EVS Construction Droid The EVS construction droid , or urban renewal droid , was a massive automated factory used on overdeveloped urban worlds like Coruscant and Bonadan for demolition and reconstruction of entire city blocks . It would tear down old , decrepit buildings and transform them into newer structures . Description . The EVS stood at forty stories and was nearly the size of a skyscraper . It walked on two massive hydraulic legs with a smaller rear hydraulic leg to support it . In a detailed construction project , an EVS construction droid moved a single step forward every half an hour , though it could move much faster during razing projects . Its head was covered in demolition optic clusters , which scanned the structure in front of it , analyzing the weak points and comparing the architecture to master blueprints kept within its computer core . Its two heavy shovel arms were used to demolish unneeded structures . The useful wreckage was then scooped into a mouth located underneath its cylindrical battering ram for recycling , while undesired rubble was placed into storage hoppers for disposal . An EVS unit had hundreds of retractable smaller limbs beneath its chassis , which featured specialized demolition devices , including implosion wrecking balls , plasma cutters , collector trowels , debris nets , and electrical claws . Within the EVS construction droid ' s processor mouth , the debris was carried by a conveyer belt into internal molecular furnace s , smelting pods , and an atomic incinerator where useful items were extracted and recycled . Raw materials were also separated and taken to a corresponding factory , which extruded new girders , transparisteel sheets , and blocks of compressed duracrete . These materials were then ejected via the rear of the EVS construction droid and assembled into polished new constructs by hundreds of fabricating arms . The intense heat generated by its internal factories was vented through discharge stacks ; the heat was so intense that an EVS unit emitted a faint glow under dark lighting . The EVS was piloted by an outdated integrated droid brain , which took nearly three days to reprogram and reinitialize once interrupted . Thus , a small skeleton crew was assigned to an EVS unit to supervise the droid and make sure such shutdowns were not a frequent occurrence . They resided within a small command cabin located in its head , and their airspeeders were parked at a small dorsal landing pad . Operational history . Such droids were created and design by scientists commissioned by Emperor Palpatine for Coruscant during his reign over the galaxy . In 6 . 5 ABY , during the New Republic ' s attempt to retake the planet , members of the elite Rogue Squadron under Wedge Antilles hijacked unit EVS - 469 and used it to transport them to a subsidiary computer center , where they sabotaged the planetary defensive shields , thus helping in the New Republic efforts to capture the planet . Later , construction droids were used to rebuild damaged portions of the planet . During this time , EVS - 6962 uncovered a hidden Imperial interrogation center during a routine tear - down assignment under Wedge Antilles . During the Yuuzhan Vong occupation of Coruscant , a construction droid was harnessed by Irek Ismaren to reach the Jedi Temple .