Gree Gree was a planet located within the Gree Enclave , a small region in the Veragi sector of the Outer Rim Territories . It was the homeworld of the Gree species , a race of six - tentacled cephalopods who , despite having an advanced form of technology , allowed their society to fall into ruin when they began prizing an individual ' s mastery of their advanced devices over improving them or creating new ones . As the Operator caste became more powerful within Gree society , they guarded the secrets of operating and manipulating their devices , sometimes dying before they could pass the knowledge on to their apprentices . Gree served as the capital of the Enclave and was considered to be the cultural center of Gree society , revered by all members of the species as a sacred place . By the time of the Galactic Empire , Gree had fallen into ruin following the near - collapse of Gree society . Only one major city remained , and the rest of the planet was a virtual wasteland covered in barren plains and abandoned ruins . Little was known of the planet to other species ; the Gree restricted visitors to the world , with individuals only being permitted onto the world at the behest of the planetary grand council . Description . The homeworld of the Gree species — an ancient race of six - tentacled cephalopods — Gree was located within the star system of the same name , which lay deep in the Gree Enclave , a small region of space in the Veragi sector of the Outer Rim Territories . The planet was accessible by hyperlane routes from the worlds of Malanose and Lonatro , and was the only world within the Enclave that had a direct route to Licha In . The distance between Gree and these worlds could be traversed by the Rokak ' k Baran — a large Gree - designed transport starship with a Class 3 hyperdrive — in two days . Gree had a Type II atmosphere , which meant that life could be sustained on the planet , but due to environmental factors — such as higher or lower atmospheric pressure , ratio of oxygen to other gases , or contaminants in the air — it was suggested that breath masks were worn by species that had evolved in a Type I atmosphere to counter any negative effects they might suffer . It was , however , comfortable for the native Gree . A standard day on the planet was twenty - seven hours long , and a year lasted 360 local days . Following the near - collapse of Gree society , the planet was a barren and harsh world by the time of the rise of the Galactic Empire ; the surface was predominately wasteland , and covered in the ruins of abandoned cities . Only one city remained habitable , and it was home to 60 million Gree during the years of the Galactic Civil War . The planet was ruled by a grand council , and was also the location of the grandmaster council , the political body that all planetary grand councils answered to . Gree was also the destination point of at least two hypergate s — devices capable of instantaneous transport of people and objects between two points — based on Asation . Although non - functional by the time of the Galactic Civil War , travel between the two worlds had been common before the decline of Gree civilization . History . Gree society reached its apex more than 30 , 000 years before the Galactic Civil War . The planet Gree was held in high regard by the Gree , who — regardless of whether or not they had visited the planet — considered it a sacred and revered place . As the home planet of their civilization , it was at the center of Gree culture . Non - Gree visitors to the planet were extremely rare , and had to be specially invited by the planet ' s grand council . This usually occurred when conducting large - scale business with off - worlders on Asation — the gateway world to the Gree Enclave — was undesirable or unacceptable to the Gree themselves . Some time before 3643 BBY , the Gree Enclave was discovered by a scout , Captain Marrix , leading to first contact between the Gree and the Galactic Republic . Marrix was respected by the Gree , and was allowed to visit their homeworld on a single occasion . By the time of the Galactic Civil War , the history of Gree , and its native species , was a mystery , even to the Gree themselves . Scholars believed that the Gree species evolved on Gree thousands of years before the Galactic Civil War , and their civilization had slid into ruin before the formation of the Galactic Republic . It was rumored that the predecessor to Imperial Consul - General Skalus was permitted to visit the planet when he negotiated the annexation of Asation into the Empire . Those visitors who were permitted onto the planet conducted scholarly , diplomatic , or trade negotiations . Inhabitants . The planet was inhabited by the Gree , and was the species ' homeworld . Non - Gree were not allowed to immigrate to the planet , and off - world visitors were a rarity . The Gree were one of the oldest races that evolved in the galaxy , mastering hyperspace flight before many species had even entered their industrial ages . During this time , they developed a unique form of technology based around the process of material synthesis . Devices constructed by the Gree were individually unique , and emitted musical notes as they were activated — in effect , requiring the operator to " play " the device . Each device was attuned to Gree physiology , requiring the use of six tentacles to operate properly . The technology became the cornerstone of Gree society , and was employed throughout the Enclave . Originally , the Gree employed a caste system consisting of four professions : the Crafter s who produced new devices ; the Researcher s who designed new devices ; the Operator s who manipulated and used the devices ; and the Administrators who acted as the Gree government . Over time , however , the Gree began focusing on the artistry of actually operating the devices rather than attempting to improve them , or create new ones . As the Gree decided that their technology had reached its apex , the Crafter and Researcher castes , no longer deemed necessary to society , died out . The Operators became more influential in Gree society , with more and more power ceded to them by the Administrators . As masters — those Gree capable of activating and maintaining the Gree devices — died without passing on their expertise , the knowledge to operate many devices was lost . Without the Crafter and Researcher castes , the Gree gradually lost the ability to create and repair their technology as devices failed . By the time of the Galactic Empire , the Gree civilization was a shadow of its former self ; although they had access to advanced technological devices , they had no idea how to improve upon them or repair them . Maintenance of the existing devices were of paramount importance to the Gree , and masters from the Operator caste dominated Gree culture and society due to their ability to operate the remaining devices . Locations . The Gree capital was the only inhabited city on the planet during the time of the Empire . Situated on a large plain , the city was a sprawling affair , made up mainly of halls and skyscrapers . Although home to 60 million Gree , much of the city was abandoned , and it had no starport of any kind . Incoming ships were required to land on a flat slab in the center of the city . Advanced Gree technology was common in the city ; in some cases surpassing the technological level that was standard on Imperial worlds at the time . However , anachronistic technology that was well under the Imperial standard was also in evidence . Behind the scenes . The planet Gree was first introduced in " The Gree Enclave " , an article published in West End Games ' " Star Wars Adventure Journal 8 " , in November 1995 . It was written by Timothy O ' Brien . The information was subsequently reprinted in " " , released in 1997 , and mention was made of the planet in the Gree entry in " Alien Encounters " .