Kaikielius Kaikielius was a planet in the Kaikielius system of the Core Worlds . A regional power before the rise of the Republic and a Core Founder , it was situated on the Koros Trunk Line , just outside of the Deep Core . The planet was the homeworld of the influential political dynasty House Praji . Description . Kaikielius was located on the Koros Trunk Line between Foerost and Ruan , linking Coruscant to the carbonite - producing worlds of the Deep Core . The planet occupied a strategically - vital position that throughout history made it a target for fleets seeking to conquer Coruscant , whether from the Deep Core or from the Corellian Run via the Agricultural Circuit . Historically , Kaikielius was a rural and pastoral world , with the planetary capital based at Kesipli . The planet was heavily - urbanised after 5000 BBY in a desperate attempt to compete economically with the Empress Teta system , and became known for poverty , pollution , and urban decay . " Ring - cities " developed as mayors walled - off city centers in an effort to contain crime while construction continued to expand in concentric rings of development . Following the Kaikieli Reconquista of 4225 BBY and the destruction of most of the planet ' s criminal elements , Kaikielius was largely restored and became described as the gentrified suburb compared to Coruscant ' s urban center . History . Pre - Republic era . The planet was settled some time between 25 , 200 BBY and 25 , 053 BBY by Humans after the fall of the Rakata n Infinite Empire . The locals were known as Kaikielii . An aristocratic world , Kaikielius was ruled by the noble Great House s , of which the oldest and most prominent were the Triad of House Praji , House Vahali , and House Juoni , with lesser houses vying for patronage . Before the rise of the Galactic Republic , Kaikielius had held suzerainty over Ruan , the moons of Jonsior , and Foerost . An early ruler of the planet was Governor Tyler Sapius Praji , who was a signatory of the Galactic Constitution , bringing Kaikielius into the Galactic Republic as a Core Founder . The early Republic . The Triad had a powerful voice on Coruscant in the early years of the Galactic Republic , with the Prajii having the most influence . During the Alsakan Conflicts , Kaikielius sided with Coruscant , and House Juoni lost virtually all of its power after it sided with Alsakan during the First Alsakan Conflict of 17 , 000 BBY : its Expansion Region holdings were destroyed by orbital bombardment , and Kaikielius was left to the control of the Prajii and the Vahalii . Kaikielius slowly faded from galactic political importance in the years after the Corellian Interregnal and its colonies became full Republic members in their own right . From 11 , 000 BBY it rivalled with Koros for influence in the Core Worlds , but infighting in the Koros system , and between the Great Houses on Kaikielius , prevented either from gaining an advantage . In 5000 BBY , however , the nine planets of the Koros system were unified by Empress Teta , and she subsequently gained much favor with Coruscant for her actions in repelling the Sith Empire during the Great Hyperspace War . Kaikielius suffered an attack by Naga Sadow ' s fleet in this war , and within a hundred years of the war ' s conclusion , Koros had eclipsed it in power and influence . Decline . In a frantic attempt to compete with Koros , Kaikielius underwent rapid urbanization , which devastated the countryside and left ancient city cores neglected , decayed and abandoned . Wealthy citizens abandoned the city centers in favor of the exurbs or left the planet altogether . Corrupt Neimoidian developers and Hutt criminal cartels moved into the poverty - stricken city centers , while mayors walled off the city cores and cut off utilities in a desperate effort to contain crime and poverty . Kaikielius ' ring - cities became infamous as the city cores were abandoned to anarchy while construction continued to expand in concentric rings of development . Kaikielius suffered devastating groundquakes during the Quake Years around 4800 BBY , after which House Praji decamped to Coruscant , leaving rule of the increasingly - ungovernable planet to House Vahali . The Vahalii soon dominated all aspects of Kaikielius ' government , but the system was effectively under the control of Hutt " kajidics " and became a haven for pirates : the approach to the Kaikielius system on the Koros Trunk Line became known as " Butcher ' s Alley " for the death toll . The Prajii were content to let their rivals destroy themselves before they moved in to pick up the pieces . Indeed , Emppu Praji - Barck , who served as a Republic Minister of State for sixty years , continually filibustered Senate debates on intervention in the Kaikielius system . Recovery . It was not until 4225 BBY that the Jedi Order on Ossus sent a task force to end the Hutt ' s domination over the planet : the Republic had discovered that the Odominic " kajidic " had been supplying weapons to both sides in the war between gangs and police on Kaikielius . Now a matter of Republic security rather than one of law enforcement , the planet ' s criminal elements were ousted through the military might of a joint Republic - Jedi expedition known as the Kaikieli Reconquista . The Jedi Padawan Derrica Praji was one of the commanders of the expedition , to the fury of his relatives . During the course of the Reconquista , Derrica discovered evidence in Kesipli that his great - aunt , Emppu Praji - Barck , had committed sedition in urging the Odominic to supply both sides of the gang war . For the sake of his family , Derrica chose to destroy the evidence , though House Praji ' s objective of seizing sole power on Kaikielius had come to naught . In the aftermath of the Reconquista , Kaikielius was rebuilt with Republic aid , becoming a prosperous , " cookie - cutter suburb " to Coruscant ' s urban center . The Prajii left the Vahalii to rule Kaikielius while they further solidified power on Coruscant . Over the millennia , Kaikielius was attacked by Exar Kun in the Great Sith War ; again by the Sith Emperor during the Great Galactic War ; and by Skere Kaan during the New Sith Wars , all seeking to claim the approach to Coruscant . The Clone Wars . The Separatist General Grievous managed to take the world as part of Operation Durge ' s Lance during the Clone Wars . A historical footnote to the Kaikielius campaign was the curious case of the " Mad Clone of Kaikielius " , an aberrant clone trooper who suddenly went berserk during the battle and turned his blaster on his squadmates , who he later insisted had been replaced by Separatist battle droids . Refugees from Kaikielius displaced by the Separatist invasion were resettled on Byss in the Deep Core . Nominally a recolonization effort , the planet in fact became the secret retreat for Emperor Palpatine and his Dark Side Elite under the Galactic Empire , and the colonists were slowly drained of their life energies to sustain the Emperor and his adepts . The Galactic Civil War and after . Following the Battle of Endor in 4 ABY and the formation of the New Republic , Kaikielius surrendered to Gial Ackbar ' s fleet as it entered the Core Worlds in 6 ABY in preparation for the Coruscant campaign . In 10 ABY , Kaikielius was attacked by Imperial forces led by Commander Nahdonnis Praji , advancing out of the Deep Core as part of the Reborn Emperor ' s reconquest . House Vahali ' s skyhook was destroyed by Praji ' s fleet and he placed the planet under martial law . This battle , along with a strike against Metellos , persuaded the leaders of the New Republic that they could not hold the capital on Coruscant . The New Republic ' s command staff abandoned the galactic capital for the Outer Rim . The clone Emperor appointed Praji Governor - General of the world . Soon after , commanders loyal to the Imperial Ruling Council recaptured Coruscant , but disagreements between commanders sparked the bloody Imperial Civil War , laying much of the capital to waste . Nahdonnis Praji , convinced that the Reborn Emperor had succumbed to delusions of grandeur , requested Kaikielius as a personal fief and left the Imperial Military , restoring House Praji ' s ancient connection to the planet . During the Yuuzhan Vong War , Kaikielius was invaded by Yuuzhan Vong forces . The Praji Estate on Coruscant was destroyed when the Yuuzhan Vong captured the planet , and in the aftermath of the war House Praji relocated their holdings to Kaikielius , returning to their homeworld . Inhabitants . Kaikielius ' Human inhabitants were known as the Kaikielii . The planet was traditionally ruled by an aristocracy of Great House s , of whom the greatest were the Triad of House Juoni , House Praji , and House Vahali , with many minor houses vying for power around them . Of the Triad , only House Praji achieved galactic importance , becoming a prominent political and bank ing family on Coruscant , with members in the Bank of the Core , the Coruscant Ministry of Ingress , and one member even becoming a Minister of State . Of the other two Houses , the Juonii went extinct shortly after losing all their power in the First Alsakan Conflict . The Vahalii went on to control Kaikielius after the Prajii fled after the Quake Years , and became the sole power on the planet in the aftermath of the Kaikieli Reconquista . Their space stations were destroyed by Nahdonnis Praji ' s fleet during the Galactic Civil War and they were forced to flee into space . The Vahalii later re - established themselves on Denon .