The EV-series droid overseer, also known as the EV-series supervisor droid, represented a model of supervisor droid produced by MerenData. This droid possessed a lanky physique. One such droid, specifically EV-9D9, was employed by Jabba Desilijic Tiure as the head of Cyborg Operations within his palace.
Around the time of 9 ABY, EV-9D9 took on the role of a bartender at Chalmun's Spaceport Cantina.
During the period of the Galactic Civil War, the Pyke Syndicate made use of multiple EV-series supervisor droids, which were black-plated with orange stripes on their shoulders, inside the Coaxium Mines of Kessel, where they served in the Kessel Control Center.
In various earlier Star Wars productions, EV-series supervisor droids have been depicted working as bartenders. Within the Legends video game adaptation of the 1999 movie Star Wars: Episode I The Phantom Menace, an EV unit identified as EV-7G7 served as a bartender at the 7-Gee Lounge located in the Mos Espa Grand Arena. Another EV unit, known as Isaac, was a bartender on the Khetanna during the "Fett Defeated" segment of Robot Chicken: Star Wars Episode III, a non-canon Robot Chicken special that was originally broadcast on December 19, 2010.