Prudii Skirata Prudii Skirata , formerly known as Null - 5 or N - 5 was one of twelve Null - class ARC troopers created for use in the Grand Army of the Republic as a lieutenant . Due to the genetic tampering , Prudii and his five brothers had slightly improved muscular structures , eidetic memory , and an enhanced intelligence that was at least a 35 % higher intelligence score over the ordinary clones . When he and the other Nulls were two years old , Kal Skirata saved them from termination by the Kaminoan clone scientists . After that , they remained loyal only to Skirata . Biography . After the First Battle of Geonosis , Prudii and his brothers were scheduled for chill - down because they were uncommandable except by Kal Skirata . Skirata saved them from chill - down and eventually the Null Squad became Clone Intelligence Units ( MILINT ) who worked for the Special Operations Brigade under the command of Jedi General Arligan Zey ; as well as Kal Skirata ' s " private army " , searching for the Kaminoan clone technician Ko Sai in order to force her to stop the age acceleration process . Prudii specialized in sabotage of droid factories . After installment as military intelligence unit , he spent the first year after Geonosis with sabotaging major droid factories throughout the galaxy , visiting 49 different planets and possibly interrogating and assassinating an important Separatist metallurgist who gave him vital clues on the metallurgic structure of droids . Instead of blowing the factories up , he developed a technique that couldn ' t be detected by Separatist quality control . Mereel used to call this technique " Prudii ' s patented droid remover " . He wore specialized ARC trooper armor with stealth coating that couldn ' t be detected by droids and thus enabling him to enter droid factories unnoticed . He then sliced the main computers and slightly changed the recipe for creating droids by adding 5 % extra carvanium . On the battlefield , these droids crumbled when hit with any weapon . His sabotage acts were so successful that the kill ratio for clone troopers in the field was raised from 1 : 20 droids to 1 : 50 droids during the first year of the Clone Wars . 460 days after Geonosis , he trained clone commando RC - 3222 on Olanet in his sabotage technique . Together they entered the droid factory on Olanet , which was regarded as a high value target by military intel , and sliced the main computer . Atin then returned to his squad at Coruscant HQ and introduced Omega Squad to the new technique while Prudii continued his work . In addition , he then joined his brothers in the search for Ko Sai . At the conclusion of the Clone Wars , Prudii extracted to Kal Skirata ' s haven of Kyrimorut on Mandalore . Personality and traits . " Prudii " means " shadow " in Mando ' a . He was completely fluent in Mando ' a because Kal Skirata taught this language to all his Null ARCs , together with the Mandalorian culture . Atin described Prudii as a " glib cynic " ( as well as adoring son when facing Kal Skirata ) . Prudii hated being called " Sir " or " Lieutenant " by other clones because he was of the strong opinion that all clones were brothers — even the Alpha ARCs , who always appeared to have some personal differences with the Null ARCs . Atin had the impression that Prudii looked slightly older than his brothers Ordo and Mereel .