The Sovereign are a highly advanced, genetically engineered galactic race who live on the collective of planets of the same name. The Sovereign had their homeworld attacked by an Abilisk that was wreaking havoc on the world and trying to eat the planet's power source.

Believing it to be beneath them to fight it themselves, their leader Ayesha hired the Guardians of the Galaxy to kill the beast in exchange for Nebula, who was captured by the Sovereign for attempting to steal Anulax Batteries.