| Earth-One | |
|---|---|
| First appearance | The Flash #123 (September 1961) Pre-Crisis version: Detective Comics #225[1] (November 1955, retroactive) Post-Crisis version: 52 #52 (July 2007) |
| Created by | Gardner Fox |
| Race(s) | Humans, Amazons, Kryptonians, Atlanteans |
| Characters | Silver Age Justice League of America |
| Publisher | DC Comics |
Earth-One (also Earth-1) is a name given to two fictional universes (the Pre-Crisis and Post-Crisis versions of the same universe) that have appeared in American comic book stories published by DC Comics. The first Earth-One was given its name in Justice League of America #21 (August 1963), after The Flash #123 (September 1961) explained how Golden Age (Earth-Two) versions of characters such as the Flash (Jay Garrick) could appear in stories with their Silver Age counterparts (Barry Allen). This Earth-One continuity included the DC Silver Age heroes, including the Justice League of America.
Earth-One, along with the four other surviving Earths (Earth-Two, Earth-Four, Earth-S, and Earth-X) of the DC Multiverse, are merged into one in the 1985 miniseries Crisis on Infinite Earths. This Earth's versions of characters were primarily the Earth-One versions (i.e. Superman, Batman), but some characters from the four other worlds were also "folded" in. In Infinite Crisis, Earth-One was resurrected and merged with the primary Earth of the publication era to create a New Earth that brought back more aspects of Earth-One's original history. In 2007, a new version of Earth-One was created in the aftermath of events that occurred within the 52 series.[2]