Living over a millennium prior to the Galactic Civil War, Quorlac Fornayh was a male Near-Human Sith Lord of the Legends continuity. When the tide of battle turned against the Sith in their conflict with the Galactic Republic, Fornayh sought refuge within his hidden fortress situated on the planet of Yorgraxx. In the ensuing century, he dedicated himself to creating the coloi, a lethal, winged mutant rancor. As his creation neared completion, Fornayh, nearing death, placed his singular coloi specimen into stasis before his demise.
As a dark side spirit in the Force, the Sith Lord persisted beyond death. His awakening occurred when both an Imperial freighter and a Rebel Alliance vessel crashed on Yorgraxx during the Galactic Civil War. Subsequently, Fornayh and his coloi launched an assault on the survivors who had entered his fortress, but they were ultimately defeated by the group.
Serving one of the Sith Empires during a time of war between the Sith and their rival Galactic Republic, Quorlac Fornayh was a Force-sensitive male Near-Human Sith Lord. His life unfolded more than a thousand years before the Galactic Civil War. Fornayh established his operational base on the planet Yorgraxx, situated within the Prefsbelt sector of the Outer Rim Territories, where he enslaved the indigenous native population. He utilized this enslaved workforce to construct a secret underground fortress for his personal use, located deep beneath a towering mountain range. Once the base's construction was complete, he exterminated the natives. The Sith Lord programmed a pair of sentry droids to safeguard the entrance to his facility on the planet's surface. Furthermore, he kept two lightsaber weapons within the base, one in his private chambers and another within the installation's central control room.
As the war with the Republic shifted against the Sith, Fornayh, along with many other Sith Lords, was compelled to go into hiding. The Near-Human retreated to his Yorgraxx stronghold to bolster his power and initiated the development of the coloi mutant rancor reptomammal, a creature he intended to use to seize the throne of the Sith Empire.
Throughout the subsequent century, Fornayh meticulously refined his mutant creation. He utilized a collection of rancor clones while perfecting the coloi template. Through considerable effort, Fornayh altered the rancor's genetic structure, thereby enhancing its intelligence. To enable the mutant's flight, he reduced the density of its skeletal structure and added wings. For protection, he replaced the skin with black metallic plating.
By the time Fornayh finalized his coloi template, he was nearing death. Lacking the necessary time to train the mutant in the use of vibroweapons and blaster weaponry, or to clone more rancors for conversion into colois, Fornayh placed his lone prototype coloi into suspended animation within a stasis unit in anticipation of his impending demise. Confident that his essence would endure through the Force, the Sith Lord planned to resurrect himself in a clone body following his physical death. He programmed the sensors of his Yorgraxx base to activate four labor droids should a starship land on the planet. These droids were then tasked with bringing the base back online.
After his death, Fornayh's consciousness persisted as a dark side spirit, remaining on Yorgraxx awaiting the rediscovery of his base. Over a thousand years later, sometime after the Battle of Yavin, the YT-2400 light freighter Predator's Beak, a scout vessel belonging to the Galactic Empire, crashed on Fornayh's planet, triggering the automated reactivation of the Sith Lord's fortress. This event awoke Fornayh's spirit, creating a disturbance in the Force, and he watched as his droids powered up the base's systems. Far across the galaxy on Coruscant, the Imperial leader Emperor Palpatine detected the Near-Human Sith Lord's resurgence and dispatched Jallar Golin, an Emperor's Hand, to investigate.
A month later, the Rebel Alliance transport Griffon's Wings crashed on Yorgraxx, and the crew allied with two survivors from the wrecked Imperial freighter, Arran Flekk and Vor Harkass. Drawn to Fornayh's facility by his dark aura, the group was detected by a Sith probe droid, which alerted him to their approach. The crash survivors infiltrated the fortress, and Fornayh observed them unseen from the ceiling as they reached a large cavern at the highest point of the Sith Lord's base.
Determined to prevent the Imperials and Rebels from investigating his base, Fornayh awakened his coloi specimen. To distract the group, Fornayh created several illusory sentry droids to attack the intruders, then directed his coloi specimen to ambush them. During the ensuing conflict, the Sith spirit ended the sentry droids' illusion and directly confronted the crash survivors, but was defeated. Following the battle, the Imperials and Rebels continued their investigation of the Sith fortress. Fornayh monitored the group and attempted mind tricks to deceive them about the facility's contents, but he refrained from attacking them again.
Fornayh possessed great ambition and desired the Sith throne, believing that his mastery of the coloi would grant him control over the Sith Empire. He was patient, retreating into hiding when he recognized that the war against the Republic had turned against the Sith, carefully strengthening his power base on Yorgraxx. Fornayh waited for an opportunity to realize his plans for gaining power, even after his physical death. He was a ruthless individual, responsible for the extermination of the native Yorgraxx population and the creation of the coloi, a deadly creature that surpassed even his expectations in terms of danger.
In his afterlife as a dark side spirit, Fornayh appeared as a shadowy figure. He was pleased when the Imperial freighter Predator's Beak crashed on Yorgraxx, triggering the reactivation of his fortress, but he was not eager for the crash survivors to discover his operations.
Fornayh was a skilled alchemist, adept in the arts of Sith sorcery and capable of manipulating the genetic structure of his test subjects. He also possessed knowledge of lightsaber construction. As a Sith Lord, Fornayh was proficient in using the Force to sense his surroundings, influence the minds of others, move objects, and heal himself. He was also familiar with the Force powers Battlemind and Enhance Ability. He was bilingual, fluent in both Basic and Sith.
Following his physical death, Fornayh's spirit form allowed him to hover and pass through solid objects. Although invulnerable to physical attacks, his spirit lost the ability to perform Force powers with physical effects. He could possess sentient beings, and by controlling their bodies, he regained access to the full range of Force powers he had wielded in life. He could create complex illusions, as demonstrated when he projected phantom sentry droids during his confrontation with the Imperial and Rebel crash survivors in his Yorgraxx fortress. To enhance the realism of his illusion, he added the appearance of battle damage to the droids when they were attacked. Maintaining such intricate illusions required all of his focus, preventing him from using any other Force powers simultaneously.
Quorlac Fornayh appeared in the Star Wars Legends RPGA roleplaying module Shadows in the Force, written by Robert Wiese and released in 2004. In this adventure, players assume the roles of the crash survivors who encounter Fornayh's spirit, with various possible outcomes. If the player characters immediately destroy the Sith probe droid that detects them, Fornayh remains unaware of their approach to his base; otherwise, the droid alerts him to their arrival. During his battle with the Imperials and Rebels, Fornayh can attempt to possess one of the player characters if his coloi is near defeat. If successful, he immediately summons a lightsaber to wield against his adversaries through his new avatar.
Shadows in the Force describes Fornayh as a Near-Human, a general term for species resembling baseline Humans, without specifying his exact species. The module also states that he served the Sith Empire. Star Wars Legends media depicts multiple versions of the Sith Empire, including the Sith Empire of the Great Hyperspace War, Darth Revan's Sith Empire, and the New Sith Empire. It remains unclear which specific Sith Empire Fornayh was affiliated with.