The RA-7 Protocol Droid, was a low-level intelligence protocol droid used by the Galactic Empire to spy on officials. Thanks to the RA-7, many officers were often called to so called "business trips." Few ever returned. This droid had black plating, and were very similar in appearance to C-3PO, except for the head. RA-series protocol droids (unlike the minifigure) had special bug-like heads with large compound photoreceptors. Lego® included a minifigure of the droid in the Death Star play set.