house other breeds

The semi-intelligent, space-faring behemoths known as the Gargantis Proximae were inducted into the Swarm so theat their heightened senses could benefit Zerg warriors in battle. The Gargantis flyers were assimilated into the Swarm so well that the Cerebrates use them to maintain control over their forces. Overlords keep the warriors of the swarm ordered and coordinated during battle, and with their enhanced senses they often serve as advanced scouts. They have the innate ability to sense any hidden enemy units, including those under the effects of cloaking systems or distortion fields.

In addition to commanding troops against their enemies, the Overlords have the responsibility of transporting Zerg warriors within the hollows of their reinforced carapace hides. This particular breed of Overlord can only be bred from a Lair or Hive after being genetically enhanced with the Ventral Sacs.