The Comet's Altroxian helmet allows him to fly at Incredible speeds, or roughly 300 mph.
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The Mighty Crusaders
In the early 1940s, while working at his research lab in Manhattan, John Dickering discovered a gas that is "fifty times lighter than hydrogen." Injecting it into his bloodstream, he found that he could "make great leaps" through the air. Jekyll-like, he continued experimenting on himself until, after many injections, the gas accumulated in his eyes and caused them to throw off two powerful beams. When they crossed, whatever he was looking at would "disintegrate completely."
Dubbing his power "dissolvo-vision," he found that the only problem was that he could not control it except by closing his eyes. Fortunately, Dickering's vision could not harm glass, so he made a pair of goggles which he raised to release his blasts.
Inspired by the exploits of other costumed heroes, he became a crime-fighter, albeit an unorthodox one: he was one of the few who killed his adversaries. Though girlfriend-reporter Thelma Gordon wrote him up as a hero, his thirst for blood made the public uneasy.
Not so the aliens of the planet Altrox who, after studying his exploits on earth, teleported him to their world to help Queen Naija wage war against invading robots. Barely surviving that encounter, the Comet was returned to earth -- where he was promptly shot dead by friends of gangster Big Boy Malone, whose gang he had previously busted.
Witnessing the tragedy, Queen Naija brought him back to Altrox, reviving and then marrying him. But bad luck continued to hound Dickering: less than a week later, robot survivors of the Battle of Annexia ambushed the newlyweds. By this time, the Altroxian atmosphere had deprived him of his dissolvo-vision -- something the Comet did not learn until he tried to use it against the assassins. The queen was killed, "her skull . . . crushed like a rotten bloodfruit."
Creating a super-powered costume using Altroxian science, Dickering returned to earth, after spending the equivalent of several earth-decades on Altrox, only to discover that Thelma had married his brother Bob, The Hangman. Recovering, the Comet moved in with The Shield (1), and resumed his superheroic career.