Droid brains, sometimes referred to as data-brains, were a form of processing computer usually used in droids. They could also be used in starships, and the modified YT-1300 light freighter known as the Millennium Falcon was equipped with three: an R3-series astromech droid's brain, a V-5 transport droid brain and a slicer droid brain.
- Obi-Wan & Anakin, Part III
- Obi-Wan & Anakin, Part IV
- Lords of the Sith (Mentioned only)
- "Stories in the Sand"—From a Certain Point of View
- Moving Target: A Princess Leia Adventure (First appearance)
- Aftermath: Life Debt (Mentioned only) (First identified as data-brain)
- Star Wars: Absolutely Everything You Need to Know (First mentioned)