Slick / Legends " Slick " was the nickname of a veteran clone trooper sergeant in the Grand Army of the Republic during the Clone Wars . Named for his resourcefulness and discreetness , he began to develop a hatred for his Jedi commanding officers , believing that he and his fellow clone brothers were acting as the Jedi ' s puppets . In 22 BBY , Slick betrayed the Galactic Republic and began to pass inside information to the Dark Acolyte Asajj Ventress of the Confederacy of Independent Systems . After the Confederacy invaded the planet Christophsis , Slick accompanied a faction of Republic forces under the command of Jedi Generals Obi - Wan Kenobi and Anakin Skywalker to liberate the planet from the Confederate oppression . On Christophsis , Slick led his platoon on a reconnaissance of a strategical location for an ambush on the Confederate battle droids , and after returning to the Republic base , Slick informed Ventress and the Confederate General Whorm Loathsom of the Republic ' s plan . The Confederacy was able to ambush the Republic forces , and Kenobi and Skywalker went to search for information in Confederacy - held territory while Clone Captain CT - 7567 and Clone Commander CC - 2224 — nicknamed " Rex " and " Cody , " respectively — stayed to find the possible Republic traitor . In the clones ' following interrogation of Slick ' s men , Slick was revealed to be the Confederate spy , and after the traitor severely damaged the Republic base ' s weapons depot , Rex and Cody engaged him in a brawl . Slick was apprehended , and when Skywalker and Kenobi returned , the traitorous clone was taken to lock - up . Biography . Clone traitor . The clone trooper nicknamed " Slick " for his resourcefulness and discreetness served in the Grand Army of the Republic during the Clone Wars . Promoted to the rank of clone sergeant , Slick was given his own platoon of troopers . However , he began to develop a hatred for his Jedi commanding officers ; frustrated with the clones ' position in the Republic army as the Jedi ' s " puppets , " Slick betrayed the Republic , and in 22 BBY , he began to pass secret Republic information to the Dark Acolyte Asajj Ventress of the Confederacy of Independent Systems . In exchange , Slick received credits , as well as what he personally believed to be freedom . Ambush on Christophsis . In the seventh week of the war , the Confederacy invaded the planet Christophsis . Slick accompanied a faction of clone troopers under the command of High Jedi General Obi - Wan Kenobi and Jedi General Anakin Skywalker to liberate the planet . After the Republic had set up a base , Slick led his platoon to reconnoiter a strategic site from which to ambush the Confederate droid forces . In the planet ' s capital city , Crystal City , Slick discovered a business complex with adjacent towers that faced the north and south and overlooked a major plaza . He then reported back to Skywalker and Kenobi on considering the towers as ambush sites . As they returned to the Republic base , Slick and his men encountered a squad of B1 battle droids attempting to clear a major boulevard of Christophsian s . When the battle droids discovered a crippled Christophsian and discussed killing the man , the clones intervened and eliminated the droids . After returning to the base , Slick secretly transmitted the Republic ' s plan of attack to Ventress and the Confederate General Whorm Loathsom . The clone spy continued to send Ventress information every couple of days from a terminal in his unit ' s barracks . The Republic forces stationed themselves in the two towers , preparing to ambush the battalion of battle droids approaching in the plaza below . Kenobi , Clone Commander CC - 2224 — nicknamed " Cody " — and Slick were based in the south tower , while Skywalker and Clone Captain CT - 7567 — known as " Rex " — were positioned in the parallel north tower . The approaching column of droids suddenly split , and acting on Slick ' s information , a squad of B1 battle droids ambushed Kenobi and his men in the south tower . Kenobi ' s forces were overwhelmed , and Skywalker arrived with his men to assist Kenobi . Fighting back the droids , the Republic forces were able to escape from the roof of the tower via clone pilot Hawk ' s LAAT / i gunship . Before going back to his barracks , Slick returned his Hush - 98 comlink to the base ' s command center but left the device on so as to eavesdrop on Cody , Rex , and the Jedi as they debriefed on their failed plan . Slick learned that the Jedi believed that there was a traitor amongst their men ; Skywalker and Kenobi planned to secretly investigate behind enemy lines for information , while Rex and Cody resolved to stay and search for the possible Confederate spy . After the Jedi had left , Cody noticed the activated comlink , and Rex spotted Slick in the hallway but did not recognize the traitor ' s identity . Slick fled , and the two clone officers gave pursuit . Slick escaped into the mess hall , blending in amongst the other clones ; however , this tactic put Rex and Cody on the lead that the Confederate spy was one of the clones themselves . Returning to his barracks , Slick reported the Jedi ' s mission to Ventress , and the Dark Acolyte planned to confront them at the Confederacy ' s base . Turncoat revealed . Rex and Cody went back to the base ' s command center to continue their search for information . The two clones used the astromech droid R2 - D2 to track an irregular wavelength in external communications — that Slick had caused from contacting Ventress every few days — to the terminal in the sergeant ' s barracks . Rex and Cody decided to interrogate Slick ' s men , believing that one of them was the double agent . When Rex and Cody arrived at his barracks , Slick insisted on talking with his men first , stating that their morale would be damaged , but the two proceeded with the investigations anyway . When Chopper was questioned , the trooper stated he had been in the mess hall after they had returned , but fellow troopers Punch and Sketch claimed that they had not seen him there till much later . Chopper revealed that he had been taking battle droid fingers from the battlefield — an act forbidden against war protocol — and had been stringing them together in a necklace . Slick used Chopper ' s discreditable situation to his own advantage , suggesting that Chopper himself was the spy . However , while stating to Chopper his right to silence , Slick accidentally revealed that he was aware of the Jedi ' s secret mission , information he could have never otherwise known . When Cody noticed this , Slick ' s cover was blown , and the Republic traitor attacked Cody and Chopper before fleeing . Slick deduced that Rex and Cody would check the gunship landing platform , believing that he was trying to escape , and left his utility belt attached to a thermal detonator there . When the two clone officers arrived at the gunship platform , Slick activated the explosives , destroying the gunships and AT - TE walkers on the landing platform as well as the base ' s weapons depot . Slick then entered the command center and hid in the vents above ; Rex and Cody followed him into the command center and engaged in a ruse to bait Slick out of the vents . Cody took the ammo out of his blaster and left the gun on the table , while Rex seemingly left to check the south exit . Slick stole Cody ' s blaster and sneaked up behind the commander but discovered that the blaster was empty . Rex reentered the room , and Slick was surrounded . Exchanging derisive words with Rex and Cody , Slick suddenly attacked Rex , stealing the captain ' s blaster and knocking him to the floor . Cody was able to disarm Slick but lost his own blaster in the process . As Slick headed for the door , Cody grabbed his legs and brought him down to the ground before engaging Slick in close combat . Rex ended the evenly - matched pair ' s fight by pulling Slick off Cody , but Slick was able to knock his adversary to the floor . Using the " groin popper " maneuver to dislocate Rex ' s leg , Slick stated that while Ventress had offered him money for his information , she had also offered him freedom . However , Cody punched Slick in the head and rendered the distracted clone traitor unconscious . As Slick reawakened , he was taken in handcuffs to the Jedi , who had returned from a duel with Ventress . Slick verbally abused the Jedi , decrying that he and his clone brothers were acting as their puppets . Slick also stated that he loved his brothers , but Cody intervened , asserting that if Slick had loved his brothers he would not have put them at risk . The traitor was taken to lock - up , receiving a lengthy prison sentence , while the Jedi devised a plan to continue the fight against the Confederacy with their remaining resources . Rumors of Slick ' s treachery persisted many years later , during the rule of the Galactic Empire . In the " " , an Imperial officer ' s manual published shortly before the Battle of Yavin , the Kaminoan Nala Se claimed that such reports were likely the result of Jedi tampering . Personality and traits . Slick ' s hair was the generic black color of the clone troopers ; he shaved it off to a trim halfway up the sides of his head in a crewcut style . He also dyed his eyebrows a dark red . He stood 1 . 83 meters tall and had brown eyes and tan skin . As his nickname suggested , Slick was both resourceful and discreet , taking advantage of Chopper ' s visibly discreditable position during interrogations . He was also able to hide his true intentions from the Jedi and his fellow clones for a time , but although he was determined to outfox Rex and Cody , he was ultimately unable to do so when his true allegiances were revealed . Slick knew that after he was revealed to be the traitor , Rex and Cody would deduce that he would try to escape and search the gunship landing platform . He used this to his advantage , planting explosives to delay the clones and sabotage the Republic ' s weapon supplies . Slick did not escape when Rex and Cody believed he would ; rather , he attempted to flee after he realized that he had been outsmarted when the pair were able to bait him out of the command center ' s vents . Slick professed love for his clone brothers , but possessed a hatred for the Jedi . He believed that the clone troopers were no more than cannon fodder for the Jedi , and because of this , he believed that fighting for the Republic was dishonorable . However , while Slick acted for his clone brothers , he put forth his own pursuits of greater deeds , unaware of the danger that he imposed on his fellow clone troopers . He became a threat to his brothers in selling information to Ventress as well as sabotaging the Republic ' s supplies ; both actions decreased the Republic ' s chance of defeating the Confederacy and increased the chances of greater losses . Despite this , Slick believed that he was doing the right thing for all clones and that it was worth the sacrifice . While Slick himself devised a plan to outmatch Rex and Cody that nearly succeeded , the two clones were able to outsmart Slick by baiting him out of the vents . Slick was capable in close combat , as evidenced by his brawl with the duo , and as both he and Cody were veteran troopers , they were evenly matched in fighting skills . The sergeant ' s ruthlessness was portrayed through his violent actions , as he did not hesitate to dislocate Rex ' s leg . Behind the scenes . The character of Slick was introduced in " The Hidden Enemy , " an episode in the 2008 of the , and " " , an issue of the series ' , leading into the episode . Slick was portrayed by voice actor Dee Bradley Baker , who provided the voice for all the clones throughout the series . The trooper was later given entries in the 2009 " " and " " , both written by Jason Fry . Slick was noted as being the first clone traitor introduced in the series — something considered contradictory of the clones , as they were all seemingly bred to serve the Republic and be identical in beliefs . The episode ' s director , Steward Lee , and the episode ' s writer , Drew Greenberg , both note this detraction as " an ominous sign of things to come , " for if one clone can break from his brothers , there is no telling how many others would do the same . Slick was to originally have red hair , but in the final version of the episode the standard black hair of the clones was used . This helped him blend in with the other clones , rather than stand out from them .