- "Open fire!"
OOM-9 was an OOM command battle droid that led the battle droid army of the Trade Federation during the Invasion of Naboo.  After Jedi Master Qui-Gon Jinn and his apprentice returned from Coruscant with Queen Amidala and gained the help of the Gungan Grand Army, OOM-9 was sent, with the Trade Federation's Droid Army to destroy the gungans. He oversaw the battle while inside his own personal Armored Assault Tank and was able to create a victory for the Federation, but this was short lived, as OOM-9 and the rest of the battle droids were shut down when Anakin Skywalker destroyed the Droid Control Ship above Naboo.
- Star Wars: Episode I The Phantom Menace (First appearance)
- Ultimate Star Wars (First identified as OOM-9)