The Space Emperor — Edmond Hamilton

Captain Future… the Ace of Space! Born and raised on the moon, Curt Newton survived the murder of his scientist parents to become the protector of the galaxy known as Captain Future. With his Futuremen, Grag the giant robot, Otho, the shape-shifting android and Simon Wright, the Living Brain, he patrols the solar system in the fastest space ship ever constructed, the Comet, pursuing human monsters and alien threats to Earth and her neighbor planets. Follow the quest of Curtis Newton, wizardman of science, as he scours the worlds of tomorrow in the hunt for the greatest interplanetary outlaw of all time! A creeping menace invades the galaxy in a sweep of interplanetary conquest -- and Captain Future meets his most powerful enemy... the Space Emperor!