B2 Super Battle Droid
The SBD was first deployed by the Trade Federation and subsequently adopted by the Techno Union and Confederacy of Independent Systems. They saw extensive action during the Clone Wars as ground troops.
Super battle droids have a humanoid shape. They are larger than B1 battle droids and more heavily armored, especially around the torso; allowing them to withstand some small arms fire. Super battle droids are armed with a dual blaster mounted in the forearm and can operate customized blaster rifles.
B2 Super Battle Droids appear to be marginally smarter than B1 Battle Droids.