In February 1971, an unofficial crossover took place between the DC and Marvel universes, wherein on Earth-One the Justice League encountered a fantastic foursome known as the Champions of Angor, while on Earth-712 that world's Squadron Supreme met four Avengers. While the former returned to their own reality in seclusion, the latter endured, facing various encursions on their Earth from that of the Avengers' world. Unlike the League, who was able to perpetuate a planet of peace and prosperity, the Squadron's world continually faced political turmult from powerful players. While the Squadron was mirror images with the League in form, they differed substantially in substance. Possessing more limited levels of abilities than their Earth-One counterparts, these protectors of this Earth-712 also failed to develope the true spirit of comradry that made the League true teammates. The League would devisely defeat these doppleganger do-gooders.
Now a Justice Society versus Squadron Supreme battle would definitely be interesting, considering that the originals are facing copies of their copies, grandfather versus grandson if you will. Two distinct generations that are worlds, and decades, apart. While the Squadron originally harkened to being carbon copies of the League, they graduated in their later years into more of the Society template. Consider....
- Doctor Spectrum, who abandoned his more Hal Jordan-ish uniform for that of the original Green Lantern, Alan Scott. Not only that, but both Doc and Alan were one-of-a-kind, not simply a member of same galactic corps.
- Tom Thumb and the Atom, neither able to shrink only diminutive in stature, and brainy with a brawn attitude mixed together.
- Whizzer and Flash, the unmasked fastest speedsters of their respective worlds, each family men from middle America.
- Power Princess and Wonder Woman, both of whom were heroines during World War II and spent decades faithfully beside the loves of their lives, military men that were very much mortal.
- Hyperion and Kal-L aka Superman were much more of the same power level than the more omnipotent Kal-El, each (for a time) sole survivors of their people.
- Golden Eagle/Cap'n Hawk/Blue Eagle and Hawkman, each of whom changed appearences nearly as much as the golden age Hawkman.
- Nighthawk chose a simply black chest emblem much like Batman, and both sought out political office after retiring their costumed alter egos, thinking this would provide them the fullest measure of exercising justice... which sadly it did not.
The Squadron and the Society, two of a kind, struggling to find their place in turbulent times on wonderous worlds in unique universes!