Krytollak Krytollaks were a species of sentient , armored mammals indigenous to the planet Thandruss . They were led by an empress and had a rigid social structure , thinking that absolute monarchy was the only sensible form of government , both on a planetary and galactic level . When Palpatine anointed himself Galactic Emperor at the end of the Clone Wars , the Krytollak empress Devir recognized his right to rule , and her people become staunch supporters of the newly created Galactic Empire . Under the Imperial rule , the Krytollaks went through an era of unprecedented technological development , and some of them left their homeworld for the first time to join the wider galactic community as merchants , mercenaries or bounty hunters . Biology and appearance . Krytollaks were sentient , endothermic humanoids of the mammalian class . In addition to their internal skeletons , they also had armored outer shells , usually brown or black in color , which gave them an insectoid look . Some Krytollaks had green shells , which were considered a mark of noble status and gave them access to power . Krytollaks often painted their shells , with nobles usually decorating their shells with their personal crest . A Krytollak ' s shell would grow with his or her body throughout their lives . Krytollaks never stopped growing — older Krytollaks could be up to three meters tall , with females being ten to twenty centimeters taller on average than males of the same age . Their mouths and their dark brown or black eyes were visible in cracks between their shell plates . Though they could hear by sensing vibrations through their shells , they had no sense of smell . The Krytollak lifespan was about one standard century , with little loss of strength coming with age . Krytollak ate mostly vegetables and carbon - based rock s , with offworld vegetables and rocks considered delicacies . Society and culture . Krytollaks had a rigid social and political structure , and believed their rulers were destined to rule . They had two social classes : the workers , who made up 96 % of the population , and the royals . Royal Krytollaks were those born with green shells , and the brown - shelled children of green - shelled royals . If brown - shelled royals had brown - shelled children , they were removed to the worker class . Royals were schooled from birth to take administrative positions . If their performance merited it , they could rise from leading small villages to more senior positions . At the apex of their society was a single monarch . Krytollaks saw a single ruler as the only sensible way to organize society , which explained their quick acceptance of a galaxywide monarchy . They did not question their social system , or their place in it . Indeed , they were deeply suspicious of democracy , which they saw as overly fallible and fraught with corruption . Krytollaks rarely spoke unless directly addressed . They often seemed apathetic , but this was only because they were quite patient , preferring to wait until they fully understood a situation before getting involved . While this made them difficult to anger , they were also very slow to forgive an insult . Among themselves , they preferred violent entertainment . Many social gatherings included relatively friendly brawls , since their thick shells prevented serious injury in hand - to - hand combat . Serious matters of honor among nobles would be settled in duels with melee weapons ( as ranged weapons were considered dishonorable . ) Vibroblades were greatly prized , though they could only be obtained through offworld trade . History . The Krytollaks evolved on Thandruss , a planet located within the Expansion Region of the galaxy . Before first contact with the Empire , the Krytollaks were limited to early industrial technology , with steam engines and primitive radionics broadcasting . Despite their primitive technology , they had established a single planetary government . Empress Devir , who began her rule circa 20 BBY , quickly recognized Palpatine as her rightful lord and master , and accepted Imperial advisors to help her rule . As a result of Imperial influence , Krytollak nobles began to dress in robes which imitated Imperial court dress or uniforms . The gray of Imperial military uniforms was reserved for nobles . Under Imperial rule , Thandruss gained the benefits of rapid technological improvement and trade with Imperial - allied corporations and alien species ( such as the Sullustans and the Herglics . ) However , many Krytollaks were unhappy with the high Imperial taxes which came with these benefits . They remained steadfastly loyal to the Emperor , placing the blame on the Emperor ' s subordinates instead . Krytollak in the galaxy . Under the Empire , a few nobles left Thandruss to seek glory as mercenaries , bounty hunters , or traders . Some workers worked as menial laborers offoworld . Other Krytollaks were pressed into Imperial service , a duty they considered a great honor . Despite their pro - Imperial stance , a few Krytollaks allied themselves with the Alliance to Restore the Republic . These Krytollaks still saw themselves as loyal to Palpatine — their only problem was with certain Imperial Governors and Moffs who they viewed as corrupt servants of the rightful galactic ruler . They believed that if the crimes of his servants were brought to light , Palpatine would restore justice . Some Krytollak acted as spies , infiltrating the Alliance to Restore the Republic seeking information for the Galactic Empire .