Cammy was a Holocam E-series droid who helped a Rebel agent to find and infiltrate an assassin droid factory on Tatooine. She also helped test the droids that the agent built, following them around as they went about their objectives.
Cammy was a a Holocam E-series droid manufactured by Trang Robotics, a Drewwa-based manufacturer. During the Galactic Civil War, that droid with a cheery female programming was acquired by the Alliance to Restore the Republic, a resistance group that tried to overthrow the dominant and oppressive Galactic Empire. The Alliance programmed her with basic mechanical, technical, and scientific knowledge so she could assist its secret operatives. Around 0 ABY, she helped a Rebel agent reprogram a hidden factory on the planet of Tatooine, where the Empire had designed a new series of assassin droids.