Slaying the Light's monstrous pet, Starman tracked the criminal to his lair. Interrupting his gloating broadcast of the Beaver's demise, Starman was immediately accosted by an army of Octopus League guards. As the hero struggled, the Light struck a vicious blow with the butt of his pistol, knocking Starman unconscious. When the hero awoke, he found himself staring into the point of his own gravity rod, now wielded by his adversary. Planning to slay the hero with his own weapon, the Light was thwarted by his ignorance of the device and the press of a wrong button slammed the would-be conqueror to the floor. Quickly freeing himself, Starman regained his weapon and rendered the Light unconscious. To defeat the remaining army of the League of the Octopus, Starman freed the sailors from their cells and in short order, the submarine was under Starman's control. The Light was turned over to the federal authorities and the ship itself sent to the research division of the U.S. Navy (Adventure Comics #65).

    The Light eventually escaped prison and organized a new gang. Rather than reveal his true name, he operated as the Unknown and targeted the work of Professor Juniper Grimm, a specialist in time research. Grimm had invented a spherical  time machine which could travel thousands of years into the future.  After knocking the hapless scientist unconscious, the Unknown and one of his assistant boarded the craft and traveled to 2000 years into the future. After recovering plans for a large electro-cannon, the Unknown waged war on America's petroleum industry. A single shot from this cannon unloosed a cloud of powerful thunderbolts that ignited over it's target. After the destruction of several facilities, Woodley Allen contacted Starman.

    Starman encountered the results of the electro-cannon at  a production plant of the National Oil Refinery corporation.  When the thunderbolts formed out of a cloudless sky, Starman suspected human guidance and followed the electrical trail back to the laboratory of Juniper Grimm. Once there, Starman was quickly assaulted by the agents of the Unknown while the villain himself escaped into the time machine. Starman made short work of the poorly trained criminals, who explained the Unknown's plans. After turning the petty thugs over to the local police, Starman waited out the Unknown in Grimm's laboratory.

    When the machine returned, it was not the Unknown who emerged by giant men clothed in an indestructible fabric. Unable to deal with these "Futurites", Starman was overcome and thrown into a basement cell with Professor Grimm. As the Futurites waged war across the city, the Unknown returned to kill Starman after the sun had risen and the gravity rod lost it's power. Starman bided his time and goaded the Unknown into revealing his true identity: The Light. As the Light gloated, Starman watched the skies as the moon moved over the sun, providing a temporary eclipse and recharging the gravity rod. No match for the well-armed hero, the Light was knocked unconscious and bound for the authorities. Meanwhile, Starman tracked the Futurites who had handily bested both the police and the military. By a stroke of luck, Starman unhooded one of the future men, who immediately fell to the ground, gasping for breath. The air of the future had become so rarefied that modern pollutants were poisonous to the Futurites, who beat a hasty retreat into Grimm's time machine and the future (Adventure Comics #71).

Note:  Another criminal scientist, Alexei Luthor, also once used the Light as a nom du crime (Superman #13) in roughly the same time period as the appearance of the Starman adversary.  Whether the two criminal scientists were aware of each other or had some relationship beyond the shared name is unclear.