It is inhabited by a Captain Thunder whose real identity was Billy Batson and variants of some Earth-One and Earth-Two characters.
Other defining characteristics are:
- Superboy was raised in Metropolis
- Wonder Woman fought in WWII and had adventures similar to her Earth-Two counterpart.
- Bruce Wayne retired by the mid 1960's to make way for a new Batman and Robin team.
Crisis on Infinite Earths: The Compendium stated that the following stories/comics were appearances of Earth-Forty:
- Adventure Comics #120
- Batman #32, 131, 135, 145, 159, 163
- Batman: The Dailies 1–3
- Batman: The Sunday Classics
- The Legend of Wonder Woman 1–4
- Thrill Comics #1 (ashcan)
- Superman #46
- Wonder Woman #50, 156, 159–165, 168
- Crisis on Infinite Earths: The Compendium lists entire issues rather than specific stories, leaving the question if any non contradictory stories in those issues occurred on Earth-One, Earth-Forty, or both.
- The Compendium lists Thrill Comics #1 (1940) as happening on Earth-Forty but doesn't count it as a first appearance (possibly because it was an ashcan comic)
- The Compendium also doesn't count the 1943 Batman newspaper strip as a first appearance of Earth-Forty either (possibly because it wasn't an actual comic book).
- The Crisis on Infinite Earths: The Compendium stated this was "revealed as a distinct parallel Earth in The Kingdom #2" making this reality part of hypertime.
- Queen Hippolyta is depicted as a blonde in The Legend of Wonder Woman (Volume 1) rather than having brown hair as on Earth-Two.
- The Essential Wonder Woman Encyclopedia (2010) doesn't list Earth-Forty and assigns the "Golden Age" Wonder Woman stories to Earth-One resulting in those stories happening with variation on all three Earths.
- If one counts Thrill Comics #1 (1940) as Earth-Forty's true first appearance and Convergence #0's implication that Earth-Two didn't appear until The Flash #123 then it is one of the three oldest alternate realities officially identified (the other two are Earth-Two-A and Earth-Quality). In any case Earth-Forty is the oldest official hypertime reality.
- Characters from Earth-Forty
- Other things related to Earth-Forty
- Earth-Forty's Comic Appearances
- Reality Gallery: Earth-Forty
Links and References