R7-Z0 was an R7-series astromech droid. The droid was primarily colored white, with a black dome and yellow-green access panels.
Behind the scenes
R7-Z0 has now been immortalized in the Star Wars: Legacy "Build-A-droid" collection. Found on the reverse of certain Legacy figure cards are five component parts that can be used to build four different Astromech droids, with R7-Z0 being one of them. The Legacy figures that contain these parts are: Ak-rev (left leg), Yarna d'al' Gargan (right leg), Bane Malar (main body), and Darth Vader (head and middle leg).