Yinchorri The Yinchorri , or Yinchori , were a species of sentient , corpulent , turtle - like , green - skinned reptilians with an inherent immunity to telepathic uses of the Force , including mind tricks . They were born from eggs and had a great endurance when facing pain or heat . Native to the planet Yinchorr , the Yinchorri were divided into two castes : the Intelligentsia , who governed through the Council of Elders of each city - state , and a highly aggressive warrior caste . They were also known to value family ties . They had strong willpower that allowed them to resist attempts by slavers to enslave them . They also had the skill to develop specialized technology . However , they were poor strategists . Yinchorri culture was best characterized by the expression , " might makes right " ; they considered anything they were able to take and hold by force to be rightfully theirs — anything they disliked was to be destroyed . They were commonly found as pirates , mercenaries or in other violent jobs . During the time of the Galactic Republic , the Yinchorri joined the galactic community but , being a potential threat , they were not provided with starships . Secretly motivated by Darth Sidious through his minion Vilmarh " Villie " Grahrk , they unleashed a pan - galactic uprising that was only stopped when the Jedi Order became involved . Afterward , an embargo was placed on their homeworld . That was Sidious ' plan . He had felt that both the Force - resistant Yinchorri and the Jedi could become a menace to his plan ; by fighting each other , both sides would be weakened as a result . Later , the Galactic Empire took control of the Yinchorri system . Local Imperial Governor Marcellin Wessel betrayed the Yinchorri , killing their elders in a failed scheme to capture Princess Leia Organa . Enraged , the Yinchorri rebelled against the Empire . The galactic government answered their uprising by destroying the reptilians ' civilization . Although the New Republic later helped the surviving Yinchorri retake control of their planet , the species refused to join another galactic government . Their planet eventually came within the area of control of the Empire of Darth Krayt . Biology and appearance . The Yinchorri , also known as Yinchori , were sentient , reptilian humanoids with sturdy constitutions . Members of the species were turtle - like in several respects , such as the head ; however , they were anthropomorphic with regard to limb position . Although they were born in clutches from eggs , women showed natural breasts . There were no other appreciable differences between male and female Yinchorri . The Yinchorri body was covered by thick skin , which was dark green or brown in color . Adult Yinchorri could attain a height between 2 . 4 to 2 . 7 meters . They had greater endurance than Humans , allowing them to withstand pain , and they were more resistant to heat because of their cold blood . They started adolescence at eight years of age and were considered biologically mature at 15 . The first ill effects of age appeared at 41 years of age , with seniority being reached at 60 , which was 20 years before the end of their life expectancy . The species was divided into two breeds : The Intelligentsia , who performed governing tasks , and the warrior caste , who were known to use violence in response to threats . No matter the breed , all the Yinchorri had a natural resistance to the mind - controlling uses of the Force , due to an adaptation of their Midi - chlorians — microscopic , symbiotic life forms that resided inside the cells of all living things — which caused the symbionts to generate Force - devoid bubbles around their hosts . The Sith Lord Darth Plagueis believed that the Yinchorri had evolved their Force resistance as a response to a past threat to their survival , and he suspected that the species were naturally strong in the Force . However , that resistance did not extend to those Force powers that did not directly affect the will of the target , such as telekinesis . A small percentage of the Yinchorri could also manipulate the Force . Society and culture . Culture . The Yinchorri were known for their strength of character and utilitarianism . Covetous and domineering , they considered themselves worthy of anything that came within their clutches — provided they could keep it from others — using the expression , " might makes right " as their motto and moral authorization . Those things that they disliked or had no need for were destroyed . Due to a lack of neural pathways in the Yinchorri forebrain , members of the species had an instinctive disposition towards violence that rendered them unruly and unpredictable . Yinchorri only became fiercer and more obstinate when confronted by opponents ; should such rivals prove a threat to Yinchorri or their loved ones , the reptilians ' demeanor could explode into physical violence — although direct threats were not always necessary to inflame a Yinchorri ' s temper to the point of physical confrontation . The Yinchorri lived in city - states on the planet Yinchorr . Each community had its own military and its own rulers . Most city - states were ruled by a Council of Elders headed by a single leader . Thus , the Yinchorri had no planet - wide ruler . The Council was highly respected by the Yinchorri . Each city - state also had smaller communities around it providing the city - state with resources such as minerals and farmed food ; the number of those settlements was used to measure the polity ' s influence . The Yinchorri were inept strategists and easily tricked by manipulative individuals who preyed on their naïveté . As such , they were led by the Sith Lord Darth Sidious and his minions not only to rise up against the Galactic Republic , but also to make tactical moves that damned their own war effort . During the years of the Galactic Civil War , agents of the Galactic Empire made good use of the Yinchorri gullibility by betraying them after tricking a Yinchorri commander and his pilot . Those Yinchorri brought Leia Organa to Yinchorr , following Imperial orders , and then were promptly killed by the Empire before the Yinchorri could understand the reasons behind the Empire ' s reversal . Social structure . To the Yinchorri , social structure was a natural part of their existence , as each Yinchorri was always part of several communities : First the childhood family , then the city - state where they grew up , then the work environment , and finally the new family they formed with a mate . Yinchorri particularly valued the institution of marriage , and the species mated for life . In some cases , a widow or widower suffered so much that she or he might die of sorrow only days after the mate ' s death . Marriages were frequently arranged by the parents of the couple to increase the power of the family ; polygyny , the form of polygamy in which a male had several wives , was not unheard of . Neither was marriage among a Yinchorri and a non - Yinchorri alien . Yinchorri were known to distrust aliens as they were not born among their clans , but this taboo could be broken through inter - species marriage . For example , in 33 BBY , the daughters of several Yinchorri Elders married the same Devaronian for political reasons . From that point on , the Yinchorri Elders considered that Devaronian and his family to be a part of their own families . Technology . The Yinchorri developed technology adapted to their own needs and environment . An example was the Yinchorri flutter - pack , a backpack with four insect - like wings whose fluttering allowed the user to fly for one hour . The device was capable of carrying a cargo of 200 kilograms ; its flight ceiling was 1 , 000 meters . The user , commonly a Yinchorri , utilized a gauntlet to control speed and direction , with a hand - held weapon in the free hand . Those devices were often worn in conjunction with protective goggles . Upon draining of its power , the flutter - pack had to be re - charged for eight hours before it could be re - used . Language . The Yinchorri had their own language , also known as Yinchorri , which was used to christen native fauna such as the rolk - mangir . Many Yinchorri learned to speak Galactic Basic Standard as a second language , but few learned to read it . Yinchorri tended to use one - word names . Some examples were names like Denrak , Emterrk , Jetar , Merzok , Qayayir , Solhek and Varuk . History . The Yinchorri evolved on a rocky , desert world known as Yinchorr , located in the Expansion Region . Their thick skin evolved as a means of protection against the arid environment of their homeworld . Yinchorr had little in the way of natural resources . It was , however , rich in predators , including the rolk - mangir . The Yinchorri eventually organized themselves into rival city - states . In the most ancient epochs of Yinchorr ' s history , Tol - Kachorn was the strongest of these , with almost one hundred small communities providing it with resources and five lesser city - states serving as its satellites . Several other polities tried to challenge the supremacy of Tol - Kachorn , confrontations that sparked wars of conquest that always ended in the defeat of the contender — and the reign of chaos . During the years following the end of the New Sith Wars , the Yinchorri species was mentioned in the Jedi training manual " " , in an entry on Force - resistant aliens that was written by the Jedi Master and biologist Bowspritz . Circa 500 BBY , Yinchorr was charted by the Galactic Republic . Alien scouts decided that the Yinchorri were too underdeveloped to be useful to the Republic , and the planet was deemed too deficient in resources to be useful for a settlement . On the scouts ' advisement , the Republic disregarded the world and the Republic refused to admit Yinchorr as a member , despite the desire of the Yinchorri to become part of the pan - galactic democracy . In 67 BBY , the Yinchorri Council of Elders sent a delegation led by Qayhuk , the Council ' s secretary , to a meeting of some of the galaxy ' s most influential beings on the moon Sojourn , to request that the Muun power broker Hego Damask lobby the Republic on their behalf . Damask , the public persona of Darth Plagueis , had heard rumors of the alleged Force resistance of the Yinchorri and he attempted to perform a mind trick on Qayhuk . Impressed by the secretary ' s immunity to Force - based influence , Damask agreed that his company , Damask Holdings , would exert pressure on the Republic to give the Yinchorri a seat in the Galactic Senate . Around 58 BBY , the Yinchorri joined the galactic community , but most planetary representatives assumed that the species would go unnoticed in the grand scheme of galaxy - wide politics . The Yinchorri officially became members of the Republic the following year as a result of Damask Holdings ' influence , and they were eventually given representation in the Galactic Senate . On attaining their seat in the Senate , the Yinchorri Council of Elders provided Damask with a convicted Yinchorri murderer as a gift , and he experimented on the criminal to learn more about the innate resistance of the Yinchorri to Force - based suggestion . After two years of study , Plagueis discovered a way by which he could bypass the convict ' s Force immunity and compel the murderer to become placid . The Muun developed plans to assemble an army of Yinchorri to wage war against the Jedi Order , so he traveled to the planet Kamino to discuss with the Kaminoan cloners the possibility of creating a force of obedient , cloned Yinchorri soldiers . However , the Kaminoan scientist Ko Sai expressed doubts that compliance could be bred into the Yinchorri without compromising their violent tendencies . Despite her concerns , Plagueis decided to press ahead with the development of the army and provided the Kaminoans with the Yinchorri convict . After repeated attempts , all efforts to successfully clone the Yinchorri failed . The Yinchorri were introduced to interstellar travel through means that , according to rumor , involved stolen technology . The species began to work offworld in violent occupations , making good use of their natural drive . They soon adapted to the galaxy and developed a love for the latest military technology , including starships . Even then , few Yinchorri felt the need to settle in other , less inhospitable systems . Those who did so had to take with them all of their relatives and their relatives ' families , which usually meant the relocation of an entire town or city - state . The Yinchorri colonized three other planets in the Yinchorri system : Yitheeth , which had only seven percent of the surface covered in land and was otherwise a shallow sea ; Yibikkoror , characterized by its dense atmosphere ; and Uhanayih , a rock with no life except for the settlers . The word " Uhanayih " was related to myths and legends about living in the " spiritual world . " The galaxy however , understanding that the Yinchorri were aggressive , restricted the sale of starships to the species . The Human Jedi Master Tharence Wo researched the Yinchorri and wrote detailed reports for the use of future Jedi . Wo mistakenly believed that Uhanayih was a mythical place instead of a real colony . Slavers raided the planet Yinchorr , trying to capture and sell the locals . They discovered that Yinchorri groups were more likely to fight to their deaths than face the fate of slaves ; even those uncooperative Yinchorri that were captured preferred to be executed or starve to death than obey a new master . Eventually , slavers realized that the spirit of resistance was embedded in the species ' social structure ; such traffickers subsequently avoided Yinchorr ' s population . Preparing an Uprising . During the last years of the Old Republic , Plagueis ' apprentice Darth Sidious concluded that the Yinchorri were a threat to his plans of galactic domination due to their stubbornness and resistance to Force mind tricks . Following the failure of Plagueis ' plan to clone the Yinchorri , Plagueis and Sidious hoped to engineer a crisis to test whether the Yinchorri could be fashioned into an effective anti - Jedi army . However , Sidious was also threatened by Supreme Chancellor Finis Valorum and the Jedi Order , and after realizing the futility of forging the Yinchorri into a controllable fighting force , he decided to manipulate the Yinchorri so that they became an apparent hazard to the Galactic Republic . The Sith wanted the Yinchorri to attack and wage a war against the Jedi , hoping that such a conflict would weaken all his enemies and destroy some of them . Sidious also hoped to use the Yinchorri to test Valorum ' s ability to handle a crisis . Needing an agent to interact with the Yinchorri without being discovered himself , Sidious recruited the Devaronian smuggler , Vilmarh " Villie " Grahrk , passing on to him a timetable along with whatever resources the Devaronian needed , but not telling Grahrk about his motives . Grahrk was sent to Yinchorr with advanced combat technology with which he defeated the Yinchorri guards . Having impressed the Yinchorri , he was granted an audience with five important Yinchorri leaders , including Jorek , Kardek and Sothek . Grahrk convinced the Yinchorri that they could increase their prominence in the galaxy by stealing several ships from the nearby shadowport Golden Nyss Shipyards , with Grahrk ' s help , as the Yinchorri were unable to pilot a starship at that point . Grahrk promised that the Republic would not respond with a military attack . One of the Yinchorri leaders refused to trust Grahrk , as he was a stranger , and so Kardek offered to sponsor Grahrk by marrying his daughter Vooma to the Devaronian , prompting the other leaders to similarly offer their own daughters . Physically disliking Yinchorri women , Grahrk offered his son for the marriage in order to gain time . However , he did not have a child of his own and so Grahrk pretended that his nephew Olmar was his son and offered him to the Yinchorri . Grahrk made a deal with Olmar ' s father Holmar , offering him a part of the loot in exchange for Holmar ' s and Olmar ' s help . Ferried by Vilmarh Grahrk , the Yinchorri attacked the shadowport , stole the ships there and blew up the shipyard . Grahrk reprimanded the Yinchorri for that final move but the Yinchorri , not intimidated , felt that their duty was to destroy whatever they did not need . The loot from the attack became the core of the Yinchorri ' s arsenal during the ensuing uprising . Over the next few years , the Yinchorri learned how to pilot their attack ships and starfighters . — the latter of which included other technology stolen from twelve systems . They were also provided with armor made of cortosis , a material resistant to Jedi lightsabers . The Yinchorri Uprising . The Yinchorri withdrew their representatives from the Galactic Senate and began an attack on several planets near Yinchorr , satisfying their aggressive urges . Pushed by Sidious , Vilmarh Grahrk incited the Yinchorri to increase their assault . The Yinchorri then defeated a mining colony of Immalia n Humans on the moon of Mayvitch 7 . One of the Immalians contacted the Jedi Temple on Coruscant and warned them of the danger the reptiles posed , bringing the matter to the attention of the Jedi Order . Having met with Supreme Chancellor Valorum , Jedi Master Mace Windu sent two Jedi , Naeshahn and her Padawan , Ebor Taulk , to deal with the Yinchorri . Unfamiliar with the Yinchorri ' s strengths , both Jedi were killed and mutilated by the Yinchorri , who then sent their bodies to Valorum ' s office with the help of Sidious ' aides Kinman Doriana and Sate Pestage . After that event , the Jedi decided to invest in intelligence and learned about the Yinchorri use of cortosis , their unusual physiology , and the rumored existence of the species ' main command center . The Yinchorri , indeed , had built such a center , hidden on Uhanayih , as the leaders of the uprising correctly believed it would be difficult to discover . Windu traveled to Yinchorr himself with several other Jedi : Three unarmed " Consular " - class space cruisers , each with a Jedi team , would be sent to the Yinchorri system ; that provided each team to search one inhabited planet in the system for the command center . Windu ' s team was sent to Yinchorr , Adi Gallia ' s to Yitheet , and Micah Giiett ' s to Yibikkoror . Yoda and other Jedi remained on Coruscant looking for new information . The three cruisers were attacked by Yinchorri as soon as they arrived in the Yinchorri system , but the Jedi were able to escape . Sidious sent several Yinchorri to infiltrate the Jedi Temple of Coruscant and make use of the absence of the most powerful Jedi to kill Jedi children . Strategically , that was an unwise move for the Yinchorri , as it reduced their strength while gaining them nothing of significant value . The Yinchorri believed they would find the Jedi flat - footed , but Grand Master Yoda had felt the danger through the Force . As a result , the Jedi were prepared . The Yinchorri commandos knocked down the lone Jedi watchman , Jude Rozess , before being met by a Jedi force led by Yoda . The Yinchorri put up resistance , and killed both the Jedi Rozess and Tieren Nie - Tan , but were defeated . The soldiers were questioned , but they knew nothing important . Jedi Masters Yoda and Oppo Rancisis understood then that a third party was manipulating the Yinchorri , and that the Galactic Senate would immediately approve punitive measures against them after that attack ; Sidious ' s political influence , however , delayed that measure . Defeated by the Jedi . Adi Gallia ' s team visited the only permanent settlement on Yitheeth , and were attacked by Yinchorri commanded by Olmar Grahrk . Grahrk was captured and questioned , but he did not know that the command center was on Uhanayih . The Jedi then suspected that the Devaronians were the party manipulating the Yinchorri . The Yibikkoror team , meanwhile , was having more trouble , constantly being attacked by Yinchorri infantry and light air forces . Eventually , they were rescued . As the command center had not been found on Yitheeth or Yibikkoror , Gallia ' s and Giiett ' s teams joined Windu ' s squad on Yinchorr . Jedi scouts Qui - Gon Jinn and Obi - Wan Kenobi confirmed , however , that there was no command center on the planet , only a staging area . The Yinchorri destroyed the Jedi cruiser and harassed the Jedi with flutter - packs and customized tanks . The other Jedi arrived in time to reinforce Windu in a battle that took the lives of three Jedi and many Yinchorri . Masters Windu and Yaddle soon discovered that the command center was on Uhanayih . When they reported that fact to Valorum , the Chancellor used the information and all of his influence to pass the Yinchorri embargo act , an official sanction against Yinchorr . Valorum also sent four navy attack groups of the Judicial Forces to reinforce the Jedi . At the same time , Olmar Grahrk contacted his relatives through the communication system of the Jedi ship where he had been imprisoned ; the Jedi tracked the call and discovered the exact location of the command center . The other Devaronians escaped the system , deserting without even telling the Yinchorri . The joint Judicial and Jedi fleet cut through the Yinchorri naval defenses in Uhanayih , even though the Yinchorri still tried to counter - attack . Overwhelmed by a superior force , the Yinchorri leaders surrendered and ordered the other members of their species to surrender . The Chancellor then quarantined the Yinchorri system , forbidding transport to and from there . Sidious had managed to end with the potential threat of the Yinchorri for his plans . He had also reduced Valorum ' s influence , as he had to call in important favors , and also because Valorum ' s term was suddenly tainted with the greatest intergalactic conflict in eleven years since the end of the Stark Hyperspace War and the Mandalorian Civil War . Ten years after the conflict , Armand Isard , director of the Senate Bureau of Intelligence , publicly talked about the Yinchorri Uprising and several other disasters that should have been anticipated . The Yinchorri under the Empire . In 19 BBY , Darth Sidious , as Chancellor Palpatine , became Emperor and replaced the Galactic Republic with the Galactic Empire . He was helped by Darth Vader , also a Dark Lord of the Sith , and by an army of clone troopers . In 17 BBY , Yinchorr hosted a secret Imperial training center visited at least once by Palpatine and Vader . Aside from this , the Empire left Yinchorr unmolested , following the same logic that had led the Old Republic to do the same . Several rolk - mangirs were exported to the Core Worlds and the Corporate Sector , in a short - lived fashion , until possession and import of rolk - mangirs was forbidden on many worlds . As of 3 ABY , the Empire had named Marcellin Wessel governor of Yinchorr . Wessel decided to use Yinchorr as bait in a scheme to capture Princess Leia Organa , a high - ranking member of the Alliance to Restore the Republic . Wessel captured several members of the Council of Elders and kept them hostage , offering their lives to the Yinchorri people in exchange for Organa . Though Wessel did not intend to honor his word , the Yinchorri were unaware of that duplicity . The Yinchorri felt that the life of a Human stranger was less important than the lives of their leaders and prepared a trap for Organa . They pretended to want to join the Alliance and asked for Organa to visit Yinchorr . Organa boarded a Yinchorri ship and , once they were in the atmosphere of Yinchorr , Imperial TIE fighters shot down the craft , something that surprised the naïve Yinchorri crew . Only Organa survived the crash , but she was captured and brought to Wessel . Wessel then ordered the Elder Yinchorri killed in front of Organa . However , the Princess had called for help , and her friend Luke Skywalker arrived in time to save her . Enraged with the Empire , the Yinchorri attacked Wessel and his forces and overthrew him . The Elders of Tol - Kachorn replaced his government and gave their support to the Alliance , allowing them to build bases in the Yinchorr system . Other city - states offered warriors and ships to the Alliance . The local Moff asked the Imperial High Command for permission to punish the Yinchorri . The planet was bombed , destroying both the Rebel bases and the city - states , including Tol - Kachorn . The surviving Yinchorri became nomadic tribes in what they came to consider one of the greatest tragedies to befall their planet . The species held Marcellin Wessel directly responsible for their losses . One month after the bombing , Yinchorr attracted Palpatine ' s personal attention . The Emperor wanted to unify all of the training centers of his personal Royal Guard , and chose Yinchorr as the place . Eventually , the Empire cleansed Yinchorr of its native inhabitants , transforming it into a wasteland devoid of all life but the Imperials in the secret Imperial Royal Guard Academy . After the Empire . Yinchorr was still devoid of Yinchorri as of 11 ABY . Later , during the times of the New Republic , Yinchorri and rolk - mangirs returned to the world while Yinchorr was still under Imperial control . In 13 ABY , the New Republic waged a military campaign against the Empire to recover territory seized , following reports available to the Republic , by a clone of Palpatine . During that campaign , the New Republic seized Yinchorr . The surviving Yinchorri then unified under the banner of the surviving son of the leader of the Council of Elders of Tol - Kachorn , and settled in the fortress once used by the Imperial Guard . They began to re - build their civilization , but , although friendly to the New Republic , they refused to join it . However , as of 25 ABY , they did permit a New Republic military base and starship repair facility on their homeworld . In 130 ABY , the Galactic Empire under the control of Darth Krayt recovered Yinchorr and used it as a training field for stormtroopers . Krayt still had control over Yinchorr as of 137 ABY , with at least one Yinchorri serving among his stormtroopers . Yinchorri in the galaxy . Although some Yinchorri settled on other planets in their home system , they rarely felt the urge to live farther afield . Certain Yinchorri did move their extended families to other planets , however . Furthermore , several Yinchorri pursued a career in the greater galaxy . They excelled as bodyguards , mercenaries , pirates , privateers , and smugglers . Yinchorri were considered poor slaves , so slavers rarely bothered them . Those extra - system activities were constrained during part of their history , as the Old Republic initially restricted the sale of starships to the Yinchorri and , after the Yinchorri Uprising , approved an official embargo to the system . Following the uprising , Darth Sidious showed footage of the Yinchorri raid on the Jedi Temple to his apprentice Darth Maul . While he was sickened by how the Yinchorri were easily misled by the Jedi , Maul believed that the warriors ' mission would have been successful had he been leading their attack . In 43 ABY , Allana Solo identified one Yinchorri waiting on a queue on the planet Taris . In 137 ABY , at least one Yinchorri had become a stormtrooper for Darth Krayt ' s Galactic Empire . Although some Yinchorri had the ability to use the power of the Force , none had become a Jedi as of 28 ABY . Behind the scenes . The Yinchorri first appeared in " " , a comic book published by Marvel Comics in 1984 . It was written by Randy Stradley and drawn by Bob McLeod , with inks by Tom Palmer . At that point , the Yinchorri were identified as " Yinchori " . Stradley did not work on successive Star Wars comics for Marvel . In 1997 , the planet Yinchorr ( although not the Yinchorri ) re - appeared in the comic " Crimson Empire " , also written by Stradley and this time published by Dark Horse Comics . " Crimson Empire " explicitly states that there were no lifeforms on the planet Yinchorr except for the main characters of its story , but " Ultimate Alien Anthology " mentions the Yinchorri inhabiting Yinchorr both before and after this event , with no source explaining where the Yinchorri had been in the interim . The species returned , now spelled as " Yinchorri , " in the comic " " , also by Stradley , published in 2000 . Yinchorr is featured as an Imperial planet in the " " series , and a Yinchorri is seen among the stormtroopers serving Darth Krayt , as confirmed by author Jan Duursema on a web forum . In 2012 , the Yinchorri featured in James Luceno ' s novel " Darth Plagueis " . Inconsistencies . The role - playing game guide " Alien Anthology " makes several claims about the Yinchorri that are contradicted by later sources : It states that an adult Yinchorri stands between 1 . 7 and 2 . 2 meters tall , while the later " Ultimate Alien Anthology " suggests 2 . 4 to 2 . 7 meters instead . " Alien Anthology " also notes that a Yinchorri enters middle age at 51 standard years , while " Ultimate Alien Anthology " states the number as 41 years . " Alien Anthology " and " Ultimate Alien Anthology " also present different skill values for the average Yinchorri commoner . Lastly , " Alien Anthology " fails to provide rules for the natural resistance to mind control , something that " Ultimate Alien Anthology " corrects . As " Ultimate Alien Anthology " is the most recent source , this article assumes that the previous " Alien Anthology " was mistaken . " Ultimate Alien Anthology " claims that Yinchorr is in the Outer Rim Territories , but the story " A Two - Edged Sword " by Karen Traviss places Yinchorr in the Mid Rim . The most recent source , " The Essential Atlas " , places Yinchorr in the Expansion Region . " A Two - Edged Sword " mentions an Imperial training center on Yinchorr as soon as 17 BBY , while other sources , including " Ultimate Alien Anthology , " say that the Empire was not interested enough in Yinchorr to establish a presence on its surface .