Big - Mouth " Big - Mouth " was the nickname assumed by a clone of the bounty hunter Jango Fett . He served as a clone trooper in the Grand Army of the Republic under the leadership of Captain Styles and Commander Grey . During Order 66 , Big - Mouth was killed by Jedi Padawan Caleb Dume on the planet Kaller . Biography . Disaster on Haruun Kal . " Big - Mouth " was the nickname assumed by one of the many clones of the bounty hunter Jango Fett created on the planet Kamino to serve as a clone trooper in the Grand Army of the Galactic Republic . During the Clone Wars between the Republic and the Confederacy of Independent Systems , Big - Mouth was assigned to the command of the Jedi General Depa Billaba and fought alongside her on the planet Haruun Kal against forces led by the cyborg General Grievous . All but four of the clone troopers serving with Billaba — Big - Mouth , Soot , Styles and Grey — were killed and the Jedi herself was injured to the point that she fell into a coma . Recon on Kardoa . After six months , Billaba awoke and took the youngling Caleb Dume as her padawan learner . The pair were assigned a mission to scout the planet Kardoa for Separatist activity and Clone Commander Gray re - gathered her four surviving colleagues to serve with her again including Big - Mouth , who held the rank of corporal . The commander also managed to have the veteran clones Lieutenant Remo and Corporal s Mixx and Kaylon assigned to the battalion under Billaba ' s command , but was otherwise given inexperienced troopers fresh from Kamino to work with . Grey relayed this information the the Jedi and her padawan in a briefing while they camped out on Kardoa ' s surface . The next morning the operation began and the Republic forces split into five squad s to search the canyons of the world . Big - Mouth was part of a team led by Billaba that also included Dume and the clone trooper CT - 1157 — one of the new troopers whom Big - Mouth kept a close eye on . As they traveled Dume and CT - 1157 began joking about the short leash that Billaba and Big - mouth kept them on respectively , earning them disapproving looks from the general and the corporal . As the pair joked , Billaba ' s squad came under attack from Separatist B1 battle droid s that had been waiting in ambush , and Billaba ordered Big - Mouth to contact the other squads and request air support . The corporal tried to comply , but found that their signals were being jammed by the Separatists and informed that general that no help was coming . Billaba then ordered Big - Mouth to remain with Dume and keep the battle droid s occupied while she slipped away to find the Separatist ' s command ship . The clone did as ordered , but quickly realised that Dume was fighting too far out in front of the rest of the Republic forces , leaving him exposed . The corporal tried to call the padawan back , but was too late , as a series of blaster bolts struck Dume across the torso and knocked him to the floor . Ignoring Big - Mouth ' s orders to stay in cover , CT - 1157 rushed out to defend his friend , destroying a trio of droid s approaching the incapacitated padawan . Billaba meanwhile had managed to locate the Separatist ' s shuttle and attacked it , causing the Separatist Colonel Coburn Sear to order a retreat off world so that his forces did not become stranded . Battle of Mygeeto . The battalion ' s next assignment was to the war - torn world of Mygeeto , where they were tasked with clearing the southern mesas of Separatist forces during the Third Battle of Mygeeto . Big - Mouth gave Dume one of his trademark Meilroonuns at their base at Mesa Camp Six before being assigned a squad to lead and setting out into the mesas . While he and his men were out in the field , Billaba , Grey , Styles , Dume and Stance returned to their camp after being rescued from a Separatist attack by the Mandalorian Skull Squadron , only to be attacked again this time by Grievous and Sear . Big - Mouth and the other clones were called back for support , but before they arrived Sear managed to kill Stance , only to in turn be killed himself by Dume . Billaba sustained injuries while fighting Grievous , but was able to hold the cyborg off until the arriving reinforcements forced him to flee . Following the battle a burial service was held for stance and then the clones and Dume visited Billaba while she recovered in a bacta tank . Orders then came in for the battalion to head to the planet Kaller as soon as the general was battle ready . Order 66 . On Kaller the Republic ' s forces engaged Separatist forces under the command of General Kleeve outside Plateau City , eventually routing them once they came close to the city walls . Kleeve and the remaining Separatist forces fled the planet , and after meeting with the Kalleran Gamut Key in Plateau City , Billaba ordered her men to set up camp for the night in the fields outside the city ' s walls . After darkness had set in , the clones sat around campfires in the fields , with Billaba sat with Dume , Styles and Grey . As they celebrated their victory , they received communication from Supreme Chancellor Sheev Palpatine , issuing Order 66 , a command to execute all members of the Jedi Order . Despite their friendship with Dume and Billaba , the clones had no choice but to comply due to inhibitor chips implanted in them by the Kaminoans on Palpatine ' s orders . Big - Mouth and the rest of the battalion opened fire on the general and the padawan , with Billaba killing Kaylon , Remo and Mixx before Dume could even react . The boy then used his lightsaber to deflect blaster bolts back into Big - Mouth and Soot , killing them both . Styles and Grey soon managed to kill Billaba , but Dume escaped the clones and went into hiding . Personality and traits . As a clone of Jango Fett , Big - Mouth stood 1 . 83 meter s tall and had tan skin , brown eye s and black hair . By the time he was deployed on Kardoa he supported a large beard , which unlike his hair , was gray . Big - Mouth was known for his habit of constantly eating meilooruns , often sharing them with his comrades and being able to procure them even on worlds where they were not naturally found . He was unhappy with the fact that many of the clones in Billaba ' s battalion on Kardoa were so inexperienced , believing they should have more training before entering the field . As such he kept one such clone , CT - 1157 , on a short leash during their deployment . Big - Mouth initially teased Dume for his relative inexperience , but when the padawan took offence the clone explained he meant no harm and offered the boy some of his meiloorun . After seeing Dume fight eagerly during the first fighting on Kaldoa , the corporal commented that the boy was doing well , but later had to unsuccessfully try and prevent him from being gunned down while fighting too far from his own troops . Big - Mouth and Dume formed a bond while fighting together on Kardoa , and afterwards frequently offered him meilroonuns . Despite this bond , he and the rest of the battalion turned on Dume and Billaba during Order 66 due to the biochips in their brains . Equipment . Big - Mouth wore Phase II clone trooper armor with green markings on the helmet during the battle of Kardoa and carried a DC - 15A blaster . During the execution of Order 66 his helmet was unmarked . Behind the scenes . Big - Mouth was created by writer Greg Weisman and illustrator Pepe Larraz for the " " series of comic books and first appeared in the on May 6 , 2015 . His initial appearance in the series showed his death , but later issues of the comic showed Big - Mouth ' s earlier actions in the Clone Wars prior to Order 66 , including his growing friendship with Caleb Dume .