Annihilus persuaded the inhabitants of the Negative Zone that they were on the verge of being erased from existence by the ever expanding positive universe, which was crossing into their realm. They reluctantly joined Annihilus in a quest for survival. He gathered one hundred super powered beings known as the Centurions, as his elite cosmic strike force.
 
After Annihilus defeat, Ravenous was given control of much of the Skrull and Kree empires. He gave planets to members of the Centurions. Without the Nova Corps to stop them, Firelord took it upon himself to kill the members of the Centurions for their war crimes. 
 
Firelord did show mercy on some members, who swore they were misled. They were left to make up for the wrongs that they had done during the war.