Brainiac adopted Vril Dox so as to improve his popular appeal amongst the people of Colu. Studying his father's technology, Vril developed a machine to increase his intelligence and soon was nearly as intelligent as Brainiac himself. However, Brainiac never much cared for the boy and at a young age, gave him to the Dominators in order to cement an alliance between the two races.

Eventually, Vril rebelled against the Dominators and fought against them during their invasion of Earth. Vril then moved on to found L.E.G.I.O.N., an intergalactic police force. Using is vast intelligence, Vril became a cold, calculating leader, turning L.E.G.I.O.N. into a force to be reckoned with. To this day, he continues to lead this organization and routinely has run ins with DC's space faring heroes.