Fallen

"We have butchers at our gates, four-armed and eager for slaughter."

- Fallen Grimoire entry

The Fallen are an alien species that fights against the remnants of the human race.

Overview
The Fallen are a nomadic race of pirates who were once part of noble houses. This is evidenced by the banners and flags they still fly even after their fall from nobility. The Fallen search the stars for artifacts of their lost civilization. They first arrived in the solar system after the Collapse, arriving in their massive Ketches to loot and pillage humanity's former worlds, leaving grief and wreckage in their wake.

The Fallen Houses have apparently laid claim to all worlds and territories once owned by humanity, and fight the remnants of the human race, and possibly one another, for dominion over these places.

Biology
Fallen have 2 pairs of arms and typically wear a helmet with what appears to be respirator devices. Through means either natural or artificial, the Fallen can regrow their arms if removed from their body. Their blood color is red. When killed, a Fallen's "soul" escapes it. They are a hardy species, and can survive in a wide range of environments without heavy armor or complex modifications to their physiology. They travel light, hit hard, and are gone before their enemies know it.

Fallen depend on ether to survive, which the servitors provide for them.

Noble Houses
Fallen society is divided into a number of Noble Houses, none of which are known to maintain friendly relations with one another. Each of these houses is led by a Kell, who claim to be royalty. Kells act as the political leaders of each house, while their Prime Servitors act as the religious leaders, served and protected by an Archon. Houses need all three to be fully stable; infighting is common if a house loses its Kell, and a house without a Prime Servitor cannot produce new servitors.

Known Houses

 * House of Devils - Old Russia
 * House of Exile - The Moon
 * House of Kings - Old Russia
 * House of Winter - Venus
 * House of Wolves - The Reef

Command Structure

 * Kell
 * Archon
 * Baron
 * Captain
 * Elder Captain
 * Noble Captain
 * Reaver Captain
 * Vandal
 * Elder Vandal
 * Kell`s Guard
 * Reaver Vandal
 * Stealth Vandal
 * Stealth Elite Vandal
 * Dreg
 * Feral Dreg

Named Individuals and Mini-bosses

 * Aksor, Archon Priest
 * Draksis, Winter Kell
 * Elyksis, Wolf Rebel
 * Ether Runner
 * Frigoris, Exiled Baron
 * Grayliks, Winter Baron
 * Karrhis, Archon Rising
 * Loksis, Devil Claw
 * Naksis, Devil Baron
 * Rahn, Devil Captain
 * Riksis, Devil Archon
 * Sepiks Prime
 * Simiks-3

Armament

 * Shock Blade
 * Shock Dagger
 * Shock Pistol
 * Shock Rifle
 * Shock Grenade
 * Wire Rifle
 * Shrapnel Launcher

Vehicles

 * Fallen Walker
 * Elite Devil Walker
 * Noble Devil Walker
 * Noble Iron Walker
 * Noble Winter Walker
 * Fallen Skiff
 * Ketch
 * Pike

Robots

 * Servitor
 * Elder Servitor
 * Spy Servitor
 * Trawl Servitor
 * High Servitor
 * Prime Servitor
 * Shank
 * Elite Shank
 * Noble Shank
 * Noble Pit Shank
 * Reaver Shank

Other

 * Glimmer Drill
 * Mesh generator

Alphabet
In addition to Fallen glyphs, Bungie has released a number of images with examples of Fallen writing, including a number of unique letter combinations.

Trivia

 * Their mechanized vehicle units carry overtones of Japanese mecha, and their ships appear like rusted futuristic submarines.
 * The Fallen have been seen to cooperate with both Cabal and Vex forces, who are in fact enemies with one another as seen on Mars. This suggests that different groups of Fallen will often take different sides in a given war.

List of appearances

 * The Law Of The Jungle
 * Destiny
 * House of Wolves