The Ethereum were the ruling class of ethereal on their homeworld of K'aresh. The Ethereum vowed vengeance upon Dimensius for decimating their world and have been tracking Dimensius ever since... According to Commander Ameer of the Protectorate," the Ethereum have grown dark... twisted." Vengeance has become their only recourse and any that would stand in their way or not join their cause are considered enemies. Many saw that the Ethereum were plummeting into madness and left. Several of the Nexus-Princes of the Ethereum council abandoned the Ethereum to form other groups and factions with different goals.