Spartak was the homeworld of the Acroyears, an inhospitable, rocky planet situated within the Microverse. It was ruled by Prince Acroyear until he was deposed by his evil brother Prince Shaitan, a servant of Baron Karza. Acroyear later regained control of the planet, but was eventually forced to weild the Worldmind, the semi-sentient soul of the planet, as a weapon with which to destroy Baron Karza, effectively 'killing' it and causing Spartak to be destroyed (the Worldmind was apparently complicit in this act). The surviving Acroyears became a race of galactic nomads.