time, his "good self" resurfaces. Doctor Polaris apparently returns to battle Green Lantern and the Justice League alongside Killer Moth, Dagon, the Mask and the Pied Piper, but it is later revealed the Demons Three, Abnegazar, Rath and Ghast, had created magical duplicates of the villains. The League even has to battle the villains' costumes before ultimately defeating the Demons Three. Doctor Polaris was later released from imprisonment during one of his "good" periods. He attempted to discover the source of Green Lantern's power by kidnapping his friend, Tom Kalmaku. Polaris learned Green Lantern's power battery was hidden at Ferris Aircraft and was able to put a magnetic barrier around it, which prevented Green Lantern from fully charging his ring. The hero tracked Kalmaku to Polaris' lair as his power ring ran out of energy. Polaris turned his weapon on the Green Lantern, apparently killing him. The emerald gladiator's body disappeared. What Doctor Polaris did not know was that Green Lantern was taken to Oa, home of the Guardians of the Universe, the masters of the Green Lantern Corps. Due to the magnetic effect of Polaris' weapon, they believed Jordan was dead. To complicate matters further, Jordan was taken into the 58th Century where he battled a threat to the Earth in the fictional identity of Pol Manning. Returning to the 20th Century, Green Lantern defeated Polaris. After reviving him, Jordan revealed to Kalmaku the "good" nature of Neal Emerson had lessened the effect of Doctor Polaris' weapon, thereby saving the ring wielder. A reformed Emerson traveled to the Earth's magnetic North Pole to study it. Emerson was at the point where the lines of magnetic force converge when an earthquake plunged him into a deep crevice. At the bottom of the crevice lay a glowing blue blob. The radiation from the blob altered Emerson's perceptions, allowing him to understand the blob's intentions to dehydrate the entire Earth. Emerson was able to subconsciously influence Hal Jordan into becoming Green Lantern, but was unable to bring the Lantern to the North Pole. In desperation, Emerson created a mental duplicate of his evil alter ego. Doctor Polaris took advantage of the situation and attacked Green Lantern by blocking his power battery with a magnetic barrier. Doctor Polaris flew into Earth's orbit to increase the solar radiation reaching the planet. As he left the Earth's magnetic field, the barrier around the power ring