Nightmare

"The Nightmares appear to be extracted from our very psyche—violent manifestations that wreak havoc, tormenting us with our past trauma. They tease us with a life we once knew, prying into our minds and attacking our most vulnerable points. This assault on our emotions is aimed to weaken us and our sense of purpose."

- Eris Morn.

Nightmares are apparitions of Darkness created by the Pyramids for psychological warfare; manifested as past figures and enemies to exploit the trauma and worst fears of Guardians and other beings. First appearing following the discovery of the Pyramid on Luna, the Nightmares include phantoms of some of Guardians' deadliest foes, including Crota, Fikrul and Ghaul.

Overview
According to Hashladûn, Nightmares are described as the malleable creations of the Pyramid, as they are not alive but made of chaos, negation, and the raw things found existing in spaces between thought and fear. Nightmares appear to be extracted from the psyche as violent manifestations that wreak havoc with grief and trauma. They are also known to induce major psychosis among its victims, most notably the crew of the K1 project after they were exposed to an artifact from the Darkness.

Nightmares usually takes the form of a miasma of crimson reddish-black Darkness that extrudes shimmering tendrils radiating away at its core; often appearing as previous enemies of humanity in corporeal form or former past allies; both which associated with painful or traumatic memories. Eris surmised that the true purpose of the Nightmares is a tool to manipulate and exploit Guardians at their weakest; for the explicit temptation towards the Pyramids and their promises of power.

The Nightmares are found primarily near and in the Scarlet Keep citadel, which was built in close proximity towards the Pyramid. Beyond the Moon, Nightmares had propagated on other celestial bodies, roosting in Lost Sectors as its previous enemy tenants.

Gameplay
Nightmares are Minor, Elite, Major, and Ultra enemies that debuted in Shadowkeep and are primarily encountered in Lost Sectors and during endgame activities like Nightmare Hunts and Altars of Sorrow on the Moon. They drop phantasmal orbs upon death that grants players an Unstable Essence damage buff on all other Nightmare enemies for ten seconds. Nightmare bosses are often accompanied by two Major mob enemies that can respawn if destroyed, most often when boss health reaches halfway and if there are no current Nightmare enemies standing then.

Ultra-tier Nightmares, especially the ones found in Nightmare Hunts, have an additional mechanic that renders them intangible with immunity to damage in an reddish-black ethereal form after they spawn mobs; forcing players to clear them first to initiate the next damage phase.

Nightmares have an chance of dropping Phantasmal Fragments and even rarer Phantasmal Cores as a resource to craft weapons and Dreambane Armor at the Lectern of Enchantment, which are unlocked from Nightmare Essence quests (which can drop from bosses during Nightmare Hunts). Even certain armor mods equipped to Dreambane armor are effective in both warding and boosting damage against Nightmare enemies.

Major Nightmares

 * Nightmare of Crota, Son of Oryx - Aspect of Despair
 * Nightmare of Dominus Ghaul - Aspect of Rage
 * Nightmare of Fikrul, the Fanatic - Aspect of Insanity
 * Nightmare of Omnigul, Will of Crota - Aspect of Anguish
 * Nightmare of Phogoth, the Untamed - Aspect of Fear
 * Nightmare of Skolas, Kell of Kells - Aspect of Pride
 * Nightmare of Taniks, the Scarred - Aspect of Isolation
 * Nightmare of Zydron, Gate Lord - Aspect of Servitude

Minor Nightmares

 * Nightmare of Arguth, the Tormented
 * Nightmare of Gothrax, Swarm Protector
 * Nightmare of Horkis, Fear of Mithrax
 * Nightmare of Jaxx, Claw of Xivu Arath
 * Nightmare of Kelnix Reborn
 * Nightmare of Lambiks-4
 * Nightmare of Loronvis, Council Hand
 * Nightmare Reaver Vandal
 * Nightmare of Reyiks, Actuator
 * Nightmare of Rizaahn, the Lost
 * Nightmare of Rovikis, Council Hand
 * Nightmare of Seresis, Council Hand
 * Nightmare Servant of Ir Yût
 * Nightmare of Talgoth, Soul Smasher
 * Nightmare of Val Sinu, Hellbringer
 * Nightmare of Volniks, Deathkeeper
 * Nightmare of Xortal, Sworn of Crota

Fallen

 * Nightmare Shank
 * Nightmare Dreg
 * Nightmare Wretch

Hive

 * Nightmare Thrall
 * Nightmare Acolyte
 * Nightmare Wizard
 * Nightmare Ogre
 * Swordbearer Nightmare
 * Tormented Servant Nightmare

Cabal

 * Nightmare War Beast
 * Nightmare Legionary

Scorn

 * Nightmare Stalker

Vex

 * Nightmare Goblin
 * Nightmare Harpy

List of Appearances

 * Destiny 2
 * Shadowkeep

Trivia

 * In a few bounties when the Haunted Forest was created, it is implied that the Vex are capable of creating Nightmares of their very own that prey on our greatest fears, Ikora even asked if they would create shades of ourselves.