Fixer

[close] RC-1140, also known as Delta-40 and Fixer, was an elite clone commando in the Grand Army of the Republic during the Clone Wars. Although he hated the use of nicknames, he was known as Fixer to the other commandos in his squad, because of his talent for fixing and slicing all things mechanical.
Unlike his fellow squad members who had developed distinct personalities, Fixer was a gruff, by-the-book clone; however he was responsible for hacking the clone dorm terminals when in training. His personality appeared to have more in common with the standard clone troopers than the individualized commandos. He was the only one of Delta Squad who persisted in using numbers over names. Fixer was often the one urging his squad onwards during a mission, although he rarely socialized with his fellow commandos outside of battle. He and Scorch were actually very close to each other, like best friends. Unlike his squad-mates, Fixer didn't appear to enjoy the heat of battle. Because of his by-the-book attitude he was selected for second in command. He was probably of corporal rank.