Unidentified B1 battle droid 9

"Are the aqua droids prepared for phase two of the plan?" "Yes, mistress."

- Asajj Ventress speaking with the droid.

This battle droid was stationed on Asajj Ventress's Trident-class assault ship during the Battle of Kamino along with a fellow droid.

Biography
Before the assault on Tipoca City began, this battle droid accompanied Asajj Ventress on her Trident starship below the seas of Kamino in her infiltration mission, informing her that the aqua droids were ready for phase two of the invasion plan.

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.