BX-00 functioned in multiple roles for Baron Gavern Starlock, acting as his chauffeur, protector, assistant, and assassin. While piloting Baron Starlock's hovercraft, it attempted to run down both C-3PO and R2-D2. Subsequently, following Starlock's commands, it made an attempt to murder Prince Jagoda, but C-3PO intervened and foiled the assassination.