The two Oni known as Moloch and Drahmin roamed the 5th plane of the Netherrealm in search of damned souls to torment. After many centuries, the two demons came upon a battling Scorpion and Quan Chi. Quan Chi, sorely pressed by Scorpion, pleaded for aid from the Oni. Drahmin and Moloch intervened and drove off Scorpion. Demanding payment for their services, Quan Chi agreed to liberate them from Netherrealm. The Oni agreed and led the sorcerer to an ancient structure rumored to be a gateway to other realms.