18 18 , nicknamed " Ace " , was a clone trooper lieutenant , who served in Excelsior Company , under Clone Commander Vargus during the Clone Wars . Biography . 18 was the nickname of a clone trooper lieutenant that served in Excelsior Company , under Clone Commander Vargus . As a young man , he sometimes played the game Banthas and mynocks . He was assigned as a lieutenant on Kamino , and chosen to be one of the six rookies chosen to aid Excelsior company on Ando Prime . Their mission was to discover the whereabouts of the 313th Legion , which had begun a routine attack operation on a CIS base there three days ago . Twenty - four hours before 18 ' s assignment the 313th had disappeared without a trace and sent no emergency transmissions , though all comm equipment was verified to be operational . Before entering hyperspace , 18 ' s squad were de - moralized by a seasoned clone trooper named Dom , or Bruiser , after he said that they were " expendable " . 18 , however , tried to keep up up his squads morale by saying that Dom was probably only trying to " ride " the rookies . During the Hyperspace trip 18 used the squad medic ' s scalpel to give himself a crew - cut . 18 also wondered where to get dye , as he would like to dye his hair red . When 18 and his squad landed on Ando Prime , they were introduced to an ARF trooper named Falco . 18 and two other clones — 57 and 44 — were also chosen to accompany Falco on a first sweep of the area of the 313th legion ' s last known transmission . At this time 44 was given a nickname , " Slug , " due to the fact he was twenty meters behind the rest of the group . 18 was jealous of this , as 44 now has a nickname . After more trekking , Falco orders 18 , 57 and 44 ( Slug ) to wait at the base of a mountain while he investigates alone . The three troopers waited an hour , and 18 wondered if Falco was playing a joke on them . Commander Vargus contacts them and asks their status . 18 said Falco had gone on alone , but doesn ' t mention that Falco had been gone over an hour . After persuasion by the other two troopers , 18 contacted Vargus and informed him of Falco ' s long absence . Commander Vargus brought the rest of the squad , but before they could reach 18 , Slug , and 57 , the trio are attacked by snow beasts much like the Wampas on the planet Hoth . 18 and 57 get out of the way of a beast jumping at them , but Slug was grabbed by the beast . Commander Vargus fired on the beast , but all it does was enrage the creature , and made it head for Vargus . 18 fired at it , but his blaster does no damage to the beast . Commander Vargus was swiped at with one of the beast ' s claws , then stepped on by it . 18 approached the beast and shot at it at close - range , which made it drop Slug . The squad medic checked on Vargus , and discovers he had some broken bones . 18 organized a trek to get a transport vehicle from the ship . He orders Slug and 16 to stay with 57 to protect Vargus . He would go back to the ship with 23 , 15 and Dom . They were approaching the ship when three more snow beasts came toward them and block them from reaching the ship . 18 ordered Dom to set off a sonic charge , hoping that like Wampas , these creatures are sensitive to some sound frequencies . They were , and they leave due to the sonic charge . Once inside the ship they find Falco ' s BARC speeder . 18 rigged a platform on the back to bring Vargus back on . Dom was sent out to get Vargus . 18 , 23 and 35 stay behind . The speeder returns with 57 and Vargus . 57 tells 18 the rest are returning on foot . In the ship ' s medical bay 57 sets Vargus ' s broken bones with assistance from a portable FX - 3 medical droid . 18 and the squad check on Vargus , who had nicknamed 57 " Patch . " 18 now felt left out of not getting a nickname . Vargus informed 18 that he received a transmission from Falco , who had found the CIS outpost . Vargus tells 18 to organize a squad at first light to go to the outpost . The next morning 18 takes Dom , 23 and 35 with him to go to a Confederate outpost . 18 decided to avoid the mountains , because of the snow beasts . Instead , the group walked across a plain and reaches a very large canyon . Across it is a racetrack , and two abandoned podracers . Although all the other members of the squad wanted to use the podracers to get across , 18 insisted they were too dangerous and makes them walk around the canyon . A few hours later they reach the other side , and the Confederate outpost . Inside the outpost , made of several different huts , Falco tells them to come into building 46 - beta . Inside , the group of clones met two men : Clone Commander Cody , who was admired by 18 , and Jedi Master Obi - Wan Kenobi . Kenobi told 18 what happened to the 313th Legion . He explained that he and Cody detected a massive hyperspace rift in the CIS outpost and traced to to a machine . The machine was able to instantly transport large amounts of troops across the galaxy . Kenobi guessed that the machine was accidentally activated in battle and transported the 313th Legion , as well as the droid army , to a planet beyond the Outer Rim . If a homing device was taken to the legion , it can bring them back as long as they are all in a 1 km radius . Dom , Falco and 18 are selected to accompany Cody and Kenobi to go to the 313th legion . The squad is lead to the machine , and moved to the other planet . There they find the 313th legion engaged in battle with the battle droid army . They cannot get them back without transporting the droids as well , so they must concentrate the clones away from the droids . Cody discovers a droid comm station and suggested they destroy it . Kenobi believed that it was a priority to find General Bandis , leader of the 313th Legion . Kenobi asked 18 if he felt able to lead an attack on the comm station or let Kenobi destroy the station and instead go into battle with Cody . Last stands . Ace decided to assist Cody in battle and let Kenobi destroy the comm station . Cody discovered General Bandis ' s unit . 18 and Cody charged into the droids , fighting their way to General Bandis . Cody told Bandis the rescue plan . After Kenobi destroyed the comm station , making the droids confused , the droids were defeated , and the legion was transported back to Ando Prime by using the homing device . Back at the ship , Cody suggested 18 is ranked up to lieutenant for his work . Alternatively , 18 accepted the mission of destroying the comm station with Dom and Falco . When they reached the comm station they discovered that it is heavily guarded by droid forces . It was also guarded by a modified Hailfire droid . Unlike a " Hailfire " , however , the tank was operated by two B1 battle droids , instead of being self - aware , like usual . Dom wanted to blow the place up , but 18 says that they will have to get closer . He then asks Falco to do reconnaissance on the perimeter of the station , to see if there is a weak spot . A few minutes later Falco came back and told 18 that the battle droids are all around . Faclo suggested that they could storm the place , but 18 figured that they would be destroyed by the tank . Dom still wants to risk it , but 18 suggests that they could reprogram some guard droids to commandeer the tank for them . Falco believed that reprogramming droids would be too tricky . Instead , he suggested that they storm the tank and steal it . 18 agreed and decided to storm while the tank was rolling away from them . They did , and managed to remove the battle droids from the tank . They approached the comm station in the tank , and Dom threw two pulse grenade s into the comm station . They escaped in the tank , and the comm station was destroyed . Afterward , they destroyed many droids with the stolen tank . The rest of the operation went well , and a few hours later the 313th legion is back on Ando Prime , as well as 18 and the rest of the squad . In the ship , Falco gives 18 the nickname " Ace " , for his work . Behind the scenes . This article assumes that a specific path is taken in a choose your adventure book .