Clandestine Mercenaries working for or with Samir Duran were observed by Zeratul's warband on an unidentified dark moon. The mercenaries conducted an experiment using ursadons, in which broodlings were being raised. Slaying all the ursadons resulted in a broodling emerging from within one of them. The dark moon installation was wiped out by Zeratul's warband. However, hybrid research would continue with other terran bodies.