"Insurrection" features two further cerebrates, Nargil and Auza. A second Overmind is created in "Brood War", formed from the merging of several cerebrates. The Overmind controls the Swarm through secondary agents called cerebrates. Daggoth is the most strong-willed and ferocious of the cerebrates. Sarah Kerrigan replaced the cerebrates with "brood mothers". In the pre-conflict Swarm, this position was filled by cerebrates. The cerebrates were eliminated from the Swarm but broods such as the Char Brood remained.