Kallidahin / Legends The Kallidahin , also known as Polis Massans , were a race of sentient cetaceans native to the world of Kallidah , having obtained their misleading name due to their extensive century - spanning digs on their adopted home in Polis Massa . The Kallidahin lacked facial features and were commonly mute , resorting to signs and telepathy to communicate . Though they had little contact with other species and were considered hermetic , they were known for their extraordinary medical , archaeological and xenobiological skills , and were regarded as compassionate beings who understood the value of life . They were also known for their massive xenobiology database . Members of this species were mainly concerned with their excavation in Polis Massa , where they were secretly trying to find proof of any relationship between their own species and the original inhabitants of Polis Massa , the extinct Eellayin . Although they did little to contact the wider galaxy beyond their business with the similarly secretive Kaminoans , they were kind to any visitors . The Kallidahin helped Jedi Masters Yoda and Obi - Wan Kenobi several times , including trying to save the life of their ally Padmé Amidala and taking care of the last stages of her pregnancy . In later years , the Alliance to Restore the Republic built an outpost in Polis Massa that was eventually raided by the Galactic Empire , but the locals were unmolested during this time . Biology and appearance . The average Kallidahin was a short , thin being unable to walk as fast as a Human would or , on average , to compare to a Human ' s strength . They had skinny bodies covered by soft gray skin that , being thick , smooth , and partially insulating , pointed to their aquatic , cetacean ancestors . Their fibrous figures were also surrounded by anatomical features known as growth rings . During the Old Republic era , xenobiologists could not identify the evolutionary reason that the species developed this tree - like trait . The head was connected with the body through a long , thin neck . A member of the species had a flat , pale face , covered by an osmotic membrane that left them featureless . The only facial feature was a pair of black eyes . Those visual organs lacked any expressiveness , but they were deep - focus and useful for work deep underground and for research in the field of medicine . A member of this species also had thin arms with nimble gray hands , each with four long , dexterous fingers including an opposable thumb . Most Kallidahin were mute due to a natural lack of vocal cords . Their language , known as Massan , combined computers , sign language , and the use of their mildly telepathic brains . Their telepathy was not related to the thought transmission used by adepts of the Force , although it worked similarly when broadcasting thoughts and simple feelings to willing receivers in a fifteen - meter area . The Massan language has been described as falling beyond the Human auditive spectrum when used in its purest form . However , a small subset of Kallidahin , referred to as " speakers " by their people , did possess vocal cords and could physically speak languages such as Galactic Basic Standard , though their voices were soft and strangely resonant . Society and culture . The Kallidahin were known for their compassion and kindness , while their also characteristic discretion was not as widely known . They greatly valued freedom and life in any form and had such a peaceful nature and respect for life that only rarely would they follow a soldier ' s career . Although able to protect themselves and their culture when the need arose , they were not an aggressive species and rejected direct confrontations even when the greater goals of the species were at risk . They felt an overwhelming desire to gain data about other species , as they were analytical and felt the research was particularly important when related to the origins of their own species . They were gifted xenobiologist s but , being unskilled in diplomacy , preferred study from afar instead of direct interaction with the beings of interest . The species also had galaxy - wide fame for their skill in the fields of archaeology and medicine . Their medics , while not as abundant as their excavators , were known for being dedicated healers . Many members of the species were miners or speleologists , and wore form - fitting bodysuits fitted with all manner of signaling devices , medical equipment and utility pouches . The majority of these miners were seasoned spelunkers , and dug deep into the core of the asteroid field of Polis Massa to locate prize artifacts . All of them were committed and enthusiastic workers who commonly enjoyed a full day of work in the core of the asteroid field . History . Origins . Although most of the galaxy believed the Kallidahin to be the original inhabitants of the planetoid Polis Massa , the species had actually evolved on a different world known as Kallidah , in the Subterrel sector . The planet Polis Massa , in the more isolated limits of the Outer Rim Territories , was instead the original home of a subterranean civilization known as the Eellayin Many centuries before the Battle of Yavin , Polis Massa exploded due to a natural disaster whose cause would remain unknown in further years . The native Eellayin mysteriously vanished afterwards and the Kallidahin and the Republic subsequently considered the Eeyallin to be extinct . The planet became an asteroid field , with the biggest asteroid being renamed Polis Massa . Given Kallidahin reticence , few details were known of their past before the sixth century BBY . At some point in the past , this species made a deal with another one to learn the cloning techniques from the secretive clone - masters known as Kaminoans . The Kaminoans agreed to the deal in exchange for certain xenobiological data in the Kallidahin archives . Although the Kallidahin were not as adept as Kaminoans , they managed to employ the cloning technology sufficiently to re - build biological matter they had found in archaeological digs . They believed themselves to be descendants of the ancient Eellayin species once native to Polis Massa , although they kept this conviction in secret . The Kallidahin also learned to use cloning for medical purposes , although they were not as advanced as the Kaminoans in this field . Later , in the sixth century BBY , the Archaeological Research Council decided to establish a Research Base on the largest of the asteroid remnants of the Polis Massa system , by then known as Polis Massa , to unearth evidence of this evolutionary link . Circa 519 BBY , the entire population of Kallidah left their homeworld to mine at Polis Massa . They traveled to the biggest asteroids in the system to start looking for clues . The main objective of the species in successive years would be discovering their real connection with the Eellayin . Although their civilization officially covered the whole asteroid field , only the biggest asteroids had a settled population . They organized their new life in Polis Massa , centered around an archaeological dig that would be surrounded by a mining colony . As the asteroids lacked a natural atmosphere and the Kallidahin were oxygen - breathers , they resorted to airtight buildings . They built their new capital , Polis Massa Base , and organized imports of food , water and machinery , even if the system had no real exports . They also built , in one of the closed habitats , a high - quality medical center mostly equipped for the physiological needs of Kallidahin patients . In later centuries , they found many artifacts and remains of the Eellayin , although real proofs of the relation , commonly coming from the depths of the Polis Massa asteroid , were scarce . The species had trouble with treasure hunters wanting to plunder their digs , and with the raising piracy in the Outer Rim Territories . The inhabitants of Polis Massa were quiet in their work to avoid attracting any undesired attention and refused to get involved with the rest of the galaxy , but nevertheless they kept their politeness when dealing with aliens . When their initial research began to take dozens of decades , the Kallidahin chose to remain in Polis Massa and continue their task for as long as needed ; soon , they had been away from Kallidah for so long that the species had no living memories of their own origin . At that point , aliens in the galaxy began calling the Kallidahin with the name of Polis Massans because they had been living in Polis Massa for centuries . The species humbly accepted their new name , feeling honored and with no objection . At some point during their research , the Kallidahin found the remains of Wiyentaah , an Eellayin city , and built an installation , The Local Dig , over it , to carefully excavate the metropolis little by little . Because many of the unearthed artifacts were fragile , they were kept in secure , sterile rooms . Other cultures began to speculate about the real connection between the Kallidahin and the Eellayin , but the Kallidahin were silent in that respect . As the Kallidahin were always anxious to learn about xenobiology , many other species believed that their traditional drive was their real motivation . They said they wanted to preserve the memory of the lost Eellayin , but certain outsiders believed they really wanted to resurrect their ancestors using their cloning technology . The species now called Polis Massans had previously cloned extinct lifeforms in other places . Following this hypothesis , they had not succeeded in cloning Eellayin because they had not found adequate genetic material . The Kallidahin also began building droids through a company known as Polis Massa Pria Assemblage . They mostly manufactured machines for their own use instead of exporting them , mainly archaeological droids and miner droids ; but they also needed help in skills beyond xenobiology , like . Apparently to that end , they built the Chroon - Tan B - Machine , which had a face inspired in the species ' . Another alien who had had contact with the Kallidahin was Yoda , a renowned Jedi Master . Yoda had dealt with the Kallidahin Maneeli Tuun , operational head of the medical center of Polis Massa and firm supporter of the Galactic Republic . Order 66 . In 19 BBY , Yoda became a fugitive and , along with his ally Bail Organa , went to Polis Massa looking for a haven . He had chosen this asteroid field partly because it was remote , adequate to harbor him , and partly because he knew he could count on Tuun . Yoda was soon joined by his allies Jedi Master Obi - Wan Kenobi , droids C - 3PO and R2 - D2 and pregnant , injured Senator Padmé Amidala , all of them traveling in Amidala ' s star skiff . They asked the Kallidahin to help during the childbirth . However , the available obstetricians were mostly members of an archaeological dig team , with only two of them being seasoned physicians ; the others were exobiologists . Amidala ' s condition was so severe that they had no time to look for more prepared doctors . The doctors even had to operate in their mining bodysuits , not having a minute to change clothes . The Kallidahin who treated her were Maneeli Tuun , Dznori Xam and Selif Xam , with the added presence of Osh Scal , a non - medic supply officer . Recognizing their unfamiliarity with Human parturition , the Kallidahin consulted their databank and resorted to a Chiewab Amalgamated GH - 7 medical diagnosis droid , an advanced droid of which they had several units , to deal with Amidala ' s injuries ; and a seldom - used Chroon - Tan B - Machine to help with the childbearing . Although Amidala had twins , Luke and Leia , she had lost any will to live and slowly refused to recover . The Kallidahins and the droid did everything in their power to save her life , but failed . R2 - D2 secretly recorded all the events with his holocam . To keep the births a secret , the Jedi decided to simulate that Amidala was still pregnant when she had died . The discreet Kallidahin agreed to keep the secret , even if they probably did not understand the galaxy - wide importance of it . Kenobi and Yoda asked them to erase any record of the births , including a memory wipe of the used medical droids . However , the doctors had performed safety tests to the newborns , consuming several supplies , and the supply record was forgotten during the deletion . The Jedi and Organa left soon afterwards , heading to Naboo to bury Amidala . The Imperial Inquisition . Soon afterwards , the by - then Emperor Palpatine set up the Inquisitorius , formed by special Intelligence agents , including an Inquisitor Malorum in charge of the planet Bellassa . A source informed Malorum about the burial of Amidala , telling him that a Jedi had taken the corpse from Polis Massa to Naboo . Malorum wanted to discover more details about this to use the information against his rival Darth Vader — secretly the father of Amidala ' s children . Malorum hired Boba Fett , a teenaged bounty hunter , to examine the medical records of the Polis Massa clinic and also Naboo . Never giving his own name , Fett visited Polis Massa as an Imperial investigator , copied all the files and took them to Malorum . Thanks to the precautions taken after the birth , those documents were useless to Malorum . Meanwhile , Obi - Wan Kenobi joined forces with former Padawan learner Ferus Olin against Malorum , particularly when Kenobi discovered Malorum ' s interest in Polis Massa . Malorum dispatched a new agent , an Inquisitor by the name of Sancor , who was an expert in record security . The personal interest of the Inquisitorius might have led the Kallidahin to suspect that the birth was more important than they had previously thought . Sancor dealt with Tuun and searched the memory banks of the medical droids . Sancor later asked Tuun for the supply records and the presence of supply officer Osh Scal . As Schal was among the few members of this species who had an audible voice , Sancor could question him personally . Obi - Wan Kenobi , following his instincts , split up from Olin to visit Polis Massa . Kenobi intercepted Tuun before the Inquisitor could find Schal and the Jedi asked Schal to forge the records Sancor was analyzing , giving him a more important , although fictional , fugitive to track . Kenobi also disguised himself as a Kallidahin and met with Sancor , pretending to be Scal ; during the questioning , Kenobi tried to misdirect the Inquisitor . However , Sancor saw a graphic depiction of the real Scal in the records and noticed that Kenobi did not look like him . Sancor attacked Kenobi and Tuun , but Kenobi scared him by activating his lightsaber . Sancor tried to escape from the system to report to Malorum . Kenobi and him struggled , and Sancor was killed . In order to cover Kenobi ' s tracks , Tuun then sent a message to Malorum , describing the " accidental " death of his envoy who fell from an observation platform and landed on sharp chirurgical tools . Kenobi had to leave the asteroid soon afterwards . He met with Olin and asked him to take care of Malorum . Kenobi specifically asked Olin to not allow Malorum to discover whatever had happened in Polis Massa . Malorum met with Darth Vader soon afterwards and mentioned that he was researching events in the planetoid Polis Massa . Darth Vader forcefully requested Malorum to forget any work in that direction . Olin , who was secretly eavesdropping on the conversation , was sure that Malorum would continue probing Polis Massa . Malorum personally visited Polis Massa soon after this event ; however , even he was unable to find anything there . He then tried his luck on Naboo and discovered useful information . Malorum was then found by Olin and died while dueling him ; the truth about the birth in Polis Massa remained a secret . Galactic Civil War . During the first days of the Alliance to Restore the Republic , a movement that started in 2 BBY , the Rebel command mounted a secret base on Polis Massa . The Alliance launched several operations from this base , although the crew did their best not to disturb the nearby excavations . The Empire raided this base repeatedly without achieving its destruction ; during all these conflicts , the digs of the Kallidahin were untouched . In 0 BBY , when Darth Vader sent his elite 501st Legion to recover important information that the Rebels had stolen , the Empire annihilated the base and killed all the Rebels , again without disturbing the nearby Kallidahin . Later conflicts . During the Yuuzhan Vong War ( 25 – 29 ABY ) , the Yuuzhan Vong invaders found no reason to raid Polis Massa : it was too remote and held no strategic value or important resources that they could use . The later Dark Nest Crisis of 36 ABY was similarly clement with the Kallidahin . During this campaign , however , R2 - D2 showed his holorecording of Polis Massa to by - then adult Luke Skywalker , his wife Mara Jade Skywalker and his nephew Jacen Solo , along with other files of Padmé Amidala ' s later days . By then , Jade was suspected to have murdered her husband ' s mother , and the droid ' s files served to clear her name . Kallidahin in the galaxy . Perceived by others as silent and weird , Kallidahin were considered among the most mysterious species in the galaxy . The mute , faceless sentients were not social creatures in the way Humans could be . They limited their contact with other species as a way to protect their work . The Kallidahin had a massive database with xenobiological information about many alien species , but nevertheless they had little face - to - face contact with other cultures . Probably the most exhaustive contact the Kallidahin had with another species was with the Eellayin , an extinct people whose memory they tried to preserve in their digs . The Kallidahin , commonly restricted to the Polis Massa system , rarely encountered any other sentients beyond the pirates and treasure hunters who wanted to profit from the locals ' hard work . The Kallidahin had dealt with the similarly reclusive Kaminoans in the past , obtaining important technology in exchange for their data on xenobiology , but the Polis Massans would rather be secretive about the results of their work . Sometimes , the Kallidahin went beyond the borders of the Polis Massa system , commonly for exobiological reasons , but in those cases they did not go too far . Soon before the Clone Wars , some exobiologists of this species were sent to a different planet in the Subterrel sector to perform research . The local fauna included fierce predators , but the exobiologists managed to keep them at bay using Kamino saberdarts they had obtain in their deals with the Kaminoans . Another traveler to the planet , a Besalisk known as Dexter Jettster , witnessed the use of the saberdarts and was impressed with them . Although their personality and telepathic abilities could have given them excellent careers in the Jedi Order , or in certain criminal activities , there were no known precedents of Kallidahin Jedi or rogues . Some Kallidahin , including Maneeli Tuun , supported the Galactic Republic following their firm beliefs , but they remained mostly beyond the reach of the Republic ' s judicial arm . Jedi Master Yoda , and later Jedi Master Obi - Wan Kenobi , were known to have trusted this cetacean of firm ideals . Behind the scenes . The Polis Massans first appeared in the of ( 2005 ) , and then in the movie and most of the adaptations ( , , ) . They are notably absent in the adaptation , in which Padmé Amidala is operated on only by droids . Conversely , in the video game " LEGO Star Wars : The Complete Saga " , Amidala is treated only by a Kallidahin , with no visible droids . The first conceptual art for these beings was drawn by illustrator Doug Chiang for . Following concept sculptor Robert E . Barnes ' s memories of the event , director George Lucas provided Chiang with a monochrome photograph of a mask without any facial features except circled eyes . This appearance was considered for the Kaminoan species , but ultimately the design was rejected in favor of another that was considered more elegant . Chiang ' s design went unused in " Attack of the Clones " ; however , it was later recovered for the following movie . After other early sketches for the species had been drawn by Stian Dahlslett and Sang Jun Lee , an approximate idea for the species ' outline was reached . Michael Patrick Murnane perfected Chiang ' s original designs and then sculpted busts of the faceless aliens ; when the statues received Lucas ' s approval , Murnane and Jun worked together on a full - body model . Murnane compared the result to creatures in animated movie " . " For the skin , a dolphin - like texture was used . Finally , the movie featured computer - generated Polis Massans ( the name " Kallidahin " had not been assigned yet ) in a scene with a computer - generated medical droid . The novel " " ( 2005 ) , by Jude Watson , described Kallidahin Maneeli Tuun as particularly expressive for someone who lacked facial features as seen in the movie . In chapter 9 , Tuun " looked thin and worried … a look of startled pleasure came over his face but then was replaced by the same frown . " Later , his " troubled expression cleared , " he " ran his hands along his cheeks and blew out a tired breath , " and he even " gave a small smile . " It is unclear how he can frown , blow out or smile without a brow or a mouth , as the descriptions are apparently not metaphorical . Non - canon appearances . The following section describes the appearance of Kallidahin in official , albeit non - canon ical , stories . The non - canonicity of the story " Old Wounds " , published in " " ( 2005 ) , is discussed in its own article and the " behind the scenes " section of Darth Maul ' s , as several other sources seem to reference it , but the whole story was confirmed as non - canon by Leland Chee soon after its publication . The plot followed Darth Maul after having been defeated by Obi - Wan Kenobi on Naboo in 32 BBY . Through unexplained means , Maul had survived and became a cyborg , and in 15 BBY Maul was tracking Kenobi , driven by revenge . Maul followed Kenobi ' s trail from Mustafar to Polis Massa , where he killed at least two mute Kallidahin in what he deemed an unsatisfactory carnage . Later , Maul checked his victims ' medlog and somehow learned that Kenobi was on Tatooine . Maul then left Polis Massa and continued with his chase .