E-3PO is an NPC, a submissive droid in Cloud City.
The Enemy Let Slip Edit
They all reached the inside of the city. "Leia" commented that Lando's aide was interesting. Lando explained that he rescued him from a prison camp run by General Grievous 20 years ago and that he'd been loyal to Lando ever since. Robot said he was a man, but now he was Robot. 3PO told him, "Droid power, brother!" "Freddo" told Lando that 3PO was very keen on Droid rights. Lando said their droids were treated in full compliance with the Servitor Droid Maintenance Guidelines. 3PO was distracted away from the others when she saw a droid similar to herself, E-3PO. C-3PO told E-3PO that she was here to liberate her. But E-3PO, talking in the most submissive terms, said she had to prepare a table for the masters' dinner, and left. C-3PO followed her to a room full of other droids. She tried to give them a rousing speech, telling them to overthrow their organic overlords. The droids shot C-3PO.