Sixth Brother The Sixth Brother was a male member of the Inquisitorius . In the year following the end of the Clone Wars , the Sixth Brother , and the rest of the Inquisitors , hunted for Force - sensitive children as well as Jedi who survived Order 66 . He was killed by Ahsoka Tano during the uprising on Raada . Biography . Fallen Jedi . The individual who became known as Sixth Brother was originally a member of the Jedi Order . At some point after the Galactic Republic was reorganized into the Galactic Empire , he was inducted into an Imperial agency of Force - sensitive assassins called the Inquisitorius , which was tasked with hunting down and eliminating any Jedi who survived Order 66 . To accomplish this , he and his colleagues were trained by The Grand Inquisitor in their training center in the Works , but soon fell under the command of Darth Vader when Darth Sidious first demonstrated the Inquisitorius to Vader , who continued their training in the ways of the dark side of the Force . Age of the Empire . Training under Vader . Vader came to train them in an attempt to eliminate the more defensive strategy they earned in their time with the Jedi . The Sixth Brother faced off with Vader in a training session and the Sith Lord cut off his lower left arm to teach him the lesson of loss and intended to make their fighting technique more aggressive . Mission to Mon Cala . In 18 BBY , the Sixth Brother , Ninth Sister and Tenth Brother accompanied Vader to Mon Cala on a mission to search for a rumoured Jedi who had been advising the King of Mon Cala in negotiations with the Empire . Upon arrival , the Tenth Brother described the planet as smelling like fish and the Ninth Sister claimed it was merely Sixth Brother . Sixth Brother sarcastically complemented it and Ninth Sister stepped down to speak with the King ' s chief of security Gial Ackbar . Vader came down to take over from Ninth Sister and an Imperial shuttle exploded nearby . Vader took the three Inquisitors into Dac City to begin their search . Investigating Force - sensitives . Sometime later , the Sixth Brother intercepted surveillance holos and reports indicating that there was a Force - sensitive child on the planet Thabeska . He went to the Outer Rim world to investigate , but was unable to locate the child . While on Thabeska , the Brother received a message from a low - level district commander on the moon of Raada . The report indicated that a Force - sensitive being , old enough to have received Jedi training , was active on the backwater moon . The Brother then proceeded to close his file on the child on Thabeska and head to Raada to investigate a possible Jedi . Hunting Ahsoka Tano . The Sixth Brother traveled to Raada to hunt down the Jedi spotted on the small agricultural moon . He learned from Jenneth Pilar , an information broker working with the Empire on the moon , that a Jedi or Padawan had been involved in an uprising by the local farm ing community . During the uprising , teenage farm worker Kaeden Larte had been captured and torture d for information . The Brother scoffed at the techniques used on Larte , which proved ineffective . He learned that Kaeden was then broken out of the Imperial base by a Force - sensitive being . The Brother tracked down Kaeden and the other farm workers , who had hidden in a set of mountain cave s not far the settlement . Kaeden surrendered herself to the Inquisitor , but her friends soon attacked him . The Brother deflected the blaster bolts shot by the farmers , killing them . As a show of strength , the Brother threw his lightsaber at the Rodian farmer , Kolvin , who was instantly cut in half . To lure the Jedi back to Raada , the Brother had footage of himself holding Kaeden prisoner leaked . Upon seeing it , Ahsoka Tano returned to Raada , having arranged for the evacuation of the moon ' s population . She was in the process of building a new pair of lightsabers , and heard the kyber crystal s in the Brother ' s double - bladed lightsaber sing to her . During her battle with the Brother , Tano used the Force to pull the crystals from his lightsaber . The lightsaber became unstable and exploded , killing the Sixth Brother . Personality and traits . The Sixth Brother was of a species which neither Kaeden Larte or Ahsoka Tano were able to identify . He was described as tall with unnatural - looking gray skin , piercing ice - blue eyes , broad shoulders , and scar - like uniform markings on his cheeks , nose , and chin . Like his fellow Inquisitors , he wore an armored black and grey bodysuit and carried a double - bladed spinning lightsaber . He also wore a helmet with a blast shield that could be lowered to protect his face . The Sixth Brother demonstrated a vicious and ruthless personality , being completely comfortable with the idea of killing innocent beings - even children - and detesting the aspects of his mission that prevented him from acting in such a matter . He was also known to have relished the idea of facing more challenging prey and feared competition from his fellow Inquisitors . He was also arrogant , claiming himself to be " the future " and displaying overconfidence during his fight with Ahsoka Tano , which ultimately led to his demise . Powers and abilities . The Sixth Brother showed very little in the way of his powers and abilities during his hunt for a Force - sensitive child on Thabeska , as well as his confrontation with Ahsoka Tano . Tano described him as " lacking finesse " and " relying mostly on brute strength , " as well as being apparently unable to fight with his helmet ' s blast shield down . Despite this , he was competent with an Inquisitor ' s lightsaber , being able to both deflect blaster bolts back at their firers and throw his saber in order to chop Kolvin in half . Behind the scenes . The Sixth Brother first appeared as the primary antagonist of the novel " Ahsoka " . He was first pictured in " " , the sixth issue of the comic series " " .