R6-H5, nicknamed Ar-Six, was the astromech droid of Jedi Master Kit Fisto. R6 accompanied its master on many missions during the Clone Wars aboard his Jedi starfighter. Ar-Six is a worrywart, which sometimes annoys Kit.

R7-D4 was an R-series astromech droid that served with the Kel Dor Jedi Master Plo Koon during the Clone Wars. After Koon lost his entire fleet to General Grievous and the Malevolence, joined Koon as the copilot of his Delta-7B Aethersprite-class light interceptor, the Blade of Dorin, flying alongside Jedi General Anakin Skywalker and Shadow Squadron on a mission to destroy the warship before it could take out the Kaliida Shoals Medical Center in the Ryndellia system. Similar to Anakin with R2-D2, Plo Koon refuses to have R7-D4′s memory wiped, as “that would erase his lively personality”.

R4-P17, nicknamed R4, was a feminine R4-P astromech droid that was assigned to Jedi Master Obi-Wan Kenobi, prior to and throughout the Clone Wars. She was destroyed by a buzz droid during the Battle of Coruscant. R4 was rebuilt with scavenged R2 parts as a gift for Obi-Wan from Anakin.

R7-A7 was an astromech droid with masculine programming who belonged to Ahsoka Tano. He shares his mistress’s rash, aggressive habits.

R8-B7 was an R-series astromech droid, used by Jedi Master Mace Windu during the Clone Wars. During the war, R8 accompanied Windu to the planet Vanqor, where they looked for survivors of the crash of a Venator-class Star Destroyer Endurance. Alongside Anakin Skywalker and fellow astromech R2-D2, R8 and Windu searched the wreckage of the cruiser, unaware of a pair of gundarks stalking the group. After the Jedi journeyed further into the crash site, the gundarks attacked the two droids and tore apart R8 during the struggle.