According to DC canon, the Quality characters, before the 1985-1986 DC revamping event called "Crisis on Infinite Earths", existed on two separate realities in the DC Multiverse: Earth-Quality and Earth-X. While Earth-Quality followed much the same history as the main Earths, Earth-X was radically different from most Earths, in that World War II continued there until 1973, enabling the Freedom Fighters to continue their fight against the Nazis. "Crisis on Infinite Earths" #11 established a new "Post-Crisis" continuity in which the Quality and other DC characters have instead always lived on the single, unified DC Earth.