The F series repair droid represented a specific type of maintenance droid. A minimum of five of these droids were employed by the Star Tours travel company.
Individual F series droids were typically recognized by the initial three characters of their designation (the letter "F" succeeded by numerical digits), which then had three more uppercase letters and ended with a lowercase "x." They typically had a silver-colored chassis, photoreceptors in various colors such as red, green, or blue, and trim available in red, gold, or blue.