EV-A4-D

EV-A4-D, also known as A4-D or Ay-Four-Dee, was an A4 laboratory assistant droid who served the cyborg General Grievous of the Confederacy of Independent Systems as a medical/repair droid during the Clone Wars. As with many EV-model droids, a programming defect caused EV-A4-D to have a sadistic personality. Prior to his work with Grievous, EV-A4-D served as a supervisor in a hospital on the world of Tauber, but he was relieved from duty after ordering the medical droids under his command to operate on patients without administering painkillers. He was later purchased by the InterGalactic Banking Clan and absorbed into the Confederacy.

EV-A4-D was eventually assigned to work as the personal doctor of Grievous. Stationed in Grievous's castle on the third moon of Vassek, EV-A4-D became the facility's caretaker, managing the general's residence and working to repair any damage he sustained to his cyborg body over the course of the war. In 22 BBY, Confederate Head of State Count Dooku lured Republic forces to Grievous's castle in order to assess the general's abilities as the Supreme Commander of the Separatist Droid Army. During the confrontation with the Republic, Grievous was heavily damaged and was repaired by EV-A4-D to be able to confront the intruders once more. EV-A4-D later separated Nahdar Vebb and Kit Fisto, the two Jedi who were leading the Republic forces, allowing Grievous to defeat Vebb. However, as EV-A4-D monitored the castle's security cameras from the control room, he was decapitated and destroyed by Fisto.

The droid's body was later recovered by Grievous and reassembled. EV-A4-D then left Vassek, traveling with his master during his military campaigns serving as both doctor and advisor. EV-A4-D was present alongside Grievous during the siege of Dorin, during which he informed the general of a communication from Count Dooku's assassin, Asajj Ventress.

Text and facts from the “EV-A4-D/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.