The AI-4 droid brain was a model of droid brain manufactured by Cybot Galactica. The AI-4 was installed in Arakyd Industries' Agonizer-6 nerve disruptor. A fully-functional droid brain with a vocabulator, audio sensors, and an integrated dataport. The AI-4 did not possess an elaborate personality matrix, instead being coldly impersonal and focused on its assigned duties.[1]