Eftersom slutet av Episod III hade C-3PO sitt minne torkades av Captain Antilles
“How lovely!” C-3PO exclaimed. “His daughter is the child of Master Anakin and Senator Amidala,” he explained to R2-D2. “I can hardly wait to tell her all about her parents! I’m sure she will be very proud-“
“Oh, and the protocol droid?” Senator Organa said thoughtfully. “Have its mind wiped.” The captain saluted. “Oh,” said C-3PO. “Oh, dear.” - Star Wars: Revenge of the Sith - Novelisation