Along with the Ur-Quan they were mentally enslaved by the Dnyarri and assisted in the genocides against other members of the Sentient Milieu.1 After the Dnyarri slave revolt and the first doctrinal enforcements against the Faz and Yuptar, the Kohr-Ah came to the homeworld of the Mael-Num, the last free race the Ur-Quan were aware of, with the intent of destroying it. The Mael-Num asked the Kohr-Ah why they had come to destroy them, and so sincere was the question that the Kohr-Ah were given pause. In that hesitation, the Kzer-Za arrived with the intent to enslave the Mael-Num. The two Ur-Quan sub-races fought, and thus began the first Doctrinal War. During the long battle, the Mael-Num escaped in a large interstellar fleet to places unknown. It is reasonable to assume that, were either species of Ur-Quan to discover the Mael-Num again, they would make great efforts to correct their millennia-old oversight. After the Mael-Num got away the Kzer-Za discovered the Xen-Weyi and enslaved them instead.
Based on the fact that the Kohr-Ah refer to the Mael-Num as "one-eyed creatures", and the similarity of their names, it has been theorized that the Mael-Num are the ancestors of the Melnorme. A reliable source has confirmed this speculation.