Earth-Two

Earth-Two is the official nomenclature used to describe a fictional reality featured in comic books published by DC Comics. Retroactively, the term has come to be analogous to nearly all comic book titles published by DC Comics during the Golden Age era of publication, which in DC terms applies to the years 1936 through 1956. The designation itself was not established until 1961 in a story called "The Flash of Two Worlds", which appeared in Flash, Volume 1 #123. In the story, the current superhero bearing the name Flash (Barry Allen) travels to an alternate reality where he meets his Golden Age predecessor, Jay Garrick, who was the star of his own series from 1940 to 1949.

The Earth-Two reality was the primary backdrop of three ongoing comic book titles. It was featured in the re-launch of All-Star Comics from [[1976 to 1978, which starred the Justice Society of America. It was featured in All-Star Squadron, which starred the eponymous World War II-era superhero team and published from 1981 to 1987. Lastly, it was the main setting to Infinity, Inc., Volume 1, which was published from 1984 to 1988.

The Earth-Two reality played a major role in the 1985-86 maxi-series Crisis on Infinite Earths. At the conclusion of the series, Earth-Two, as well as three other alternate Earths are merged into a brand new reality that has since become known as "New Earth". This repackaged continuity served as the primary reality of the DC Universe from 1986 up until the "Flashpoint" storyline in 2011.

It is important to note that not all stories published by DC Comics between 1936 and 1956 are necessarily considered canonical to Earth-Two continuity. For the purposes of this database however, we are considering all Golden Age DC Comics superhero titles as well as those canonically established as Earth-Two characters to be part of the same continuity.