Skirmish aboard a Republic medical station During the early days of rebellion against the Galactic Empire , members of the Lothal rebel cell engaged in a skirmish against two Imperial Inquisitors aboard an abandoned Galactic Republic " Haven " - class medical station . Following a protracted struggle , the Spectres managed to escape and warn their fellow rebels that the Empire had more Inquisitors . Prelude . After Darth Vader learned that Anakin Skywalker ' s former Jedi Padawan Ahsoka Tano still lived and the Spectres narrowly escaped an Imperial trap , Darth Sidious counseled his Sith apprentice to send another Inquisitor to hunt down the rebels . While the Spectres believed that the Grand Inquisitor was the only one they had encountered , the Empire had several other Inquisitors . Several Inquisitors including the Fifth Brother and the Seventh Sister began scouring the galaxy for the Jedi Kanan Jarrus and his apprentice Ezra Bridger . With the help of the former Clone Captain Rex , the Phoenix Cell gained access to a list of abandoned Republic bases and military installations scattered across the Outer Rim Territories and Mandalore . The Spectres ' leader Hera Syndulla sent several of her crew members Sabine Wren , Garazeb Orrelios , and Chopper on a mission to salvage supplies from an abaonded Republic " Haven " - class medical station . Seeking a break from his Jedi routine , Ezra decided to accompany the other rebels on the salvaging mission . Mission to the medical station . The trap . The four Spectres traveled to the medical station in the auxiliary ship " Phantom " . Using Rex ' s military codes , they managed to dock in the abandoned space station . To aid their salvaging , the astromech droid Chopper activated the station ' s powerplant . This power surge was detected by a nearby Imperial Star Destroyer that was commanded by the Fifth Brother . The Fifth Brother ventured to the station to investigate . While Chopper stayed in the command center to repair the files , the other rebels went to explore the space station . Unknown to the rebels , they were being watched by an ID9 seeker droid belonging to the Seventh Sister , who had set a trap for them . The seeker droid managed to lure Chopper into a trap and electrocute him . Despite being incapacitated , Chopper managed to send a distress transmission to the other three rebels . In an attempt to reach him , Ezra and Sabine climbed up a ventilation shaft . Zeb tried to follow but got stuck . Upon reaching upstairs , the two rebels encountered the Seventh Sister and one of her seeker droids . The Inquisitor quickly bested the two rebels and forced them to flee . While fleeing down a corridor , the two rebels bumped into the Fifth Brother . Ezra and Sabine managed to loosen a shut door . While Sabine managed to flee , Ezra stayed behind to shut the door and save his friend . He was quickly taken prisoner by the two Inquisitors and the seeker droids . The Fifth Brother attempted to execute Ezra but was restrained by the Seventh Sister , who pointed out that Ezra could lead them to the other rebels . While she interrogated Ezra , the Fifth Brother was tasked with hunting down Sabine . Escaping the Inquisitors . Sabine later managed to find Zeb and pull him out of the ventilation shaft . When Zeb suggested contacting Kanan , Sabine counseled against it since this would compromise the rebel fleet to the Empire . While Ezra held out against the Seventh Sister who took an interest in Ahsoka Tano , Sabine and Zeb tried to stop the Fifth Brother . They lured him into a room and planted several thermal detonator s on the floor . Sabine attempted to trigger the detonators but they refused to go off . Using the Force , the Fifth Brother hurled the thermal detonators at the two rebels . Both Sabine and Zeb survived the explosion but Sabine was knocked out by the blast . Zeb managed to flee but Sabine was taken prisoner by the Fifth Brother , who carried her back to join the Seventh Sister and Ezra . Zeb managed to outwit and destroy the seeker droids . After finding the medical supplies , Zeb encountered Chopper . Together the two of them headed back to the " Phantom " but Zeb refused to abandon his fellow rebels to the Inquisitors . Despite being unable to match the Inquisitor ' s Force powers , he came up with a plan to rescue Ezra and Sabine . Posing as " Commander Meiloorun " , Zeb contacted Ezra and Sabine ; who had refused the Inquisitors ' demands that they contact the rebel fleet . They only gave in once the Fifth Brother threatened Sabine . Claiming that they needed help , Sabine told Zeb that they would come out and meet them in the hangar bay . Before ending communication , Zeb told the two rebels to " keep their chins up " ; a coded message to look above . Seeking an opportunity to capture Ahsoka and Kanan Jarrus , the Inquisitors led their captives to Bay Six . Upon arriving there , they spotted Zeb and Chopper in the " Phantom " , which was hanging upside down on the ceiling . When the Inquisitors spotted the " Phantom " , Zeb brought the ship down and opened the rear hatch , allowing Ezra and Sabine to board . The rebels then attempted to flee into space but the two Inquisitors used their Force powers to grab the ship . With much difficulty , Zeb managed to break the ship away and flee through the blast door before it closed . Aftermath . The medical supplies that the Spectres recovered from the Republic medical station boosted the Phoenix Squadron ' s meager resources . Despite their escape , the rebels were troubled by the revelation that more Inquisitors existed . The Spectres would continue to encounter the Inquisitors on several occasions including a rescue mission on the planet Takobo , the Imperial assault on Garel , a duel on Oosalon , and a showdown on the planet Malachor . Behind the scenes . The skirmish aboard a Republic medical station first appeared in the " Star Wars Rebels " episode " Always Two There Are " , which debuted on Disney XD on October 28 , 2015 . The episode also introduced a new antagonist in the form of the Inquisitor known as the Seventh Sister ; who was voiced by Sarah Michelle Gellar , the wife of Freddie Prinze Jr . ( who voices Kanan Jarrus ) .