10 - 4TO 10 - 4TO was a rogue TO - series protocol droid , also known as Bug Eyes , whose databank was rumored to contain vital plans for the Whiplash resistance against the Galactic Empire . The droid and its rumored data were in fact a lure devised by Darth Vader to attract the Jedi Knight Jax Pavan , whom he sought in order to obtain a pyronium nugget given to him years earlier . The droid was then set loose on the planet Coruscant in hopes of being found by Pavan , who was reported to be working with the resistance . Pavan ' s master began looking for the droid . The Jedi Master encountered the ex - Republic soldier Nick Rostu after being mortally wounded by Imperial stormtroopers and asked Rostu to pass on the mission to find 10 - 4TO to Pavan , which he did . Later , Vader had Rostu captured and sent him to find Pavan . 10 - 4TO could be controlled by the single phrase " " zu woohama " , " which would cause it to obey the individual who had most recently spoken the phrase . The droid was also capable of delivering powerful stunning blasts to organic creatures with a blaster mounted in its left arm . The ostensible value of its databanks made it the objective of crime lord Prince Xizor ' s final mission on the path to becoming a Vigo in the Black Sun criminal organization . The head of Black Sun , Dal Perhi , sent Xizor to find and locate the droid . However , Perhi had noticed Xizor ' s ambition and the mission to locate the droid was a ruse to have a Black Sun assassin , Kaird , eliminate Xizor . The plan failed , and Kaird was captured by Xizor , who had found and controlled 10 - 4TO by this point . Xizor took Kaird and 10 - 4TO to the Factory District , where he planned to have Kaird brainwashed , but instead , feral droid s had destroyed his facility . At this point , the trio were found by Pavan and his party . Though initially subdued , Rostu , who had joined up with Pavan , used the control phrase to have 10 - 4TO release him . Xizor regained control of the droid and attempted to have 10 - 4TO disable the others in the party before they could escape . The droid fired on Pavan and closed on him when he hid behind cover , only to have the Jedi stab it with a vibroblade . 10 - 4TO staggered back and fell through a transparisteel window and dropped out of sight , where it was set upon by feral droids and destroyed . Pavan and his party later learned from an Imperial defector , the Elomin Haninum Tyk Rhinann , that 10 - 4TO and its rumored databanks had only been a trap for Pavan and were not actually of value to the resistance . Biography . 10 - 4TO , also referred to as " Bug Eyes " due to its insectile appearance , was a TO - series protocol droid in the employ of the Sith Lord Darth Vader in 19 BBY . As part of the rise of the Galactic Empire in 19 BBY , the Jedi Order was largely wiped out , its survivors scattering into hiding from the Empire . The Human Jedi Knight Jax Pavan was one of these fugitives , hiding in the lower levels of the galactic capital of Coruscant . Vader took interest in Pavan due to a pyronium nugget that Pavan had once been given and sought to ferret him out from hiding . As such , Vader employed the Elomin aide Haninum Tyk Rhinann to assist in the effort to capture Pavan , though Rhinann was not privy to all of Vader ' s plan . Vader leaked word that a TO - series protocol droid designated 10 - 4TO had a malfunctioning operating parameter that had caused it to wander around Coruscant unattended , and furthermore was carrying information that could be vital to the fledgling resistance movement dubbed Whiplash that had arisen to oppose the Empire . 10 - 4TO believed that its destination was the headquarters for Whiplash , but its databanks contained no such data ; the droid ' s entire purpose was a ruse . 10 - 4TO was turned loose on Coruscant , while word reached Pavan of the droid ' s alleged importance . A former decorated Grand Army of the Republic soldier , Nick Rostu , had stumbled upon Pavan ' s former Jedi Master as he was dying after a battle against Imperial troops while looking for 10 - 4TO . The Jedi Master told the mission to Rostu and asked him to relay it to Pavan to complete . Rostu was successful and communicated the mission to locate 10 - 4TO to Pavan , telling him it was the last request of his master . Pavan accepted the mission , assisted by several others , including the emancipated droid I - 5YQ , Sullustan journalist Den Dhur , Gray Paladin Laranth Tarak , and Rostu . Rostu also informed Pavan of the control phrase for 10 - 4TO , which would cause the droid to obey whoever had most recently said the phrase ; the phrase was " zu woohama , " an impolite Wookiee saying . The ex - soldier volunteered to assist him , but Pavan declined , feeling that he needed to fulfill his master ' s dying request on his own . To find the droid , Pavan enlisted the help of Laranth Tarak , and the two sought out Rokko the Hutt for his services as an information broker to help them find 10 - 4TO , who was rumored to be in the Yaam Sector of Coruscant . Rokko agreed to partner with Tarak and Pavan to find 10 - 4TO , as the pair had framed the droid as being very valuable if recovered and returned to the Empire for credits . However , while Pavan was searching for 10 - 4TO , Rostu was apprehended by the Empire and Vader , knowing that the ex - soldier had known Pavan during the Clone Wars . Vader sent him to find Pavan , threatening to destroy his family on Haruun Kal if he did not cooperate . Rostu reluctantly rejoined the hunt for 10 - 4TO , conflicted about his choice to betray Pavan to Vader . He was given the droid ' s location and sent on his way . Pavan and Tarak were not the only ones searching for 10 - 4TO . The criminal organization known as Black Sun had also received word of the droid ' s alleged value from their contacts in the Imperial Palace . Underlord Dal Perhi dispatched one of his most promising members , the Falleen Prince Xizor , who was pursuing the position of Vigo , to recover 10 - 4TO , supplying him with information about the droid , including its control phrase . In fact , Perhi ' s mission was a ruse to have Xizor eliminated by the Nediji assassin Kaird , as Perhi saw Xizor ' s ambition as a threat to his own life . Kaird was also instructed that recovering 10 - 4TO would be an added bonus if he was successful in eliminating Xizor . Kaird tracked Xizor to the slums where 10 - 4TO was wandering and attempted to take his life , but his aim was thrown off and Xizor escaped . Kaird pursued him and the two fought , though an electrical surge caused by a torn power cable diminished their combat abilities . As Kaird closed on Xizor , 10 - 4TO , who was already under Xizor ' s control , ambushed the Nediji , stunning him with multiple blasts from his arm - mounted blaster . Xizor ordered 10 - 4TO to keep firing on Kaird , relenting only to attempt to interrogate Kaird and ascertain who had sent the assassin . Kaird was recalcitrant , and Xizor had 10 - 4TO resume discharging its weapon into Kaird . However , they were suddenly confronted by Pavan , Tarak , Dhur , and I - 5YQ , who had been found and led to 10 - 4TO ' s location by Rostu , who had rejoined them without revealing his obligation to Vader . After a brief standoff where 10 - 4TO bought time with a crippling series of stun blasts into Pavan ' s party , Xizor and 10 - 4TO fled , bearing Kaird ' s supine body . They escaped by absconding with Kaird ' s ship , the Surronian assault ship " Stinger " , which Xizor flew to the Factory District on the other side of the planet . When they landed , 10 - 4TO asked Xizor why they weren ' t at Whiplash headquarters , but Xizor simply reasserted his command of the droid by speaking its control phrase . Xizor brought 10 - 4TO and Kaird to an abandoned droid - manufacturing plant , where 10 - 4TO was ordered to deactivate itself for ten minutes . The droid did so , missing an ultimately failed demonstration of a human replica droid by Xizor . When the droid reactivated itself , Xizor order 10 - 4TO to accompany him and Kaird to a secret laboratory , where he planned on having Kaird brainwashed to attack Dal Perhi in revenge . Upon arrival at the laboratory , they found that the scientists had been slaughtered by the feral droid s that roamed the Factory District . Meanwhile , Pavan ' s party had followed them to the Factory District . Splitting off from the group , Nick Rostu located Xizor , Kaird and 10 - 4TO . Rostu attempted to convince Xizor that Black Sun had sent him to warn him about the approach of Vader , who was ostensibly en route to retrieve the droid . Xizor pretended to believe him , but instead used his Falleen pheromones to influence Rostu , who led the Prince and 10 - 4TO back to his companions , who were fighting off feral droids . Xizor then had 10 - 4TO advance and stun Pavan and the rest of his party . 10 - 4TO fired on I - 5YQ , who returned fire in such a way that their beams intersected . The resulting explosion knocked I - 5YQ offline while 10 - 4TO stunned the rest of the party so they could be bound with forcecuffs and restrained Rostu . The Falleen prince was preparing to execute Pavan with his own lightsaber when Dhur used a secret command to reactivate I - 5YQ , who emitted a painful screech . Rostu then used his knowledge of 10 - 4TO ' s command phrase to command the droid to release him , and unsuccessfully assaulted Xizor . Xizor quickly regained control of 10 - 4TO by uttering its control phrase and ordered it to stop I - 5YQ . The droids fired on each other and 10 - 4TO ' s beam was able to override the opposing blast and knock I - 5YQ back . With that opponent momentarily disabled , 10 - 4TO turned its attention to Pavan , who had temporarily eluded it behind cover . When 10 - 4TO approached , Pavan lunged at the droid , stabbing it between its thoracic and ventral plates with a vibroblade . 10 - 4TO staggered back , tripped over a piece of debris , and fell against a transparisteel window that had been weakened in the earlier altercation with the feral droids . 10 - 4TO crashed through it and fell . It was set upon by feral droids and dismantled . I - 5YQ investigated its fate and reported back to the others once they were able to escape from Xizor . Pavan and his party would later learn from Haninum Tyk Rhinann — after the Elomin defected from Vader ' s service in an abortive confrontation in the Factory District — that 10 - 4TO contained no vital data and was only a decoy . Vader had pursued Pavan to the Factory District , tipped off by a tracker implanted in Rostu , but the impending destruction of an unstable reactor — courtesy of Pavan ' s lightsaber — forced him to temporarily break off his pursuit , which allowed Pavan and his party to escape . Characteristics . 10 - 4TO was a bipedal protocol droid of humanoid design , controlled by a central processing unit . The exterior of its chassis was glossy black , while its nickname " Bug Eyes " was derived from its large golden eyes , which were both insectile in appearance and covered most of its face as well as containing its photoreceptors . Two ten - centimeter - long segmented antenna joined at the temples of its head added to the droid ' s resemblance to an insect species . The droid had both thoracic and ventral plating over its torso . 10 - 4TO was rumored to contain vital information pertaining to the resistance movement in its databanks . The droid expected to be retrieved by the Whiplash movement , and was surprised when it was claimed by Prince Xizor instead . When it was set loose on Coruscant in 19 BBY , the droid was programmed to blindly obey anyone who spoke its control phrase of " zu woohama . " If multiple people spoke the control phrase , the droid listened to the individual who had most recently said the phrase . 10 - 4TO was armed with a retractable blaster in its left forearm , which was set on a stun setting , though multiple shots to a target in rapid succession could inflict serious injury or potentially death . The droid also had hands articulate enough to grip objects , including people , with sufficient strength that a trained ex - military Human was unable to wrest free . It was also equipped with sensors that allowed it to detect approaching people and had enough initiative to warn its controller of their presence . Behind the scenes . The search for 10 - 4TO provided the focal point of Michael Reaves ' novel " " , which was published in June 2008 . The search for 10 - 4TO served to unite Jax Pavan and I - 5YQ . Unlike many protocol droids , 10 - 4TO is not described with gender - specific pronouns , and is only referred to as " it " throughout the novel . The death of Even Piell in " " created a discrepancy over the canonicity of " Jedi Twilight " , as Piell ' s dying words in the novel are the catalyst for Pavan to search for 10 - 4TO . Lucasfilm Ltd . never resolved the conflicting information . This article treats Piell ' s actions as canon , but does not explicitly state his identity .