Freedom Fighters on Earth-X: The X-Factors

Of all world's in the original Multiverse, only two had no resident superheroes, at least initially... Earth-Prime and Earth-X. The former eventually had two, known as Ultraa and Superboy. And the latter had their own superhumans, although these would only appear following the migration of a legion of champions from another universe, and then with mixed results.

The history of Earth-X was left undocumented save for the exploits of those Quality heroes who arrived from Earth-Two in 1942. In the reconstituted Earth-10 following the Infinite Crisis, a world was formed modeled after Earth-X, with a version of Axis Amerika there known there as JLAxis. This team had a variation of Batman known as Der Grösshorn Eule or Leatherwing. Apparently, there was also a variation on the Flash and Green Lantern heretofore unseen as well as a pair of Winged Warriors. Also, a Valkyrie named Brunhilde was among the JLAxis, corresponding to Gudra of Earth-Two who had joined Axis Amerika, and who filled the role of a Wonder Woman there.

On the reconstituted Earth-10, there was a Superman named Ubermensch, although in the original Earth-X history there was instead a de-powered Clark Kent who disguised himself a a variation of the Joker, leading the LUTHAR League which battled Jimmy Olsen of Earth-One, who while on Earth-X was temporarily the superhero known as Steelman. In place of a Superman in the original Earth-X history, there was Lance and Michael Gallant who, like Billy Batson and Freedy Freeman aka Captain Marvel and Captain Marvel Junior of Earth-S, became Captain Triumph. While not officially joining the Freedom Fighters, Triumph was his world's most powerful... and only native... superhero.

Of course, the preeminent team of superheroes on Earth-X was the Freedom Fighters. Recruited and led by Uncle Sam, who along with his compatriots arrived from their native Earth-Two to assist the then-hero-less world against the hordes of the Axis Powers. As he brought most of these former All-Stars from Earth-Two during a Crisis event in 1942, something similar happened on Earth-X as happened when the citizens of Earth-B migrated to Earth-One during the Crisis... the Fighters seemingly merged with their Earth-X counterparts! And so, such heroes as Doll Man and Phantom Lady merged with the Darrel Dane and Sandra Knight of Earth-X, which enabled them to renew acquaintances with counterparts of Darrell's girlfriend Martha and Sandra's father Henry, among others. Meanwhile, the original friends and family members they left behind on Earth-Two undoubtedly had significant holes to fill with the departure of their loved ones. Such was an eventuality during times of war and conflict.