A New AllegianceEdit
The cerebrate was part of Daggoth's Renegade Swarm after the death of the first Overmind. During the Brood War, Sarah Kerrigan seized control of the cerebrate by severing its ties to the Second Overmind. She immediately used it to quell the disruption to her Tarsonis hive clusters caused by the psi disrupter. Kerrigan secured the aid of Raynor's Raiders and Emperor Arcturus Mengsk against the UED Expeditionary Fleet. The cerebrate took control of Braxis zerg liberated by Dominion psi emitters and used them to destroy the psi disrupter. Later, it helped raid the Kel-Morian Combine alongside protoss Praetor Fenix. The Combine's resources were needed for the coming assault on UED-held Korhal. Kerrigan ordered the cerebrate to infest as many command centers as possible.
The Liberation of KorhalEdit
The cerebrate spearheaded the assault on Augustgrad, Korhal. The UED and their zerg slaves were routed, and control nominally returned to Mengsk and the Dominion. Kerrigan's allies were her next targets. She ordered the cerebrate to assail Dominion and protoss forces who were resting after the victory. General Edmund Duke and Fenix were both killed before the zerg withdrew to Tarsonis.
The UED were not yet out of the fight. UED slave broods descended on Kerrigan's Tarsonis hive clusters. The cerebrate broke the assault by killing the intermediary UED scientists with the attack force. The cerebrate oversaw the destruction of Talematros on Shakuras. This spectacular diversion allowed the recovery of Matriarch Raszagal. The cerebrate used the coerced Dark Templar to assault Char and kill the Overmind.. After the Overmind, Dark Prelate Zeratul stole back Raszagal and Kerrigan ordered the cerebrate to pursue them. The newly-reunited Swarm returned to Char and were attacked by the Dominion, protoss, and UED simultaneously. The cerebrate defeated all three at the Battle of Char Aleph. The Brood War was over.