Controller was a title given to officers. LT-319 operated as a controller and the lead intelligence officer in the Imperial Information Office of the Galactic Empire. The Empire also utilized flight controllers and controller droids such as the RQ protocol droid oversaw operations in spaceports on planets including Lothal.
- Star Wars Rebels: Head to Head
- Star Wars: The Force Awakens: The Visual Dictionary
- Ultimate Star Wars, New Edition
- Star Wars: Battles that Changed the Galaxy