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.
In a pre-release version of Heart of the Swarm, Rokarr had a role in the Destruction of Worlds mechanic. The player could choose to send her to destroy either Nephor II or the Tyrador IX. Her name was initially spelled "Rokar"