Unidentified B1 battle droid 2 (Umbara)

"Uh, sir, there are clones in the main hanger."

- This droid speaking to a tactical droid.

This battle droid was stationed on the bridge of a Separatist supply ship during the Battle of Umbara. When the supply ship was infiltrated by three Galactic Republic clone troopers flying captured Umbaran starfighters, this B1 battle droid was alerted that the ship has been infiltrated and informed the Tactical droid that was in command. He later informed the command droid that the clones were heading to main reactor. This droid was destroyed along with the supply ship when the clones destroyed the ship's reactor.

Behind the scenes
The B1 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.