The AAT driver battle droid was a specialized class of B1 battle droid designed for operating the Armored Assault Tanks (AAT) of the Confederacy of Independent Systems. The droids were coloured with dark green facial and torso markings.
During the Republic's Mission to Rugosa, several AAT drivers were deployed under the command of OOM commander 224. They were tasked with eliminating Jedi Master Yoda and his clone trooper escorts in order to prevent the Jedi from negotiating a treaty with King Katuunko of Toydaria. They failed in their mission and several AAT drivers were destroyed by the diminutive Jedi Master.