The B2-series super battle droid, also referred to as the B2 super battle droid (SBD), represented an enhanced iteration of the B1-Series battle droid, boasting improved weaponry and armor. Their production commenced following the Invasion of Naboo, which highlighted the necessity for more resilient droids. The Trade Federation, the Techno Union, and subsequently, on a far larger scale, the Confederacy of Independent Systems all utilized B2s. Later, some units were reactivated on Mustafar under the command of Gizor Dellso and other members of the Separatist holdouts, while the Galactic Alliance also deployed certain B2 units during the Yuuzhan Vong War.

A significant weakness of the standard B1-Series battle droid was its dependence on a signal from a Droid Control Ship; disabling these ships rendered the battle droids ineffective. To address this issue, the super battle droid was designed with greater autonomy and did not rely on such a signal. However, a command signal still optimized the droid's performance. Without it, they tended to lose track of enemies once they moved beyond their line of sight. Furthermore, the super battle droid's robust frame, constructed from duranium and phrik, was larger and more heavily armored compared to that of a B1.
In contrast to its predecessor, the B2's sensitive processing unit and signal receptor were situated deep within its torso, providing enhanced protection from enemy fire. Dual, fully automatic small blaster cannons were mounted on either the right or both forearms, as demonstrated in the Mission to Rugosa. In some instances, these weapons were replaced by a TriShot weapon system. The B2-HA series super battle droid's left forearm was substituted with a rocket launcher. While they could utilize external weaponry (except in rocket launcher configuration), their large hands struggled with smaller blasters. Instead, they were equipped with specialized blasters that only responded to signal emitters embedded in their hands. To maximize efficiency, they incorporated many B1 components. Their feet also featured specialized equipment for navigating challenging terrains, such as climbing claws. Moreover, their arms were modular, allowing for the exchange of blaster cannons for other specialized armaments.
When not actively using their integrated blaster cannons, their right forearm remained locked in an upright position. Prior to deployment on the moon Ohma-D'un, a number of B2 units underwent modification to include swamp gas sprayers. Other modified units employed mortar launchers, stationary repeating blaster cannons, or built-in flamethrowers in place of blaster cannons, and were mounted on orrays.
As heavy infantry droids, B2s could endure significantly more damage than their fragile predecessors. Even after suffering defeat, they retained the ability to detach their torsos and continue attacking, albeit with reduced combat effectiveness. Despite these characteristics, certain models exhibited low heat tolerance, resulting in them spontaneously combusting upon contact with heat.
The majority of B2 droids produced after the Battle of Geonosis possessed the capability to communicate with one another using a simplified version of Galactic Basic Standard.
The B2 was preceded in development by a beta prototype that saw limited use. Soon after the events of the Invasion of Naboo, the Trade Federation was actively researching a new type of battle droid. Commandos belonging to the Royal Naboo Security Forces seized the research facility, uncovering data related to this novel battle droid.
During their initial deployment during the Kashyyyk Trade Rebellion in 28 BBY, the B2's updated design proved to be more than a match for the native Wookiee warriors.

Super battle droids were extensively deployed throughout the Clone Wars as soldiers within the Confederacy, fighting alongside their smaller B1 counterparts and the formidable droidekas. Most super battle droids were painted in a dull silver color, possibly to distinguish them from the tan color used on the standard battle droids of the Confederacy, or perhaps due to the different manufacturers. They were occasionally painted with green markings for camouflage purposes.
Some Super Battle Droids were deployed as scouts to survey the plains of Geonosis, primarily due to their raw strength and capacity to destroy smaller ground targets. This pleased the local Geonosians affiliated with the CIS, who sometimes used B2s as "spire guards."

The droids eventually became capable of expressing certain emotions, despite exhibiting catastrophic grammar. They displayed a more aggressive temperament compared to the B1 model, even going so far as to attack allied units to quickly engage enemy targets, as observed during the First Battle of Geonosis. Furthermore, they were considerably more durable and intelligent, easily withstanding light blaster fire. Modified B2 droids, featuring fingered hands and additional sensors, were deployed on Ohma-D'un to test a new bio-agent.
Super battle droids were often retrofitted with components designed to counter specific adversaries. However, this practice was introduced late in the war and had a limited impact on the conflict's outcome. One notable model change was the introduction of the grapple droid, which featured heavier armor and a larger frame. This droid was programmed for close combat, capable of withstanding lightsaber strikes and disabling enemies using its electrified claws. Another specialized variant was involved in the release of the swamp gas toxin on Ohma-D'un. The D-60 assault droid, another variant, was deployed during the Battle of Cartao by CIS forces. Two jetpack-equipped variants of the droid, the jump droid, and the rocket droid, were also developed. Other variants included super battle droids armed with various weapons, such as the Mortar Super Battle Droid, the Anti-Air Super Battle Droid, and the Repeater super battle droid. A more heavily armed and armored version was the Heavy super battle droid, and orray troopers were B2 droids armed with flamethrowers which rode orrays. These variants were manufactured at Geonosian troop centers.

During the third battle of Felucia, the Separatists deployed an experimental super battle droid model. This model was the B2 Assault, an upgraded version of the existing B2-HA super droid. During the battle, the CIS also deployed the B2 soldier, which was utilized to attack a Republic outpost manned by Graul Company, and these units featured green markings.
The Techno Union designed the B2 battle droid, using the B1 design as a starting point. After successful prototype testing, Count Dooku negotiated an agreement with Poggle the Lesser, Archduke of Geonosis, to initiate mass production of these droids.

Subsequent orders were placed on worlds controlled by Baktoid, leading to the production of quadrillions of B2s on the assembly lines. Despite their advantages and ease of manufacturing, they were not produced as widely as their less capable B1 counterparts.
During the Clone Wars, B2s became a vital component of the Separatist Droid Army. They participated in numerous battles throughout the conflict, including the Battle of Geonosis, Battle of Muunilinst, Battle of Coruscant, and Battle of Kashyyyk, as well as countless others across the galaxy. B2s served as targets for clone sharpshooters during training exercises. A training model was used on Kamino for the training of Clone cadets.
Following the execution of the Separatist Council by Darth Sidious's new apprentice, Darth Vader, the B2s, along with the rest of the droid army, were deactivated.
A few years after Order 66, Gizor Dellso reactivated a droid factory located on Mustafar. Included among the reactivated production lines were a few dedicated to manufacturing B2 battle droids, providing Dellso with a sufficient number of B2s for his droid army.
In the aftermath of the Clone Wars, several entrepreneurs discovered warehouses stocked with these droids. Many were subsequently sold to gangs or prominent crime lords for use as enforcers. Others were utilized by various Separatist holdouts. Similar to some B1 battle droids, B2s also served as guards within the Death Watch bunker on Endor. Borvo the Hutt possessed several super battle droids to safeguard his vault on Naboo.
During the Yuuzhan Vong's invasion of the galaxy, many B2 droids employed by the Galactic Alliance formed a unit known as the Orange Panthacs, which repelled an occupying force of Fire Breathers on Mantessa.

The B2 super battle droids made their initial appearance in the 2002 video game Star Wars: Jedi Starfighter, which was released shortly before the theatrical release of Star Wars: Episode II Attack of the Clones_.
Animatics created for Star Wars: Episode II Attack of the Clones reveal that the original intention was for the super battle droids to wield dual E-5 blaster rifles, rather than having integrated wrist blasters.
In LEGO Star Wars III: The Clone Wars, the rocket super battle droid launches standard rockets instead of pink ones.
Within the Star Wars: Battlefront game series, B2 super battle droids are deployed as standard infantry units, while B1 battle droids appear in several specialized variants, a departure from the movies where B1s are more widely used.
Despite the Databank entry for the B2 super battle droid indicating its ability to operate independently of a master control signal, the Star Wars: Republic Commando mission "The RAS Prosecutor" depicts all B2 units remaining aboard the Prosecutor as being deactivated upon the destruction of the Lucrehulk-class Droid Control Ship.
The video games Star Wars Battlefront: Renegade Squadron and Star Wars Battlefront: Elite Squadron include the designations "Super Battledroid Mk II" and "Super Battledroid Mk III" within the personalization editor, although the customization options were determined by the player.