Beri Tulon The Human male Beri Tulon was an officer in the Imperial Army during the Galactic Civil War . Born into a family with a proud military legacy , his traditional principles limited his rise through the Imperial ranks . Throughout his career , he oversaw several battles and took the stormtrooper Brenn Tantor as a protege . After receiving what he considered to be immoral orders from Grand General Malcor Brashin , Tulon lost confidence in the Empire and ultimately attempted to defect to the Rebel Alliance . While his initial attempt was foiled , he was later rescued by Tantor , who had successfully defected himself . Tulon went on to serve as Tantor ' s right - hand man in several Rebel missions . Biography . An officer and a gentleman . Beri Tulon was a Human male born into a family with a proud military tradition dating back millennia . Family lore stated that his ancestors served with Empress Teta during the Great Hyperspace War . He happily continued that tradition by entering the Academy as soon as he could . Raised with traditional military values , Tulon was a principled and responsible officer . He made a point of earning the friendship and respect of his troops . This caused him to become the target of derision by his peers and superiors , but he was able to back his actions with his excellent results as a commander . However , this only served to embitter one of his superiors even more . The resentful officer plotted to kill Tulon by sending his unit to Khomm on what was supposedly a routine reconnaissance mission . To Tulon ' s surprise , a unit of mercenaries awaited him , slaughtering almost all of his soldiers . Tulon was able to trace the cowardly attack to the superior and made sure that he faced the full penalty of Imperial justice . The incident was enough to sour Tulon on command , however . No longer wishing to hold the responsibility for the lives and deaths of his men , he requested that he become a training instructor . Tulon rapidly became one of the most decorated training instructors in the Galactic Empire . Eventually , Tulon became involved in Grand General Malcor Brashin ' s Battlefield Holographic Control Interface ( BHCI ) program . In 0 ABY , Tulon , now a captain , observed the Battle of Kalaan to find prospects to be trained on the BHCI . He found Brenn Tantor , a stormtrooper corporal who had taken command of his unit when his superior was killed and performed superbly . Striding up to the young man in the ruins of a bombed - out Kalaan city , Tulon gave him a battlefield promotion to the rank of lieutenant and ordered him to report to the Star Destroyer " Inquisitor " for training . In orbit over Tatooine , Tulon introduced Tantor to the Battlefield Holographic Control Interface , a command station that allowed an officer to direct troops from the safety of orbit with the fullest possible representation of the actual field of battle . Tulon instructed Tantor as the new officer ran Zeta Squadron through a series of exercises . However , the training was interrupted by the announcement that an escape pod from the Rebel Alliance corvette " Tantive IV " containing plans to the first Death Star battlestation had landed somewhere near Zeta Squadron ' s position . Tulon observed as Tantor swiftly found the pod . The young officer next tracked down the Jawa sandcrawler that had picked up the droids carrying the plans and commanded a raid on Obi - Wan Kenobi ' s hut — where the droids had visited — all under Tulon ' s supervision . Tantor , Tulon , and Brashin were then sent to Ruul , based on the possibility that the starship " Millennium Falcon " , carrying the droids and the Death Star plans , may have escaped to there instead of the suspected target of Alderaan , which lay on a similar heading . Once there , they discovered that while the " Millennium Falcon " had not jumped there , the primary computer facility on the planet had been seized by forces of the Rebel Alliance . Tulon watched proudly as Tantor , now a captain as well , destroyed the Rebel presence on Ruul . A loss of confidence . This was the last mission in which Tulon supervised Tantor . Tulon , who had long considered himself a man of principle , had lost the confidence of Grand General Brashin . In Brashin ' s opinion , Tulon ' s conscience , and consequent instillment of more traditional military values in Tantor , was dangerous and unbecoming in an Imperial officer . Tulon was removed as Tantor ' s training officer and reassigned . For half of the following three years , Tulon was assigned to the Trasse Proving Grounds , an Imperial facility that manufactured All Terrain Armored Transports . There , the walkers were tested on Rebel prisoners and armored units . Such an assignment only deepened Tulon ' s discontent with his government . He had been raised by his family to be a man of honor , and as such , he could not make his values fit with those of an Empire that encouraged brutality and injustice . Tulon resolved that he could no longer serve the Galactic Empire . In 3 ABY , Tulon , by now a colonel , was assigned to command a detachment participating in the assault on a Rebel base on Abridon . Intending to defect on this mission , Tulon learned that his commander would be his old student , Brenn Tantor , now a very high - ranking Imperial general . Shortly after the mission began , Tulon ' s personal AT - AT , the " Annihilator 1 " , fired on the rest of his detachment and made a beeline for the Rebel base . Tantor , believing that his mentor was dead or the hostage of renegade elements , pursued the walker and brought it down . He was utterly shocked to find that Tulon had in fact been the one defecting . Tulon attempted to explain to Tantor that the Empire was corrupt and evil , but Tantor , feeling betrayed , and with Brashin monitoring , was unable or unwilling to aid Tulon . Fighting for his principles . Tulon was sentenced to imprisonment in Tarkin Detention Facility on Ruul . However , he never made it there . Unbeknownst to him , Tantor himself , tortured by his own Imperial demons , had refused an order to massacre civilians shortly after Tulon was captured . Tantor arranged his own defection with Rebel General Tyr Taskeen . Tantor ' s first mission after his defection was the rescue of Tulon . Tantor led several troopers on a daring commando mission , destroying the Imperial convoy escorting Tulon across Ruul ' s surface and spiriting Tulon away in a Hover Transport . Tulon learned that Tantor intended to capture an AT - AT walker to prove his loyalty and reliability to Taskeen and needed Tulon ' s experience with the Trasse Proving Grounds . Tulon realized that they would require a security code to access Trasse undetected and convinced Tantor to raid the Imperial computer facility at Sounder Flats in order to gain the codes . Tulon successfully extracted the codes , despite an Imperial counterattack . In preparation for the Trasse operation , Tulon trained a unit of elite soldiers , known as the Infiltrators , to hijack Imperial walkers . They were successfully deployed on Trasse and captured an AT - AT , but matters were complicated when " Inquisitor " appeared in the system , with Grand General Brashin aboard . Tantor ' s forces crushed Imperial ground opposition in order to rush Tulon to a planetary ion cannon , from which he disabled the Star Destroyer . While accessing the ion cannon ' s computer banks , Tulon also found some interesting data , suggesting that the second Death Star was nearly operational . Later , at the Liberation of Coruscant , Tulon was present when Taskeen briefed Tantor for the invasion of Coruscant , throne - world of the Empire . Tulon reported Rogue Squadron ' s successful sabotage of the shields . Personality and traits . Beri Tulon was raised in a military family , and was thus brought up with traditional martial values . These would have served him well had the Republic continued , but the imposition of Palpatine ' s Empire brought a new system into play . Strictly traditionalist and raised with a strong sense of morality , Tulon was not cut out for the New Order . Even so , Tulon was little different from thousands of other Republican - minded officers . However , his placement under a fanatic supporter of the new ideology in the form of Grand General Brashin brought that conflict to the front . Tulon ' s reassignment affected his career little , as seen by his promotions , but his new duties appeared to have a much greater impact on his conscience . The brutality that he witnessed and was forced to participate did not inure him to it but instead drove him further from the Empire . Though he valued loyalty , he valued his other principles more and cast his lot in with the Alliance . Behind the scenes . The character of Beri Tulon was created for " " , in which he was voiced by Peter Firth .