Sidereus

Sidereus is a high ranking servant of Lord Votan. He is responsible for the Cauldron of Conversion, a vat containing a living virus to kill all those in the universe who are not of the Axi-Tun race. 
 
Sidereus was involved in the deaths of the ambassadors of the Charter, a peace organization. This was covered up and blamed on Quasar. When Quasar and the newly formed Star Masters investigated, Sidereus and his underlings captured them. Sidereus ordered them to be thrown into the Cauldron. 
 
When it was learned that his quarry had escaped, Sidereus was ordered by Votan to ‘purify’ himself, which meant suicide. Sidereus and the others who failed faked this suicide. His current whereabouts are unknown.