CG-67 was a protocol droid that belonged to a Gran trader residing on Pantora. This occurred not long after the conclusion of the Clone Wars. Her duties included overseeing his other three droids: Clink, 225, and DK-3, who were astromechs. The trader, believing Echo to be a droid, purchased him and subsequently tasked him with supervising the existing droids. CG-67 asserted her authority until she discovered Echo's true nature, contrary to the trader's understanding. She planned to expose the deception, but Echo used his blaster to threaten her. Soon after, the Bad Batch's shuttle, named Marauder, required urgent repairs. Echo removed the restraining bolts from the droids and instructed them to repair the starship. After the Marauder was fixed and ready, Echo gave CG-67 back her position of leadership over the droids.
The character CG-67 made her debut in the Star Wars: The Bad Batch episode titled "Cornered," which was the fourth episode of the show. It was made available on Disney+ on May 21, 2021. Grey Griffin provided the voice for CG-67, as acknowledged in the episode's end credits.
Despite being programmed as female and voiced by Grey Griffin, the Polish dub of CG-67 employs he/him pronouns and features a male voice actor, Sebastian Machalski.