Atollon Atollon was a remote planet in the Lothal sector of the Outer Rim Territories . It was known to the ancient peoples of the sector and was depicted in their artwork . The only known inhabitant was the Bendu , a mysterious Force wielder . In the third year before the Battle of Yavin , the rebels of Phoenix Cell established a base there after receiving intel from rebel astromech Chopper and AP - 5 , an inventory droid formerly in service to the Empire . Eventually , the rebels were forced to flee the planet after Grand Admiral Thrawn located their base and launched an attack which destroyed Chopper Base and killed many of the rebels . Geography . Atollon was located in an uncharted region in the Lothal sector of the galaxy ' s Outer Rim Territories , off a major hyperspace route . The planet had a breathable atmosphere , but a hot climate . Despite the dry weather on the rocky surface , which was covered in plated tree coral s , the planet featured a fresh water source deep underground . The planet had cave rns which served as hives to the giant krykna spider s . Atollon was also home to other creatures , such as the convor ee and dokma . The planet ' s wilderness was also the domain of a powerful being of the Force called the Bendu , who saw himself as the balance between the light and dark sides of the Force . History . Atollon was depicted in the artwork of the ancient people of the Lothal sector but did not appear on the Empire ' s starcharts . In the wake of the near - destruction of Phoenix Cell during many battles , the early rebellion against the Empire faced a shortage of bases for their forces . In 3 BBY , the rebels found Atollon by cross - referencing rebel data with the Imperial network , provided by AP - 5 and the astromech droid Chopper , and successfully established Chopper Base . After the sudden disappearance of rebel Lieutenant Dicer , they found out that one of the planet ' s native creatures was the krykna , a giant spider - like predator . Eventually , they managed to ensure the base ' s protection using sensor markers as a fence . Later , the former Jedi Ahsoka Tano traveled to Atollon to meet up with Jedi Knight Kanan Jarrus , his Padawan Ezra Bridger , and Chopper prior to their departure on a mission to Malachor . After returning from their mission to Malachor , the blinded Kanan , along with Ezra and Chopper , were greeted by their fellow rebels , Rex , AP - 5 , and Commander Jun Sato . In 2 BBY , Atollon continued to host Chopper Base . While Kanan stayed behind to meditate in the Force , Ezra assumed a greater leadership role among Hera Syndulla ' s rebel cell and led a successful mission to rescue Hondo Ohnaka , a Weequay pirate who supplied Phoenix Squadron with information about the Imperial starfighter reclamation plant Reklam Station . While Ezra led a recon mission there , Kanan encountered the Bendu , who taught him to overcome his fear of the krykna and repair his connection to the Force . Kanan also left the Sith Holocron that Ezra had obtained on Malachor in Bendu ' s care . After the former Sith Maul kidnapped Hera and the other " Ghost " crew , Kanan and Ezra traveled on a speeder bike into Atollon ' s wilderness to find the Bendu and retrieve the Sith Holocron . There , they told Bendu that Maul planned to combine the Sith Holocron with Kanan ' s Jedi Holocron . The Bendu counseled Ezra and Kanan that doing so would provide clarity but could lead to chaos . Nevertheless , he allowed Ezra to retrieve the Sith Holocron from an underground cave full of krykna . With the help of Kanan , Ezra overcame his fear of the giant spiders and together the two retrieved the Holocron . Later , the Spectres , Rex , and Commander Sato attended a briefing at Chopper Base to discuss a mission to rescue several cadets from the Imperial Skystrike Academy who wanted to defect . The Mandalorian weapons expert Sabine Wren was assigned the mission . After rescuing the cadets , Sabine , along with Wedge Antilles and Derek Klivian , arrived at Chopper Base where they were welcomed by Commander Sato . After evacuating rebel dissidents and the rebel cell Iron Squadron from the planet Mykapo , Commander Sato had an emotional reunion with his nephew Mart Mattin at Chopper Base . Later , Hera , Sabine , Zeb , and Commander Sato remained at Chopper Base while Ezra , Kanan , and Chopper undertook a mission to infiltrate the Imperial Armory Complex on Lothal with Ryder Azadi ' s rebel cell . Ezra ' s team and Ryder corresponded via hologram throughout the mission . As a result of the mission , the Phoenix rebels learned that Grand Admiral Thrawn was developing a new starfighter initiative and that the Imperial Security Bureau Agent Kallus had become a rebel informant . Using the information obtained by Ezra and Chopper , Hera began preparations for a recon mission , as part of the preparations for Phoenix Squadron ' s planned strike on Lothal ' s Imperial factories . Before they could proceed with the mission , Ezra succumbed to a dark side attack by Maul . While Hera left for Lothal , Ezra , Kanan , and Sabine stayed behind to deal with Maul . Ezra and Kanan encountered Maul in the wilderness after going to speak with the Bendu . Ezra agreed to travel with Maul to the planet Dathomir after Maul threatened to activate a homing beacon that would alert the Empire to Chopper Base . Later , the E - XD infiltrator droid EXD - 9 discovered the planet Atollon and Chopper Base . Before it could alert the Empire to the presence of Chopper Base , EXD - 9 was overpowered and deactivated by Zeb , Chopper , and AP - 5 . The rebels then reprogrammed it into a bomb which destroyed an Imperial Star Destroyer . Despite this setback for the Empire , Thrawn managed to narrow his search for the Phoenix rebel base to 94 systems . After a reluctant Sabine agreed to learn how to wield the Darksaber in order to gain leadership over the Mandalorian people , Kanan and Ezra took her into Atollon ' s wilderness to train her . Over several days , Sabine managed to overcome her own self - doubt and fears . Her rebel comrades , including Fenn Rau , then vowed to support her mission to rally the Mandalorians over to the rebel cause . During an undercover mission to rescue the rogue ISB Agent Kallus , Chopper deleted Atollon from Grand Admiral Thrawn ' s star chart aboard the Star Destroyer " Chimaera " . Later , several members of Phoenix Squadron witnessed former Imperial Senator and rebel leader Mon Mothma ' s HoloNet speech announcing the formation of the Alliance to Restore the Republic . Following a rebel mission to Killun Station , Imperial slicer s hijacked Chopper in an attempt to find the location of the rebel base on Atollon . Their plot was foiled by Chopper ' s rebel comrades , who restored Chopper ' s original programming and transmitted a data surge which destroyed the slicer ' s " Gozanti " - class cruiser . After receiving messages from Kanan ' s Jedi Holocron and the Malachor Sith Holocron hinting that Jedi Master Obi - Wan Kenobi ' s life was in danger , Ezra stole an RZ - 1T trainer and traveled to Tatooine . He and Chopper returned to Atollon after Kenobi defeated Maul in combat . Thrawn was able to find the base shortly after he and his death troopers exposed and captured Agent Kallus , who was " Fulcrum . " With Kallus ' transmissions , the course for General Jan Dodonna ' s forces , and ancient Lothal sector artwork , Thrawn was able to discover the planet . Soon after , a battle ensued on and above the planet between the Galactic Empire and the Rebel Alliance . Towards the end of the battle , after being enraged by Kanan calling him a coward , the Bendu transformed into a storm and attacked the Imperials and Rebels before being subdued when Grand Admiral Thrawn had his AT - ATs shoot the Force - wielder down . The battle ended with an Imperial victory and saw the destruction of Chopper Base and Phoenix Squadron . Behind the scenes . Atollon first appeared in the " Star Wars Rebels " late season 2 episode " The Forgotten Droid " . It was first identified in the episode ' s trivia gallery , but was not named on - screen until the third - season episode " Iron Squadron " .