The JL-Axis is an alternate version of the Justice League of America from New Earth. On their Earth, Earth-10, Germany won World War II, and soon after the Nazi party took over the entire world with Adolf Hitler still alive as acting fürher. The JL-Axis acts as superpowered agents of the party. One of the traits of this Earth's society is that people are separated by their genes. Those with the strongest are taking away to breeding centers where they are forced to mate, while those with the weakest genes are killed in mass genocides. The teams first full appearance was in Countdown to Adventure #2. When Monarch began to seek out superpowered beings on each earth to create an army to battle the Monitors, he had Viza Aziv, Forerunner, a native to Earth-48, travel to alternate Earths to scout potential members. Given that her own humanoid species was wiped out in an analogous act of genocide when it waged war against the other nine inhabited planet of her Earth's solar system, Forerunner is disgusted with the underlying philosophy of this world. She attacks members of a Nazi contingent engaging in ethnic cleansing (or genetic cleansing) in Kansas, and attracts the attention of the JL-Axis. She manages to defeat the entire team, and Monarch arrives to offer them a position in his army.