Unidentified OOM security battle droid 4

"Sir, a mine in sector 9G was just detonated."

- The droid speaking with Osi Sobeck.

This OOM security battle droid was stationed on the Separatist planet Lola Sayu in the Citadel prison around 21 BBY at the time of the Battle of Lola Sayu.

Biography
During the imprisonment of Jedi general Even Piell by the Separatists in the Citadel prison on Lola Sayu, this Security droid along with many others were under command of prison warden, Phindian Osi Sobeck. When an elite team of clone troopers led by Obi-Wan Kenobi and Anakin Skywalker arrived in the detention center and rescued Piell, they split up into two squads. The one led by Obi-Wan Kenobi was eventually captured by Sobeck and this droid along with a fellow one were tasked with escorting the prisoners to interrogation. Along the way, they were intercepted by R2-D2's battle droid squadron, who were posing as confederate droids, and were requested to relinquish the prisoners to them. These droids complied and the prisoners were taken to the landing bay by R2's squad.

Behind the scenes
This droid, like every battle droid in The Clone Wars movie and The Clone Wars TV series, was voiced by Matthew Wood. His name was never given.