Unidentified B1 battle droid 3 (Umbara)

"Clones? Intruders!"

- The droid, realizing that the starships were controlled by clone trooper.

This battle droid was stationed in the hangar of a Separatist supply ship during the Battle of Umbara.

Biography
When the Separatist supply ship was infiltrated by three Galactic Republic clone troopers flying captured Umbaran starfighters, this B1 battle droid was the first to realize that the starships were in fact controlled by clones and not Umbarans and alerted the bridge. 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.