Earth-21 is one of the many universes in the multiverse.


Earth-21 was depicted on a map shown to Barry Allen of Earth-1 by Jay Garrick of Earth-3.[1]


The Flash

Season 6

Behind the scenes

  • In the DC comics, Earth-21 is a universe in which the Cold War ended peacefully in the 1960s.


Community content is available under CC-BY-SA unless otherwise noted.