Subject 1157 Subject 1157 was the designation of a clone of the Human male Galen Marek , the Sith Lord Darth Vader ' s apprentice . Subject 1157 was raised in a cloning tank at a cloning facility on the planet Kamino around 1 BBY by the Galactic Empire . A cloning technician monitored his progress and recorded a number of observation logs . Subject 1157 underwent growth acceleration and received genetic memory imprints , and he developed consciousness and later " hallucinations " from the life of Marek . Over time , Subject 1157 was able to access the Force , as his template was able to , and the clone cracked the inside of his tank with Force lightning . During his development , he was frequently sedated after a breach in security , but as his capacity grew and his behavior became uncontrollable , the sedation had no effect . Later , during the Battle of Kamino , Subject 1157 was going to be released into the facility ' s training area , but before that could happen , his tank was hit by a Force push by an individual referred to as Subject 1138 , and Subject 1157 expired . Biography . Subject 1157 was a clone of Galen Marek , a Human male chosen as the Sith Lord Darth Vader ' s secret apprentice . He was held within a cloning tank at the cloning facility on the planet Kamino around one year before the Battle of Yavin . Like Marek , Subject 1157 was under the control of the Galactic Empire . As he was growing , he received genetic memory imprints . A cloning technician kept a log recording the development of Subject 1157 . During Phase 13B of his development , Subject 1157 showed signs of sporadic consciousness , followed by tremblings . He was subjected to mindscans to ascertain the cause of the tremblings . By Phase 16D , his vital signs pointed to complete motor control , and he was able to counter stressors from the genetic impulses and memory imprints . The cloning technician was pleased with 1157 ' s development compared to other subjects and subjected 1157 to growth acceleration . After entry 21 in the technician ' s log , the technician updated a nearby training room with an isolation chamber and PROXY droid s in response to Subject 1157 ' s development . The day after entry 25 , Darth Vader was going to visit Subject 1157 , who was more stable by that point , and the cloning technician said he was proud of the scientific advancements in the process . By entry 32 , 1157 was experiencing " hallucinations " or " memories , " shocking him . He learned to manipulate Force lightning and used it to crack the inside of his tank . Prior to entry 42 , some equipment was damaged by lightning ; as a result , the medical droids , including a 2 - 1B droid , were forced to manually administer treatment , leading to inconsistency in his training . When not sedated , Subject 1157 could access the Force and reach outside the tank , attacking the droids . He had access to a number of minigames to test his reflexes , including mazes , pong , and others which increased in difficulty over time , and he could hear sounds from the outside world . During Phase 22A , genetic imprints brought on hallucinations about a Human woman and caused anxiety to the clone . In entry 29 , the technician mentioned the anxiety and planned on enacting new desensitization techniques . A breach in security — the escape of another clone — resulted in systematic restraints on 1157 . Darth Vader visited his tank around that time . By Entry 65 , the technician hypothesized that the clone would end in aberration , and experimented with new sedation techniques . Although the restraints weakened the clone , they did not change his temperament . Subject 1157 had periodic visions of the life of Galen Marek and the escaped clone . Some of the visions seemed to be of events happening at that moment . The cloning technician frequently sedated or activated restraints for Subject 1157 in response to the clone ' s unsteady emotions . Subject 1157 also received a stormtrooper guard . The cloning technician revealed in the first entry for phase 37B that constant droid attention was needed , as the Subject ' s behavior was incontrollable , and Subject 1157 ' s capacity meant that sedation had no effect . The clone also managed to damage the inside of his tank with Force lightning again . Just prior to entry 77 , an evacuation order had been given in response to the return of " Subject 1138 , " the clone who had previously escaped the facility , and the cloning technician was going to work on getting Subject 1157 to accept the memory imprint . As a result , Darth Vader had ordered the abandonment of all nonviable test subjects , and Subject 1157 was going to be released into the training chamber . The cloning technician hoped his life ' s work had not been in vain during those last minutes . Later , as the Battle of Kamino went on outside Subject 1157 ' s tank , a Force - wielding individual referred to as Subject 1138 approached the tank . As the individual approached , Subject 1157 pounded the inside of the tank with his hand in vain before the other individual hit his tank with a Force push . Subject 1157 expired . Personality and traits . Subject 1157 , like his clone template , had light skin , and had a stable capacity early in his development , unlike other test subjects . The cloning technician who monitored Subject 1157 was pleased at the clone ' s developments . During his development , Subject 1157 underwent rapid acceleration and received memory imprints . As time went on , he developed hallucinations , which disturbed him and caused tremors in his body . As a result , he was systematically sedated . He grew in capacity , though , and sedation had no effect . Until the end of Subject 1157 ' s life , the cloning technician tried to get the clone to accept the memory imprints . Powers and abilities . Subject 1157 was Force - sensitive as was his template . The clone learned to manipulate the Force to affect the environment outside of his tank and could also use Force lightning . Behind the scenes . Throughout summer 2010 , Subject 1157 was a character in the official website , for the LucasArts " " video game , before the site changed to an interactive database and removed the content . During the time when the website featured Subject 1157 , the viewers saw the room outside of a tank from 1157 ' s perspective , and could listen to audio tapes about his development , view visions of the player character — Starkiller , another clone of Galen Marek — and view a countdown clock , which listed the time in Aurebesh before the site ' s next update . Successful completion of minigames such as mazes or pong unlocked visions , which served as teasers for the game itself and came from in - game videos as well as scenes from 2008 ' s " " . The website was frequently updated with new content . The content was also accessible through " Star Wars : The Force Unleashed II " cloning tank website , and the last video is still active on that site . After " Subject 1138 , " revealed in " The Force Unleashed II " to be Starkiller , destroyed the tank , viewers were no longer able to view the visions or listen to the audio recordings . Though it was still running , the countdown clock to the next update was also no longer readable . It is not possible to recreate this scene in the actual game , as the only action that can be taken while passing the cloning tanks is walking , and Subject 1157 is not referenced in the game .