BB-4 was a tan-plated BB-series astromech droid in the service of the Resistance. Similarly to 2BB-2, another BB unit in the service of the Resistance, the droid's sensor was not fully encased in its head. BB-4 also had a Resistance crest on its body.
- (First identified as BB-4)
- BB-8 on the Star Wars App-Enabled Droids by Sphero (Screenshot) (First pictured)
- Star Wars: The Last Jedi: Ultimate Sticker Collection
- Star Wars: The Last Jedi: The Visual Dictionary
- Star Wars: Droidography