Mohs Mohs was an aged and stooped Sharu male belonging to the Toka culture . He was the High Singer of the subintelligent Toka , and he knew all their legends about the ancient , advanced , and supposedly extinct Sharu species . Mohs lived in the city of Teguta Lusat on Rafa IV . After Lando Calrissian was tasked with finding the legendary Mindharp of the Sharu by Rokur Gepta and local governor Duttes Mer , Mohs encountered him in a local bar , the Spaceman ' s Rest . He attempted to steal the Sharu artifact known as the Fabled Key from Calrissian ' s possession , but was unsuccessful . Agreeing to help Calrissian find the Mindharp on Rafa V , Mohs instead betrayed him to the local Toka . He was ritually forbidden from killing Calrissian , and so he tied him to a tree in one of Rafa V ' s life - orchard s . After Calrissian escaped both death from exposure and the intelligence - sucking life - orchard , Mohs showed the adventurer and his droid companion , Vuffi Raa , where to find the Great Lock set into the largest of the Sharu pyramids . When Calrissian , Raa , and Mohs entered the pyramid , its Sharu technology caused Mohs to grow to sixty times his original height and mysteriously lose his sight . In the Sharu pyramid , Mohs began to regain some of the intelligence that had been stripped from him and the rest of the Toka in the distant past . While Calrissian and Raa were still exploring the pyramid to find the Mindharp , Mohs abandoned him and returned via Sharu technology to Rafa IV , where he began making preparations for Calrissian ' s return . Four months after he entered the pyramid , Calrissian discovered the Mindharp and was transported back to Teguta Lusat . Betrayed by Vuffi Raa , he was forced to surrender the Mindharp to Duttes Mer , who attempted to access its secrets . Mohs waited for Calrissian inside the starship " Millennium Falcon " and encountered the gambler again there . The Toka man revealed himself as a Sharu and explained that because the Mindharp had been played all the Toka were becoming Sharu again . Mohs then left Calrissian ' s starship before the " Millennium Falcon " fled the Rafa system . Biography . Rafa IV . Mohs was chosen when he was young to be the High Singer of the Sharu , and heard and obeyed the voices of the Rafa system ' s Sharu artifacts all his life . The Rafa system was littered with these artifacts , the abandoned remnants of an ancient race that was presumed to be extinct . As a symbol of Mohs ' s position , he bore on his forehead a line drawing of the artifact known as the Mindharp . Like all Toka , Mohs was essentially a slave of the Centran colonists , but he held a position of authority within his own species . After another Toka working at the Spaceman ' s Rest saloon spotted a Sharu artifact in the possession of Lando Calrissian , he alerted Mohs and Mohs came to speak with the itinerant adventurer . Calrissian had been given the Fabled Key of the Sharu by Scrivinir Rokur Gepta and Duttes Mer . Gepta was the ruler of the Centrality in the Outer Rim , while Mer was the governor of Rafa IV . The pair employed Calrissian to find the fabled Mindharp , said to be the Ultimate Instrument of Music . In Toka legend , the Key Bearer and his companion the Emissary would liberate the Mindharp with the Fabled Key and use it to call back the Sharu species from their presumed extinction . While Mohs initially believed that Calrissian was the Key Bearer , and Calrissian ' s companion Vuffi Raa was the Emissary , Calrissian ' s behavior made him reconsider this . While Calrissian was distracted , Mohs swiped the Key and slipped out the back door . However , Calrissian spotted Mohs leaving and tackled him , beating him into submission . Groveling , Mohs apologized and Calrissian invited him to come along on his mission as a guide . While Calrissian and Vuffi Raa took a hoverbus , Sharu technology transported Mohs to the spaceport instantaneously . A crowd of chanting Toka gathered around him . Aboard the " Millennium Falcon " . After the Toka crowd finished chanting the Song of the Emissary , Mohs asked Lando Calrissian about his plans . Calrissian intended to sleep aboard his starship , the " Millennium Falcon " , but was startled when he found local police surrounding it . Duttes Mer ' s men were loading the promised reward of Rafan life - crystal s in the " Falcon " hold , but had also sabotaged the hyperdrive to compel Calrissian ' s compliance . Calrissian then boarded the vessel with Vuffi Raa and Mohs in tow . In the cockpit , Mohs spoke about the Toka legend that a dark adventurer and his shiny companion would come to liberate the Mindharp . Calrissian then realized that Gepta and Mer had chosen him because he fit the profile of the prophesied rescuer . The next day , after the " Millennium Falcon " took off , Calrissian asked Mohs where the Mindharp was . Pointing out the viewscreen , the Toka recited the Song of the Reflective Telescope , directing the spacer and his droid companion to the nearby world of Rafa V . Calrissian and Raa then quizzed the Toka further on the various chants he knew before setting out . After a few hours of travel , the " Millennium Falcon " hit some space debris in Rafa V ' s orbit . Since its deflector shields were down , the " Falcon " hull was breached and it began to lose atmosphere . Raa brought the vessel in for an emergency landing where Mohs had indicated , near an asymmetric , multicolored , plastic Sharu pyramid approximately twelve kilometers tall and seven kilometers wide . A hail of arrows . The world of Rafa V was bitterly cold , with low humidity . After the trio departed the vessel and the " Falcon " ramp had been raised , they were ambushed by a tribe of Toka with weapons that resembled crossbows . Their extremely accurate fire disabled Vuffi Raa as well as Calrissian ' s blaster . Mohs took command of the natives and demanded the Key from Calrissian , who refused and insulted Mohs ' mother . Since Mohs and the other Toka were ritually forbidden from harming the Bearer of the Key , they instead marched him miles away to a life - orchard . They then stripped him of his clothing , tied him to one of the intelligence - draining trees , and abandoned him to the elements in only a loincloth and his semi - formal cummerbund . Calrissian escaped his bonds , captured a police detachment sent to arrest him , and returned to the place next to the pyramid where he had earlier been ambushed . Mohs was there to meet him , cooking a vuole on a stick over a fire . After some discussion , Mohs agreed to show Calrissian the place to use the Key . Vuffi Raa uncovered the Great Lock a meter below the surface , and Calrissian inserted the Key . After a short pause , Mohs , Calrissian , and the droid were transported into the pyramid . Within the great pyramid . Mohs fell through the wall of the pyramid , and into darkness . He was instantaneously blinded , although he failed to notice . As soon as he was in the pyramid , he began to think clearer than he ever had before . By the time Calrissian arrived through the wall , he had discovered a new , less drafty way to tie his loincloth and was considering problems of geometry . The technology of the Sharu caused both Mohs and Calrissian to grow to sixty times their normal heights . Their thought processes and perception of the flow of time was altered so that to an outside observer they appeared to act with incredible slowness . Vuffi Raa was unaffected , but shunted into a maintenance system for more than thirty - two hours . When Raa emerged , only about half an hour had passed from the point of view of Mohs and Lando Calrissian . Mohs directed Calrissian ( and Raa , who was riding on Calrissian ' s earlobe ) to a ramp set into the floor . As the two giants stepped onto the ramp , it began to move . The moving ramp descended in a six hundred kilometer diameter spiral . The journey on the ramp took many hours from the giants ' perspective . The tunnel then flattened out and began traveling through a diagonal upthrust formation . After Calrissian dropped off to sleep , Mohs gained more understanding of the purpose of the Sharu artifacts and left the group , eventually regaining his usual size and traveling back to Rafa IV via Sharu technology . The pyramid then erased all memory of Mohs from Vuffi Raa . Sharu reborn . Four months after they had entered the pyramid on Rafa V , Calrissian and Raa emerged on the streets of Teguta Lusat , bearing the meter - high Mindharp . Calrissian was detained by Duttes Mer , who took the Mindharp for his own . Mer then attempted to play the Mindharp , thinking it would give him total control over everyone in the system . Instead , his continued attempts triggered massive earthquakes . The Sharu artifacts across the Rafa system began to collapse , warp , and change as the ancient computer system started to restore the Sharu civilization . Mer was killed as he and the Mindharp melted together . Mohs was waiting for Calrissian and Raa on the " Millennium Falcon " when they escaped the cataclysm . Now snappily dressed and sporting insect - like , brightly colored compound eyes , he lowered the ramp for the duo . Briefly , he discussed events with the gambler and his droid companion while they went through their pre - flight checklist . Mohs remained behind on the changing world when the " Millennium Falcon " fled the Rafa system . Personality and traits . Mohs spent most of his life in an uncivilized state , doing as the Rafa IV colonists directed and hearing the voices of the sophisticated ancient Sharu computer system . He was ordered about and mysteriously transported places at their command . Mohs was the only High Singer of the Toka in his generation . The symbol of his position was a line drawing tattoo of the Mindharp on his forehead . He was ancient and toothless , and wore a three - meter long gray loincloth wrapped crudely around his waist . The High Singer alternated between awe and suspicion of Lando Calrissian and Vuffi Raa , helping and betraying them in equal measure . His role allowed him to instantly take command of any Toka group in the system . He knew approximately seven thousand , six hundred , and twenty - three chants of the Toka , and spoke both a peculiar version of Galactic Basic Standard and the Toka variant of Old High Trammic . After he entered the Sharu pyramid , Mohs was no longer intellectually stunted by the Rafan life - orchards . He began to think in innovative ways , and was able to use the rest of his senses to completely compensate for his eyes being removed . When he left the pyramid , his ruined eyes were replaced by multicolored compound cybernetics by the ancient Sharu computer system . After he returned to Rafa IV , Mohs demonstrated more care for his appearance and acquired an expensive business suit and a nice haircut . Behind the scenes . Mohs was created by author L . Neil Smith for part one of the 1980s " The Lando Calrissian Adventures " novel trilogy , " Lando Calrissian and the Mindharp of Sharu " .