Foreign powers jealous of America's predominance in the area of metahuman protectors have long sought to create their own homegrown supermen. On Earth-One, it was Chinese spy master Wo Fong who orchestrated the creation of his Sino-Supermen. Originally soldiers granted the abilities similar to Superman, Flash, Green Lantern and Batman... such abilities came at a cost as after using them for a short period they would cause these agents to self-destruct. When Batgirl faced just such a faux-Superman and a male and female Flash, she was able to locate Wo Fong himselt, the man who caused her brother's death.
Decades prior the Sino-Supermen's appearence, in Germany there appeared the Supernazi and his allies. Originally Captain Marvel, Mary Marvel and Captain Marvel Junior from the parallel world of Earth-S, the trio were drawn to Earth-Two by Hitler's scientists and cloned from their original personas of Billy and Mary Batson and Freddy Freeman. Obeying Hitler's commands to attack England and the Justice Society sent to stop them, the Marvel Family reigned terror across Europe while their normal alter egos were held prisoner in Berlin. That is, until Batman and his allied freed the teens and restored sanity to the Marvels.
While the technology undoubtedly still exists in China and Germany, Wo Fong and Hitler are long gone as are their mindless soldiers and shortterm super-henchmen.