Metisette

Metisette is a moon orbitting the gas giant Hesiod in the 23 Librae system. It has a mostly Nitrogen atmosphere, but Methane is present as a liquid, forming the rivers and lakes of the moon. The Kig-yar Reth used Metisette as a breeding grounds for hundreds of thousands of Unggoy, which would be used to seize the The Rubble, and, ultimately, to destroy Earth.