B2 Battle Droids, also know as Super Battle Droids, were the walking tanks of the CIS Army. Able to kill over 3 clones with just 1 Droid, B2's were a grave sight on the battlefield from troopers, weather they were deployed from pods or engaged on the ground, troopers would encounter these droids just as often as the B1 Battle Droid.
B2's were equipped with Wrist missile launchers, taking out clones with a single blast. Some B2's were upgrade with single cannon arms able to fire bigger missiles with more ammo as well as speed.