- "We got to the mess at the same time, got our grub, and sat down together."
- ―Sketch supports Punch's alibi
"Sketch" was the nickname of a Clone Trooper who served in Clone Trooper Sergeant Slick's platoon during the Clone Wars. In 21 BBY, he was dispatched with a Jedi-led contingent of the Grand Army of the Republic to liberate the planet Christophsis from the Confederacy of Independent Systems. Sketch joined his unit on reconnoitering the planet for a strategical ambush site, but the Confederacy was able to ambush the Republic forces. After the clone troopers returned to the base, Sketch and fellow trooper Punch went to the mess hall. When Clone Captain Rex and Clone Commander Cody interrogated the members of Slick's platoon to locate a possible Confederate spy, Sketch vouched for trooper Jester, and Punch and Sketch served as each other's alibis. Trooper Chopper claimed to have immediately gone to the mess hall, but Sketch objected and stated that he had come in later. However, Sergeant Slick himself was later revealed to be the turncoat and was apprehended.
- The Hidden Enemy (First appearance)