Skirmish on Krownest A skirmish on Krownest occurred in 2 BBY between members of the rebellion , the Mandalorian Clan Wren , and Imperial Super Commandos led by Mandalorian Viceroy Gar Saxon . The brief battle took place during a mission by Mandalorian warrior and rebel Sabine Wren , Jedi Knight Kanan Jarrus , and Padawan Ezra Bridger to recruit Clan Wren into the rebellion . Ursa Wren , Sabine ' s mother and leader of the clan , initially turned the rebels over to Viceroy Saxon , but Saxon declared Clan Wren traitors and sparked a battle between the clan and his Super Commandos . The contingent of Super Commandos were defeated , and Sabine bested Saxon in single combat . Following Saxon ' s death , at the hands of Ursa , Sabine remained with her family to help Clan Wren reunite the Mandalorian people , using the Darksaber she held in her possession as an ancient symbol of Mandalorian unity . Prelude . During the Age of the Empire , Clan Wren was one of the important Mandalorian clans that answered to Gar Saxon , the Viceroy of Mandalore who ruled his people on behalf of the Galactic Empire . After learning that the Empire was building weapons used to subjugate the Mandalorian people , the Imperial cadet Sabine Wren spoke up against the Empire . When her family failed to support her , Sabine ran away from the Imperial Academy of Mandalore and later joined the Spectres rebel cell , which was part of a larger rebellion against the Empire . Sabine ' s actions undermined the standing of her family with Viceroy Saxon . In retaliation , Saxon detained Sabine ' s father as a hostage on Mandalore . He also conscripted Sabine ' s older brother Tristan Wren into his Imperial Super Commando s . Sabine ' s mother Ursa Wren was allowed to continue ruling over the Wren Stronghold on Krownest in return for her and her family ' s fealty to Saxon . For years , Ursa did not search for her daughter in order to avoid endangering Sabine . In 2 BBY , Saxon attempted to impress Sabine into his service on the third moon of Concord Dawn . However , she defied him and escaped with the help of the Spectres and the former Protectors ' leader Fenn Rau . Later that year , Sabine obtained the Darksaber , an ancient lightsaber , on Dathomir . At the urging of the Jedi Knight Kanan Jarrus and Fenn , Sabine agreed to learn how to wield the Darksaber so that she could win the Mandalorians over to the rebellion . The skirmish . Homecoming . Sabine and her fellow Spectres Kanan , Ezra Bridger , Chopper along with Fenn Rau traveled on the " Phantom II " shuttle to the snowy forested planet of Krownest . Upon entering Krownest ' s atmosphere , Sabine attempted to contact her family but found her communications being jammed . The " Phantom II " came under attack from a squadron of Clan Wren warriors led by Sabine ' s brother Tristan . Tristan ' s warriors damaged the " Phantom II " main thrusters , forcing Sabine to crash the shuttle on the snow . After landing , Sabine along with Ezra and Kanan went to greet the Mandalorians while Fenn hid inside the ship with Chopper . Shortly later , Tristan and his men arrived . A brief firefight ensued when Ezra ignited his green lightsaber . However , Tristan ordered a ceasefire after recognizing Sabine ' s voice . After exchanging pleasantries , Tristan escorted the visitors to the Wren stronghold where Ursa Wren was waiting . Ursa was initially displeased to see her daughter Sabine and ordered her warriors to detain the visitors . However , Sabine convinced her mother that they need to talk and showed her the Darksaber . Ursa reluctantly agreed to grant Sabine and the Jedi an audience but ordered them to surrender their weapons . Once inside , Ursa briefed her daughter about the gravity of her past actions and stressed the importance of preserving Clan Wren . Following an argument about the Protectors , Ursa summoned her daughter for a private meeting . In private , Ursa chastised Sabine for endangering her father and their family ' s fortunes . She also questioned Sabine ' s claim to the Darksaber because she had not taken it from Maul by besting him in combat . Ursa also refused her daughter ' s request to aid the rebellion , fearing the retribution of the Empire . Sabine in return criticized her mother for siding with the Empire and Saxon and putting politics above family . The conversation was interrupted by a hologram meeting between Ursa and Viceroy Saxon . While Ursa conferred with Saxon , Sabine and her brother Tristan sparred for recreation . From foes to allies . In private , Viceroy Saxon informed Ursa that he would be coming to apprehend the Jedi Kanan and Ezra . He also promised to " take care " of Ursa ' s family . Unknown to Ursa and Saxon , they were being spied upon by Fenn Rau , who subsequently recovered Kanan and Ezra ' s weapons . Kanan then requested an audience with Ursa Wren to discuss a possible alliance between Clan Wren and the rebellion . Fearing trouble with Saxon and the Empire , she turned down Kanan ' s requests . Ursa was even more troubled to learn from Ezra that Sabine had fought with Saxon earlier . She then apologized for having to turn them over to Saxon . Shortly later , Saxon arrived with his Super Commandos and proceeded to take Kanan and Ezra into custody . Sabine tried to intervene Saxon revealed that Ursa had made a bargain with him in order to protect Sabine . Ursa then demanded that Saxon uphold his side of the bargain but the Viceroy decided to exterminate Clan Wren for consorting with the enemy . Before Saxon could order his men to attack the Wrens , Fenn Rau burst into the throneroom with his jetpack and threw the lightsabers to their Jedi owners . A battle ensued and the Wrens managed to defeat Saxon ' s Super Commandos with the help of the Jedi and Fenn . Sabine then took on Saxon in a lightsaber duel . After blasting their way out of the stronghold , the two landed on a nearby ice lake and parried with their blades . Sabine borrowed Ezra ' s lightsaber while Saxon wielded the Darksaber . During the fight , Saxon flew his jetpack and attempted to shoot Sabine . Sabine deflected his blows with her small portable shield and managed to damage his jetpack , forcing Saxon to fight on the ground . After parrying with their blades for a second round , Sabine managed to knock the Darksaber out of his hand . She then held the Darksaber and Ezra ' s lightsaber above Saxon ' s neck and demanded that he yield . Refusing to surrender to Sabine , Saxon demanded that she execute him per the Mandalorian tradition . However , Sabine refused to strike him down since she no longer believed in striking down unarmed opponents . Saxon then tried to shoot her but Ursa shot Saxon in the chest , killing the Viceroy . Aftermath . The Mission to Krownest succeeded in helping Sabine to begin rebuilding ties with her estranged mother Ursa and brother Tristan . While Sabine decided to stay behind with her family to help reunify the Mandalorians , the rebellion gained a tentative ally in the form of Clan Wren . Fenn Rau also decided to stay behind with his Mandalorian brethren to help Sabine and Clan Wren . Meanwhile , the other Spectres departed Krownest on the " Phantom II " . Gar Saxon ' s death created a power vacuum in Mandalorian society . Sabine and Fenn hoped to reunify the Mandalorians and ally them with the rebellion . However , Sabine did not believe that she was the leader that Mandalore needed and vowed to help find Mandalore ' s true leader . Following the death of Gar Saxon ' s brother and successor Tiber Saxon , Sabine passed the Darksaber to Bo - Katan Kryze . Behind the scenes . The Mission to Krownest forms the main plot element of the " Star Wars Rebels " episode " Legacy of Mandalore " , which premiered on Disney XD on February 18 , 2017 . It introduced Sabine ' s brother Tristan Wren and her mother Ursa Wren .