Ether is a white, gaseous substance that Fallen depend on to survive, and which only Servitors can currently produce. Ether Seeds may be processed Ether for later usage or storage, and Ether Drops are ether remnants.
Ether is apparently both a gas and a liquid, processed from energy and matter (organic compounds, in one known case) by Servitors through an unknown process. It is absorbed through breathing , and appears to run through Fallen bodies like blood. It can be even consumed by other beings as well. It is hypothesized to be an "ethereal lifeblood" for the Fallen but not a "soul" as is commonly assumed. When there is enough in quality it fills an Eliksni with strength. It is also cold. Ether was once freely available on the Eliksni homeworld but is now strictly rationed according to rank. Kells hold a device called The Elder Cipher, which controls how much ether is distributed from Servitors; Archons and Barons get an exceedingly large portion while Dregs get only enough to stay alive. This rationing stunts the potential strength and size of contemporary Fallen, particularly the lower ranks.
Ether is poisonous to Hive and possibly humans as well from what Failsafe said on Nessus. Although for the former, it is possible for hive to grow tolerant of Ether through breeding processes, as a Knight possessed Ether inside him.
During the Red War, the Fallen House of Dusk was able to utilize stolen Cabal technology and the Servitor Serkuleks, the Fount to create a modified, more effective form of Ether known as "Enhanced Ether". Those who took this Ether substance would become Empyrean Fallen, exhibiting several effects including increased strength and health, and the side-effect of glowing like Servitors. Raksil, Archon Priest would head this operation before being killed. The project would later be put to a complete end following the destruction of Serkuleks at the Guardian's hands.
The Scorn thrive off of Dark Ether, a disturbing, corrupted form of Ether derived from remnants of the Darkness afflicted within Uldren Sov from his experience during the Battle of Saturn. After wishing to save a dying Fikrul, which is fulfilled by the Ahamkara Riven, some of the Darkness within Uldren was transferred into Fikrul's lingering Ether, bringing the disgraced Fallen back from death and creating Dark Ether.
Dark Ether is capable of resurrecting dead Fallen at the cost of severely mutating them, such as how the Screeb units of the Scorn have been warped into quadrupedal Thrall-like monstrosities. It lingers instead of dissipating like normal Ether and is described by Variks as a fog-like gas that you move through like water, heavy and opaque.
List of appearances