Rokarr is a broodmother. Her brood, rich in mutalisks, attacked Terran Dominion forces at the Sigma Centari platform, but the assault stalemated due to the presence of missile turrets. Rokarr assisted Sarah Kerrigan in her assault there. Kerrigan and Abathur ordered the destruction of local feral brood lords, whose essence was then used to create more of them. The brood lords easily destroyed the Dominion fortifications.