Unidentified OOM security battle droid 2

"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 Osi Sobeck in the Citadel's command room and controlled the Citadel's Electro-mine sensors.

Battle of Lola Sayu
When the elite team of clone troopers led by Obi-Wan Kenobi and Anakin Skywalker arrived on the planet in an attempt to free the captive Even Piell, one of the clone troopers accidentally hit an electro-mine while free climbing the Citadel's walls. This droid proceeded to warn Osi Sobeck of this incident and he ordered that the whole Citadel be placed under alert.

Behind the scenes
This OOM security battle 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.