- "I… I don't know. I was doing the things I always do after a mission."
- ―Jester, being questioned by Cody and Rex
During the Battle of Christophsis, Captain Rex and Commander Cody pinpointed an irregular wavelength in external communications to Slick's barracks, fueling their suspicion that someone in the platoon was a Separatist spy. Consequently, the two officers called Jester and the other members of his platoon back to their quarters to individually interrogate them about their whereabouts earlier that evening. Jester was nervous about speaking to his commanding officers, but fellow trooper Sketch vouched for his habit of regularly cleaning his blaster. When Jester presented his freshly scrubbed weapon to Cody as evidence, he was cleared of suspicion. Eventually, Slick was revealed to be the spy and escaped from the barracks, following which he sabotaged the Republic's gunships, AT-TE walkers, and weapons depot. When Gus spotted Slick heading for the base's command center, Rex and Cody ordered Slick's platoon to secure the perimeter. The two officers thereafter managed to detain Slick.
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