OOM officer droid

The OOM Command Series Officer Droid served the Trade Federation as commanders for their droid armies. One such droid led the ground forces at the Battle for Naboo and was known as OOM-9 who developed a reputation for efficiency after successfully defeating the Gungan Grand Army however when the Trade Federation Droid Control Ship was destroyed OOM-9 was deactivated due to no signal being recieved. Despite this, his success lead to further OOM Command series Officer droids being used as battle droid leaders in future battles]].

Source

 * Star Wars: Galactic Battlegrounds - Clone Campaigns