"Earth's First And Last Super-Hero": In the middle of a Justice League meeting, before the unbelieving eyes of Wonder Woman, Red Tornado, and Black Canary, five of their fellow members inexplicably vanish. Superman, Batman, Flash, Green Lantern, and Green Arrow reappear on Earth-Prime, where
Synopsis for "Earth's First And Last Super-Hero"
In the middle of a Justice League meeting, before the unbelieving eyes of Wonder Woman, Red Tornado, and Black Canary, five of their fellow members inexplicably vanish. Superman, Batman, Flash, Green Lantern, and Green Arrow reappear on Earth-Prime, where super-heroes exist only in comic-books, and they are unable to return to Earth-One.
DC Comics Julius Schwartz explains that certain individuals on Earth-Prime (such as some DC writers) have the ability to affect reality on Earth-One , and that his recent reader survey to determine the JLA's most popular members may have resulted in those five heroes being transported between Earths.
Meanwhile, Ultraa, an alien youth rocketed to Earth-Prime after the death of his race and raised by Australian aborigines, has emerged as Earth-Prime's first super-hero, and his presence is the force preventing the JLA heroes from returning home.
Maxitron, the controlling computer of his ship, has gone insane, and merges with a human scientist to become the first super-villain, Ultraa's counter-part. A misunderstanding results in a battle among Ultraa, Superman, and Green Lantern, but finally the three team up to defeat Maxitron, with Superman and Ultraa ex-changing identities to prevent the villain from exploiting their respective weaknesses to red solar energy and ultra-sonic sound.
Realizing that Earth-Prime is not yet ready to have super-beings in its midst, Ultraa returns to Earth-One with the JLA members.
Appearing in "Earth's First And Last Super-Hero"
- Justice League of America
- Anderson Carey/Maxitron (Only appearance; dies)
- Bank robbers
- United States Air Force (Earth-Prime)
- Amos Fortune (Mentioned only)
- Privateer (Mentioned only)
- Doctor Light (Mentioned only)
- Hippolyta (Mentioned only)
- Iris Allen (Mentioned only)
- Justice Society of America (Mentioned only)
- Earth-Two (Mentioned only)
- Green Lantern Ring
- Trick Arrows
- Justice League Signal Device
- Cosmic Treadmill
- Magic Sphere (Mentioned only)
- Green Lantern theorizes that the existence of super-beings on one reality attracts the cascading subsequent appearances of more super-beings by some sort of metaphysical force. To back this up, he mentions how the appearance of Superman on Earth-One presaged the emergence of all other superheroes. However, this is inaccurate, as all the heroes native to Earth-Two and Earth-S first appeared decades prior to Superman/Superboy on Earth-One. Green Lantern's argument would have made more sense had he used the appearance of Superman on Earth-Two as his example.
- It is mentioned that Maxitron is structured "like a human brain" due to its division into millions of individual cells. The pyramid-shape of these cells is a subtle reference to the morphological category of pyramidal cells in the cerebral cortex.