In 19 BBY, the clone designated CT-0409, who adopted the name Slip, was serving aboard Venator-class Star Destroyer VZ-114 of Vice Admiral Edmon Rampart and witnessed him issue the order to orbitally bombard Tipoca City. He took part in the subsequent attack. Later, he was aware of the cover-up that Rampart attempted in order to pass the Imperial Defense Recruitment Bill.
Several months later, Slip was drinking at 79's, a cantina on Coruscant which catered to clone troopers, with fellow clone Cade. Cade was also present at Kamino, and announced his intention to whistleblow about the true nature of the operation, after Rampart had convinced the Imperial Senate that a storm had befallen Kamino and killed its inhabitants. He followed Cade out of the bar and tried to warn him about Rampart's unpredictable nature and cruelty towards clones, but Cade was suddenly killed by Clone X, a clone assassin sent by Rampart. Slip was able to escape on a speeder bike.
Senator Riyo Chuchi later visited 79's, in order to gauge the opinions of clones about their future within the Empire if Rampart's legislation, the Imperial Defense Recruitment Bill was passed by the Senate. When she had finished and the clones had dispersed, Slip informed her secretly about the true story behind Kamino's fate. He told her his designation, CT-0409, so she could cross-reference his story and prove that he had been present.
Slip then contacted Rex, a former Clone Captain who had become the leader of the Clone Underground, in order to arrange his escape from Coruscant, and they agreed to meet at a rendezvous point. However, he was being hunted by both the assassin and Senator Chuchi, who wanted him to testify to the senate that Rampart had ordered the destruction of Kamino and genocide of the Kaminoan population. He told Senator Chuchi that he had saved a backup of Rampart's ship's command log to its central system, which would contain the evidence needed to prove that the destruction of Kamino was deliberate. He was then killed by Clone X, who had followed the senator.
Serving Rampart during the incident on Kamino, Slip followed orders and allowed Tipoca City to be destroyed. However, after the incident, Slip's actions did not sit well with him or his friend Cade.
Slip looked out for Cade, warning him to be careful when he tried to expose Rampart's cover story for what truly happened on Kamino. Following Cade's death, Slip became determined to finish his friend's mission. Although he trusted Senator Chuchi enough to tell her the truth about Tipoca City and Cade's death, he primarily feared a similar retribution from Rampart. He was careful and paranoid, deciding it would be wise to leave Coruscant and contacting Rex to do so. Although he was stealthy enough to avoid Rampart's agents, he was unable to hide from Chuchi's guards, who discovered him and unintentionally allowed Clone X to discover him as well.
Slip wore the standard gray uniform of a clone officer. He was capable with a DC-17 hand blaster and also able to drive a speeder. He was a quick thinker, escaping from Clone X when pinned down by using a speeder as cover and eventually as a means to flee the area.