We would not have taken your world's satellite if it were not a matter of life or death ...for your moon is rich with the elements we of Klatto need to survive! 
- — Gnrelel
Action Comics #580 is an issue of the series Action Comics (Volume 1) with a cover date of June, 1986.
Synopsis for "The Day Superman Couldn't Save!"
Superman recalls the time he had to let six bus passengers die to save hundreds more threatened by a broken bridge, and how it traumatized him until he learned he had made the correct decision.
Appearing in "The Day Superman Couldn't Save!"
Featured Characters:
Supporting Characters:
Antagonists:
Other Characters:
- Citizens of Metropolis (Unnamed)
- Family of Six (Unnamed) (Also in a vision) (Single appearance; dies)
- Cousin Eddie (Mentioned only)
- Amusement Park Guests (Unnamed)
Locations:
- North Pole
- Metropolis
- Metropolis River (Unnamed)
- Galaxy Communications Building
- Clark Kent's Office
- Suspension Bridge (Unnamed) (In ruins)
- 344 Clinton Street
- Clark Kent's Apartment
- Metropolis Amusement Park (In ruins)
Items:
- Fortress of Solitude Key
- Giant Superman Diary
- Daily Planet Newspaper
Vehicles:
- Bus
Synopsis for "The Most Dangerous Toy on Earth!"
An alien comes to Earth in search of an artifact a boy named Christopher Ball now possesses. But even Superman cannot convince him to give it up.
Appearing in "The Most Dangerous Toy on Earth!"
Featured Characters:
Supporting Characters:
Antagonists:
Other Characters:
- Christopher Ball (Single appearance)
- Khald (Single appearance)
- Lex Luthor (Mentioned only)
- Mr. Mxyzptlk (Mentioned only)
- Phantom Zoners (Mentioned only)
- Green Lantern (Mentioned only)
- Batman (Mentioned only)
Locations:
- Space
- Otaw (planet) (Mentioned only)
- Earth's Moon
- Earth
- Illinois
- Chicago
- Illinois River
- Mississippi River
- Metropolis
- Galaxy Communications Building
- GBS World News (Mentioned only)
- Galaxy Communications Building
- Pacific Ocean
- Indonesia
- Borneo
- Illinois
Items:
- Strebgl't
Vehicles:
- Khald's Spacecraft
Synopsis for "The Mystery of the Missing Moon!"
Superman tries to find out who stole Earth's moon and substituted a counterfeit.
Appearing in "The Mystery of the Missing Moon!"
Featured Characters:
Supporting Characters:
Antagonists:
- Klattoian Underground Dwellers (Unnamed) (Single appearance)
Other Characters:
- Steven (Single appearance)
- Klattoians (Unnamed) (Single appearance)
- Gnrelel (leader) (Single appearance)
Locations:
- Space
- Klatto (planet) (Single appearance)
- Earth's Moon
- Apollo Missions (Mentioned only)
- Lady of the Moon (Mentioned only)
- Earth
- Metropolis
- 344 Clinton Street
- Rooftop
- 344 Clinton Street
- Metropolis
Items:
- Imitation Moon
- Lunar Signpost (Mentioned only)
Vehicles:
- Klattoian Spacecrafts
Concept:
- Interlac
- Space Warp
Notes
- This issue is set in the short period where the Superman of Earth-One (and all his supporting characters and villains) existed on the post-Crisis New Earth. This period ended when the effects of the Crisis "caught up" with Superman (et al) in The Man of Steel #1
- The Day Superman Couldn't Save! is told in flashback.
- An "Editor's Note" at the end of the second story indicates: As the grand prize winner in the Super Powers sweepstakes, Christopher Ball was entitled to appear in a story with Superman!"
See Also