The elongated appendages hanging from the creature’s underbelly have evolved into an array of microscopic filaments that gather sensory and spatial information through intermittent pulses, which is then fed directly into the Overlord’s nervous system. All data is processed as fast as it is received, allowing these gargantuan fliers to navigate through any environment and relay important tactical data to the Swarm.
The thick outer shell of the Gargantis Proximae
has changed little, even after Swarm assimilation. As spacefaring creatures, Overlords possess a carapace that pressurizes and seals whenever it cruises through the vacuum. Two species of unidentified, symbiotic organisms seem to help regulate these functions, but our scientists have been unable to obtain any living samples—they die in seconds if removed from the host.
Overlords are capable of generating helium through an efficient “respiratory” system distributed along the carapace. The excess helium is stored in thick sacs that contract or expand through rudimentary pulses, allowing the creature to regulate altitude and propulsion at will.
One of the more unique traits of the Overlords is the ability to liquefy their own internal organs to produce creep, which is then stored in multiple glands near their heads. The process is instantaneous, and also takes place when space is needed for the transportation of Zerg land-based creatures. Overlords are not only able to regrow their organs at will, they can also modify them to adapt, and derive sustenance from inhospitable environments.
The Overlord’s large, bulbous brain—safely stored under a heavily armored weave of bone and cartilage—is a rather large organ with millions of nerves and synaptic contacts. The vast network of nerve nodes extends in all directions throughout the creature, but is more heavily concentrated on the lower section and the legs. Overlords depend on this intricate system to relay commands and tactical data to the Zerg.