Unlike the spindly battle droids, whose humanoid builds allow them a degree of versatility, droidekas are designed with one sole function in mind: the complete annihilation of their targets. Slung at the end of heavy arms are immense twin blasters, which unleash destructive energy at a pounding pace. The destroyer droid can completely envelope itself in a globe of protective energy via its compact deflector shield generators, though at the expense of its mobility. Although slow and awkward on its three-legged gait, the droideka can transform into a much speedier, disk-shaped form.

Rather than use flesh-and-blood warriors, the Separatists prefer mindlessly loyal soldiers that are easily controlled. The soulless ranks of their armies are dominated by tall, thin B1 battle droids built as mechanical imitations of their Geonosian designers. Battle droids can be controlled by centralized command centers such as the Trade Federation’s enormous Droid Control Ships, or programmed for independent action. They often suffer programming glitches that manifest as personality quirks. Battle droids are dim-witted and no match for clone troopers or Jedi, but they weren’t designed to be smart – they were designed to overwhelm Republic civilians through sheer numbers, something they do very effectively.

An idyllic world filled with vast green valleys and flowing waterfalls,Kiros was the site of a colony of Togruta artists, led by Governor Roshti. The artisan colony tried to avoid taking sides in the Clone Wars, but Count Dooku arrived on-planet with a droid army, and "insisted" the Togrutas accept his offer of protection. Within ten standard rotations, all 50,000 Togruta colonists had vanished.