Without a doubt the dual dopplegangers who were the most in sync were the Green Lanterns, which is logical since up to this point the two of them worked together on four occasions as well as a couple missions together alongside the League and Society. Given their similar abilities derived from their power rings as well as fearless dispositions and creative skills, this pair of Emerald Crusaders were able to solve various problems side-by-side. Consider they vanquished Krona, Prince Peril, Sinestro, Captain Challenge and Aquarius... some of these world-class threats to humanity. And on this occasion, it was Solomon Grundy's turn to feel the wraith of Earth-One's Hal Jordan and Earth-Two's Alan Scott, who combined not only defeated Solomon Grundy but kept him prisoner of Suicide Swamp from whence he came. Take that Scarlet Speedsters (on this case, Barry "Flash" Allen was subdued by Teppy the space-pooch and hence unable to aid his twin Jay "Flash" Garrick... which had he been able to may have well aided Jay in outshining the Lanterns on this occasion).
Superman and Medusa
9 hours ago