Justice League of America, Vol. 1

Sighting what appears to be Hawkman's Thanagarian cruiser orbiting Mars, Green Lantern summons the rest of the League who fly out to investigate. As the approach, though, the craft fires on them and their every attack is repelled until they fall to the planet's surface and - remarkably - all attain the same height and weight.The Thanagarian craft leaves Mars behind, its pilot - Katar Hol - remembering what drove him to attack his friends. Having returned to Thanagar some time before, he found its people subject to a disease that equalized them and before he could prevent it, was infected himself. By attacking the League, he was able to absorb some of their powers - though they in turn were equalized - before heading off to find the Equalizer himself, the alien who had infected Thanagar.The Leaguers band together and using their combined willpower, use Green Lantern's ring to follow Hawkman's craft. Hawkman alone is unable to overcome the Equalizer but with the help of the Leaguers, the Equalizer is driven away.Back at the satellite, Hawkman is granted membership in the League once more and swears to cure Thanagar.