During the Great War, the zerg in Zasz's Garm Brood went feral after Dark Prelate Zeratul slew Zasz on Char. These renegade zerg posed such a threat to the Swarm that Daggoth ordered the entire brood eradicated. In the aftermath of Kerrigan's de-infestation during the Second Great War, the Swarm splintered into multiple factions, and many zerg turned feral. The zerg on Char that had previously been guarding Kerrigan immediately turned feral and began devouring everything in sight, including the corpses of zerg killed by Raynor and his men during their escape.