Whistler Whistler , also called Xeno , was the astromech droid of Corran Horn . It was the same R - series model as the legendary R2 - D2 . Just like almost every standard astromech droid , Whistler ' s metal body was silver and white . Whistler had green details — the color of CorSec and Corran ' s X - wing . Biography . An R2 - series astromech droid , Whistler was programmed by CorSec with an enhanced sensor package and software useful for piecing together case elements to assist in detective work . Horn personally modified Whistler with escape and evasion subroutines . Whether a product of the enhanced creativity of his CorSec software or Horn ' s habitual choice to forgo memory wipes , Whistler developed a near - Human personality . Horn even speculated that Whistler uploaded elements of his personality and then retrieved them after the memory wipe . Like R2 - D2 , Whistler went so far as to develop a sense of humor ; he even joked to Mirax Terrik that he wished to be " Pulsar Skate " s navigator after Horn ' s retirement . Whistler often served as an imposed guardian of Horn ; almost like a chaperone , or a brother . When Corran Horn was being antisocial after first joining the Rogues , Whistler encouraged him to spend more time with the squadron . Prior to Corran joining the Rebellion . At the time Corran Horn left CorSec and Corellia , he took his X - wing and Whistler with him . During the two years on the run , Corran became an aide to a series of incompetent Imperial Military Prefects on Garqi , under the alias Eamon Yzalli . During this time , Corran took his X - wing out on frequent night flights . On one such flight , Corran ' s starboard engine sucked in a rdava - bird and broke . In order to get the parts he needed to make repairs to his ship , he contacted the Duros trader Lai Nootka ; however , Nootka and the crew of his ship , the Star ' s Delight , were arrested and imprisoned , and the spare X - wing parts they were smuggling led prefect Mosh Barris to believe Garqi had become a hotbed of Rebel activity . While Corran attempted to devise a plan to get the spare parts for his X - wing out of the guard ' s hands , Whistler , going by the code name Xeno had organized a " Rebel " cell among students at Garqi Ag University , over computer networks , although the extent of the cell ' s actions was limited to vandalism using rebellious symbols and slogans . One of the members of this cell , Dynba Tesc , was arrested after they traced paint that she used to paint an anti - Imperial slogan on the side of the Imperial court to her personal account . When Barris was unable to get any useful information from her after two days of interrogation , he decided to have her executed . At the same time , Corran found out that his former Imperial Liaison Officer at CorSec , Kirtan Loor , was coming to inspect Garqi . Corran devised a plan that would simultaneously save Dynba and the crew of the Star ' s Delight and allow him to get his X - wing repaired in time to get off Garqi before Loor arrived , while also framing Barris for treason and the murder of " Eamon Yzalli " . He proposed to Barris that instead of executing Tesc , he could allow her to stage an escape with her fellow Rebels and the crew of the Star ' s Delight , but sabotage the ship ' s shields , allowing them to shoot down the ship while it was escaping , destroying the entire cell . Corran pointed out that Barris could time the plan to coincide with Loor ' s arrival to display his efficiency in dealing with Rebels to the Intelligence officer . Barris approved , and Corran began executing the plan . Corran went to Tesc , claiming to have had a change of heart about the Empire , which had destroyed Eamon Yzalli ' s supposed home world of Alderaan , and could not bear to see her executed . He gave her a rank cylinder which identified her as Intelligence agent " Kirtana Loor , " and allowed her to take custody of the Star ' s Delight ' s crew , contact her conspirators , and escape . He meanwhile had the spare X - wing parts transferred to the Star ' s Delight , but reported to Barris that some of the parts had been stolen , reportedly believing someone had stolen them to repair their private T - 47 landspeeder . In reality , he had stolen the parts to repair his X - wing . He then had Barris report that " Eamon Yzalli " had been executed for " anti - Imperial behavior " , so that Tesc would take leave without him . The Star ' s Delight took off , and Mosh Barris sent TIE fighters in pursuit . Corran had originally planned to only use the Star ' s Delight ' s escape as a diversion for his own ; however , he was forced to change his plans when he found out that the code to activate the shields had not been communicated to the crew as planned . He took off after the freighter in his X - wing , and communicated the code to activate the shields to the crew . He destroyed all four of the attacking TIEs and escaped along with the ship to the Rebel Alliance . After hearing about the battle , Rebel Captain Dromath attempted to convince Corran to join the Alliance . While initially reluctant , Corran agreed to join when he heard that Rogue Squadron was being reformed , and he might be good enough to join it . After Corran Horn joined the Rebellion . Whistler also developed a very tight bond with Wedge Antilles ' s astromech droid R5 - G8 , or " Gate " . After Rogue Squadron was captured by Ysanne Isard , Whistler and the other astromechs were fitted with a restraining bolt and deactivated for the duration of a joint Imperial - Rogue Squadron mission to defeat Prince - Admiral Delak Krennel . Whistler , however , had been reconfigured inside from his time with Corran as part of the Corellian Security Force , so the restraining bolt only communicated to him the signals from the controller , as opposed to actually shutting him down . Whistler used his security programming to re - activate Gate and slice into base floor plans and escaped . The two then booked passage to Oradin . The pair reached Talon Karrde and through him reached Mirax Terrik . At the time of one of his missions , Corran discovered that Whistler had a recorded message from his father outlining his Jedi heritage . While on a search for his kidnapped wife , Mirax , Corran asked the droid to play the message . Behind the scenes . Whistler may have been the first astromech droid featured in the " Star Wars " universe to have a nickname not based on its numerical identification . Most subsequently - featured astromech droids have nicknames of their own .