The plasma battle droid was a gargantuan, 12-foot version of the standard B1 battle droid used by the Trade Federation. They fired lightning-like plasma blasts that were powerful enough to overwhelm even a Jedi lightsaber. They were designed to disrupt enemy infrastructure, and as a result were poorly-defended. These rare units were distinguished from their B1 battle droid cousins by the green coloration of the droid's shoulder plates and enormous height. Plasma battle droids' blasts and appearance made them both formidable and deadly, however they were extremely inaccurate as well as clumsy.