The B2 Assault was a enhanced B2-HA series super battle droid that the Confederacy of Independent Systems deployed during the Third Battle of Felucia to patrol the Separatist base. It was equip with tougher armor, built in laser cannon and cannon arm than the B2-HA series super battle droid. During the battle the famed Republic Commando, RC-1138 commissioned a Jedi Knight to destroy this droid.