Chopper, Artoo and Threepio take the spotlight in the latest Star Wars Rebels promo video, ‘Droids’. From earlier trailers, we already knew that R2-D2 and C-3PO would be making an appearance in Rebels, but this seems to hint at a larger role in an episode arc. Star Wars Underworld guesses that these scenes are from the second episode, ‘Droids in Distress.’