Troobian Empire

The Troobian Empire is a galactic empire and warlike army in the service of Emperor Gruumm. Gruumm's forces travel in the Terror Spacecraft that they use to travel throughout outer space in its journey to conquer and destroy planets. Inside, everything is green, dank, and skeletal.

Omni
Omni is secretly the power behind the throne and de facto leader of the Troobians. Also known as the Magnificence.

Emperor Gruumm
Emperor Gruumm is a figurehead who serves as the de jure leader of the Troobians, but he is a servant of an even greater menace, Omni.