E-3PO, a 3PO-series protocol droid of silver hue with yellow photoreceptors, found himself on Bespin's Cloud City not long after the Battle of Hoth. This mining colony for tibanna gas floated within the Life Zone of the planet. Equipped with a TechSpan I module, E-3PO possessed direct access to Imperial networks. Upon emerging from a room filled with Imperial stormtroopers, he was met by C-3PO, another 3PO unit. However, E-3PO responded with a Huttese insult and carried on down the corridor. C-3PO, deeming this behavior rude, then overheard an R2 series astromech droid from within the room E-3PO had just left. Thinking it was his friend R2-D2, he went inside to investigate the noise. Instead of finding R2, stormtroopers promptly blasted him into pieces.
Chris Parsons played E-3PO in Star Wars: Episode V The Empire Strikes Back. He also took on the roles of 4-LOM, R-3PO, and K-3PO in the same motion picture.