Wa'Rak was a Furinax researcher at the Protoss Advance/Experimental Facility. As part of PAX's research, a sample of creep was brought to the facility by the zealots Akam, Golarath and Ruom, who were also assigned to guard the facility in the event of an accident. As it was, an accident did occur, Golarath and Ruom went to extract a tissue sample. As it grew, Golarath began disfiguring himself, eventually falling to his own psi-blades, while Ruom fell into catatonia, his mind unreadable. As such, he was promptly put in an isolation unit.