Ronan was born on the planet Hala, the capital of the Kree Empire in the Greater Magellanic Cloud. Ronan is a member of the alien Kree race and a member of the Accuser Corps, who are the Kree equivalent of military governors and jurists. His rise through the ranks was extraordinary, and he eventually became the third-most powerful being in the Kree Empire. The Supreme Intelligence appointed him "Supreme Accuser of the Kree Empire", and in this role he is known simply as "Ronan the Accuser".