C - 21 Highsinger C - 21 Highsinger was a droid bounty hunter that operated during the Clone Wars . He was part of a syndicate of bounty hunters that included Boba Fett , Latts Razzi , Dengar , Bossk , and Oked . He had extensive modifications , including precision - engineered servomotor s and manipulators . Although a deadly combat droid , C - 21 Highsinger had his battle programming pushed beyond its limits when defending Otua Blank ' s subtram from the swift Kage Warriors . Biography . The Clone Wars . Safe cargo objective . During the Clone Wars , Highsinger joined a group of bounty hunter s put together by Boba Fett in order to undertake a mission on the planet of Quarzite . The hunters were joined by Asajj Ventress — although they were unaware of her identity — after she killed one of the members of their team . The group was tasked with guarding a large wooden chest aboard a subtram , which was to be delivered to the Belugan Otua Blank . Though the trip began easily enough , soon the tram was beset by Kage Warriors , who sought the cargo for themselves . One by one , the hunters fell . Though Highsinger was one of the last hunters standing , the Warriors ' leader , Krismo Sodi was able to dispatch the droid by linking him with fellow hunter Latts Razzi as she was thrown from the train . Highsinger fell beside Razzi , though both survived . In his absence , Fett too was bested by Sodi , who soon revealed that the cargo was his sister , Pluma Sodi , who was to be forcibly wed to Blank . Ventress , having suffered many changes in her recent past , ended up placing Fett within the chest and delivering him to Blank , collecting both a bounty from the warlord as well as from the Kage Warriors for freeing Pluma . She then shared the first bounty with Highsinger and the others , telling them that Fett would join them soon enough . Mission to Serenno . In the second year of the Clone Wars , Highsinger and several other members of Boba Fett ' s syndicate including Latts Razzi , Embo , and Fett himself were frequenting a bar in Coruscant ' s Level 1313 when they were visited by the undercover Jedi Master Quinlan Vos . Vos had been dispatched by the Jedi High Council on a mission to assassinate the Separatist leader Count Dooku and had been partnered up with Asajj Ventress , a Dathomirian Nightsister who had once been Dooku ' s Sith apprentice . Fett informed Vos that Ventress was hunting a Volpai fugitive named Moregi on Pantora . Vos traveled to Pantora where he managed to partner up as a bounty hunter before revealing his true identity and enlisting Ventress ' support to kill Dooku . Following the failure of Vos and Ventress ' assassination attempt , Highsinger and his fellow syndicate members took part in a mission to infiltrate Serenno and rescue Vos . Earlier , Fett had been visited at Chalmun ' s Cantina on Tatooine by Ventress , who wanted to rescue her partner and lover from Dooku . Highsinger accompanied his fellow syndicate members and Ventress as they traveled on Fett ' s starship " Slave I " to Serenno . While Ventress infiltrated Dooku ' s palace , Highsinger and his associates staged a diversion and attack several Separatist vehicles and droids . They even managed to snare Dooku under some webbing but were forced to flee when Vos spurned Ventress ' rescue and openly sided with Dooku . Galactic Civil War . During the Galactic Civil War , Highsinger was among the bounty hunters hired by Darth Vader to return Doctor Aphra to him , after she was captured by the Rebel Alliance on Vrogas Vas . Behind the scenes . Before the cancellation of TV series , Highsinger was set to make an appearance during a four - episode arc starring Boba Fett and Cad Bane . In a clip revealed during the Animated Origins and Unexpected Fates panel at Celebration Orlando in 2017 , Highsinger was seen siding with Cad Bane during a stand - off against Boba Fett and other Bounty Hunters .