Jester / Legends " Jester " was the nickname of a clone trooper who was part of Clone Sergeant Slick ' s platoon during the Clone Wars . In 22 BBY , he served in a Jedi - led battle group of the Grand Army of the Republic that was dispatched to liberate the planet Christophsis from the Confederacy of Independent Systems . Alongside his unit , Jester reconnoitered the planet for a strategic ambush site , but the Confederacy thwarted their planned attack , forcing them to retreat . After the clone troopers returned to the Republic base , Jester cleaned his DC - 15S blaster , as he did after every battle . When Clone Captain CT - 7567 and Clone Commander CC - 2224 questioned the members of Slick ' s platoon to identify a potential Confederate spy , Jester was nervous about talking to his commanding officers , but fellow soldier Sketch vouched for him , allowing Jester to verify his alibi . Sergeant Slick himself was thereafter revealed to be the traitor and was apprehended . Biography . The clone trooper nicknamed " Jester " was cloned from the bounty hunter Jango Fett on the planet Kamino for service in the Grand Army of the Republic . During the Clone Wars , he joined Clone Sergeant Slick ' s platoon of soldiers . In 22 BBY , in the seventh week of the war , Jester and his unit were assigned to a contingent of the Republic Grand Army — under the command of High Jedi General Obi - Wan Kenobi and Jedi General Anakin Skywalker — to liberate the planet Christophsis from the Confederacy of Independent Systems . After the Republic troops established a base , Slick ' s unit scoured the planet for a suitable site from which to ambush the Confederate battle droids , eventually locating a double - towered business center in Crystal City . On their way back to the Republic base , the platoon came across a squad of B1 battle droids that were attempting to clear a major boulevard of Christophsian refugees . When the droids happened upon a crippled Christophsian and contemplated killing him , the clones intervened and disabled the enemy troops . The Republic forces proceeded to the business complex to set up their ambush , and Sergeant Slick ' s platoon became based out of the complex ' s south - facing tower with General Kenobi and Clone Commander CC - 2224 , while Skywalker and Clone Captain CT - 7567 stationed their troopers in the parallel north tower . As the Separatist battle droids passed through the plaza below , the approaching column of droids unexpectedly divided in two , and a contingent of droids arrived in the south tower and ambushed the clones . Skywalker and his men rappelled over to the south tower to reinforce Kenobi ' s forces , and they took a turbolift to the roof of the tower , where they escaped aboard clone pilot Hawk ' s LAAT / i gunship . After returning to the Republic base alongside the others , Jester cleaned his DC - 15S blaster , as he always did after a battle . Later that evening , CC - 2224 and CT - 7567 — nicknamed " Cody " and " Rex , " respectively — pinpointed an irregular wavelength in external communications to Slick ' s barracks , fueling their suspicion that someone in the platoon was a Confederate spy . Consequently , the two officers called Jester and the other members of his platoon back to their quarters to individually interrogate them about their whereabouts earlier that evening . Jester was initially nervous about speaking to his commanding officers , but fellow trooper Sketch vouched for his habit of regularly cleaning his blaster , and Jester presented his freshly scrubbed weapon to Cody as evidence . Eventually , Slick was revealed to be the spy and escaped from the barracks , following which he sabotaged the Republic ' s gunships , AT - TE walkers , and weapons depot . When Gus spotted Slick heading for the base ' s command center , Rex and Cody ordered Slick ' s platoon to secure the perimeter . The two officers thereafter managed to detain Slick . Personality and traits . As a Human male , Jester had a height of 1 . 83 meters and had black hair , tan skin , and brown eyes . Combat taught him the value of his blaster , and the self - disciplined soldier developed a habit of cleaning , scrubbing , and maintaining his weapon after every battle . He was initially nervous about talking to his commanding officers , and at first stuttered while addressing Rex and Cody — in his opinion , he would have rather faced a horde of battle droids than be subjected to an interrogation by his superior officers . After Sketch vouched for him , he became more confident , offering evidence that Cody and Rex could verify themselves . Jester was visibly shocked when his own sergeant , Slick , was outed as the Confederate spy within the Republic ' s ranks . Besides maintaining his weapon , Jester kept his sideburns carefully tended . He was trained in combat , recon , and military tactics and was also proficient in handling heavy weapons like the Z - 6 rotary blaster cannon . Behind the scenes . Jester first appeared in " " , following which he was featured in " The Hidden Enemy , " the episode of the ' 2008 – 2009 that the comic led into . In the episode , he was voiced by Dee Bradley Baker , who provided the voice for all of the series ' clone trooper characters . Jester ' s model was later reused for clone trooper Pulsar in the episode " Brain Invaders . "