Outraged at the fall of Aiur to the zerg, some of the Khalai adopted the ways of the Nerazim and returned to Aiur to wage a secret guerrilla war. Due to their small numbers, they employed warp technology to save themselves from death on the battlefield so they could fight another day. The Daelaam led by Artanis later made contact with them again and brought them back into the fold as cloaked warriors.