Darkness

The Darkness is the powerful, ancient enemy of the Traveler, tracking it through the cosmos. Once, the Darkness ruled the universe, and the Hive believe that the Light must be consumed for it to reclaim its domination.

Centuries ago, the Darkness arrived in the Solar System. The event of arrival lasted 0.3 seconds, and the event footprint scattered neutrinos and gravity waves. An AI observing the event was able to derive some information, but was unable to understand its mechanism or fully simulate the event; however, the Darkness as clearly a complex structure acting with clear purpose. It concluded that the event not only defied all known laws of physics to the point of acausality, it was also directed, angry, and almost certain to reach the solar system in a short amount of time. An issued Skyshock alert was upgraded to OCP:EXTINCTION, and a number of defensive protocols were added.

The Darkness nonetheless swept through the Solar System, devastating human civilization in an event called the Collapse. Only due to the Traveler's intervention did humanity survive. Seven centuries later, the Darkness was set to return. The Fallen, Vex, Hive, and Cabal are linked to this force. Hive Wizards call upon the Darkness for their powers.

Trivia

 * The Darkness bears resemblance to the Armies of the Dark and its leader in Bungie's Myth series&mdash;a resurgent dark force that is the antithesis to the (forces of) Light.
 * The Darkness being flagged as Acausal indicates that it has no cause-effect relationship, but may be acting on an effect-then-cause relationship, or that its being directed by future inputs.

List of appearances

 * Destiny