Boomer ( astromech droid ) Boomer was an R5 astromech droid belonging to Sevox , a human on the planet Andelm IV . During a mission underwent by the human girl Zarro and the Wookiee Chewbacca , the two placed a thermal detonator inside the droid and named it " Boomer , " intending to detonate it aboard a " Lambda " - class shuttle . The duo succeeded in their plan , and Boomer was destroyed . Biography . Boomer was a derelict R5 astromech droid who ended up in the tinkerer Sevox ' s bunker on the planet Andelm IV shortly after the Battle of Yavin . While on a mission to stop the local gangster Jaum from exporting dedlanite to the Galactic Empire , Zarro and her Wookiee friend Chewbacca visited Sevox ' s bunker . While exploring Sevox ' s storeroom , Chewie found a derelict R5 droid . Chewbacca managed to rebuild the droid and fitted it with several thermal detonator s before slotting its head back on . Boomer traveled with Zarro and Chewie on Jaum ' s landspeeder to the Andelm IV spaceport . After Jaum and his droid I - 7 had left , the droid and its " masters " infiltrated the spaceport . Zarro was able to get through the scout trooper s outside by posing as one of Jaum ' s henchmen delivering Chewie , who was disguised as Jaum ' s new war droid . Once inside , Zarro planned to load Boomer onto a " Sentinel " - class landing craft containing Jaum ' s dedlanite shipment . However , they were stopped by Jaum who demanded that Zarro remove her helmet . A gun battle quickly ensued between Chewie and the stormtrooper s assisting Jaum . Using a remote control , Zarro sent Boomer up the landing craft ' s gangplank . On the way , the droid was hit by laser fire and disabled . While Chewie flight with Jaum ' s enforcer Tyvak and an All Terrain Scout Transport , Zarro managed to push Boomer onto the craft . With the droid ' s remote fried , she activated a timer and fled the ship . Believing he had beaten Zarro and Chewie , Jaum escaped on the landing craft ; unaware that the bomb - laden Boomer was aboard . Before Zarro and Chewie could leave the spaceport , they were apprehended by scout troopers and brought aboard Commander Kai ' s Imperial - class Star Destroyer . After overpowering their stormtrooper captors , they managed to make their way to the Star Destroyer ' s hangar and gain an audience with Commander Kai . Zarro managed to convince Kai that Jaum was a fraudster and rebel spy . She also claimed that Jaum had crammed Boomer with explosives and planted it on the landing craft docking in the Star Destroyer ' s hangar . Shortly later , the droid exploded , destroying the landing craft and damaging the Star Destroyer ' s hangar bay . Following Boomer ' s destruction , Zarro and Chewie fled back to Andelm IV on a TIE / sa bomber . Meanwhile , Kai arrested Jaum and had him torture d as retribution for the " scam " and damaging his Star Destroyer . Thus , Boomer helped foil Jaum ' s plot to establish a business exporting dedlanite to the Empire and ended Jaum ' s crime syndicate . Personality and traits . Boomer was a broken - down R5 repair droid who was rebuilt by Chewbacca and Zarro for the sole purpose of stopping the gangster Jaum ' s plot to export dedlanite to the Galactic Empire . He had no personality and was controlled remotely by Zarro . As an astromech droid , he had a rotating head built over a rounded chassis . He also had two wheeled legs . Chewbacca managed to cobble enough spareparts from Sevox ' s storeroom to restore the droid to some operation capacity . However , Boomer lacked any autonomy and was effectively used as a weapon by his new " owners . " In its last operation days , Zarro nicknamed the droid Boomer and fitted him with several explosives . Behind the scenes . Boomer first appeared in " Chewbacca , Part IV " and was featured on its cover .