|Hybrid Breeding Program|
|De facto leader|
The program had been established by the Second Great War, and was headed by Emil Narud. The hybrids were created through splicing zerg and protoss DNA. This was technology that was beyond the scope of terran technology. Mengsk believed that the hybrids would follow his orders and could be used as weapons, though Alexei Stukov had doubts as to this.
After obtaining classified documents during a raid on Korhal, Raynor's Raiders were led to the Castanar facility. Here they found hybrids being created, with advanced weaponry being tested on them, as well as experiments on zerg. The facility was destroyed after a nearly invincible hybrid was released, and the facility's fusion core destroyed. Jim Raynor was left to wonder how many other similar labs the Dominion was operating.
In the last days of the Second Great War, Sarah Kerrigan brought the Swarm to Ketill at the request of Stukov, in order to destroy the base from which the program operated. Izsha believed that if the hybrids were used when the Swarm attacked Korhal, their attack would fail. The Swarm overran the Dominion forces stationed on the base's exterior and entered its depths, where they encountered Emil Narud, a scientist who had also created hybrids through his position in the Moebius Foundation. Hybrid dominators were released, but destroyed. The platform was laid waste and Narud seemingly killed.