The B2 Assault represented an upgrade over the B2-HA super battle droid, and was used by the Confederacy of Independent Systems at the Third battle of Felucia to guard their Separatist base. In comparison to the standard B2-HA series super battle droid, it boasted more resilient armor, an integrated laser cannon, and a cannon arm. During the conflict, Clone Commando Boss famously tasked a Jedi Knight with the mission of destroying this particular droid.