B2 Super Battle Droids are well known to shoot from their wrist blasters and rockets. They are an upgraded version of the B1 battle droids, with superior weapons, armor and silver plating. The Super Battle Droids unique explosive attack revolves around wrist rockets that can be loaded into the weapon. Wrist Rockets do a considerable amount of damage and can't be defused by the officer class, and can strike without warning unlike other Enforcer explosives. This, combined with the wrist blaster doing higher damage than the average blaster, higher rate of fire when Overload is activated, and extra health that can be gained with Fortify, means that this class is best played aggressively to overwhelm opponents. Its bulky upper body means that it's easy recognizable at any distance, and also means that it is easy to hit.
The Super Battle Droid's voice is from the 2008 animated television series Star Wars: The Clone Wars, which had B2 Super Battle Droids speaking with a low, deep voice. In contrast, Revenge of the Sith had B2's speaking with higher-pitched voices.