||Justice League of America [Flash [Barry Allen]; Green Arrow [Oliver Queen]; Green Lantern [Hal Jordan]; Superman [Clark Kent; Kal-El] (all Earth-1)]; Justice Society of America [Hawkman [Carter Hall]; Hourman [Rex Tyler]; Johnny Thunder; Thunderbolt; Mr. Terrific [Terry Sloane]; Robin [Dick Grayson]; Wildcat [Ted Grant]; Wonder Woman [Diana Prince Trevor] (all Earth-2)]; Black-Sphered Villains [How Chu; Gem Girl [Claire Morton]; Money Master [Horace Rowland]; Smashing Sportsman [Marty Baxter]] (villains)
||The JLA and JSA team up to stop the Black-Sphered Villains on Earth-2, using artificial means to power up four of their own with black matter, but it almost backfires when the four heroes become evil. The remaining heroes are then subconsciously helped by the four heroes into defeating them by exposing their weaknessses. These same weaknesses are then used vs. the four earlier-charged normal persons, who then lose their powers as well. Things are returned to normal on Earth-2, and the four Leaguers return to their world to stop the charged persons there using the same weaknesses.
||JLA-JSA team-up. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007). Story concluded from previous issue.
||in Justice League of America Archives, The (DC, 1992 series) #7 (February 2001); in Crisis on Multiple Earths (DC, 2002 series) #2