"Showdown!": Brainiac and his hordes attack the Earth, and Superman calls upon the Justice League and the New Teen Titans to help him repel them.
- The sneaky, sniveling, conniving witch! Sh-She got my scoop! I--I set it all up! I did it! I did everything-- --Now she'll get all the credit! That miserable witch!
- -- Lois Lane
Appearing in "Showdown!"
- Jimmy Olsen
- Morgan Edge
- Lana Lang (On a TV or computer screen)
- Lane Family
- Brainiac's Soldiers (Final appearance)
- Vandal Savage (Mentioned only)
- Cheshire Cat (Mentioned only)
- Bozo the Clown (Mentioned only)
- Justice League of America
- New Teen Titans
- Citadel (Mentioned only)
- Ali Kyamm (On a TV or computer screen)
- Ben-David (On a TV or computer screen)
- Rao (Mentioned only)
- Vegan System (Mentioned only)
- The Sun (Flashback and main story) (from Action Comics #545)
- Justice League Satellite I
- North Pole
- United States of America
- Middle East
- A Middle Eastern Nation (Unnamed) (On a TV or computer screen)
- Green Lantern Ring
- Lasso of Truth
- Thanagarian Mace
- Justice League Teleporter (Behind the scenes)
- Red-Solar Radiation Rifles
- Star Wars Rejects (Mentioned only)
- Fortress of Solitude Key
- Red Sun Torpedo (Mentioned only)
Synopsis for "Showdown!"
Brainiac and his hordes attack the Earth, and Superman calls upon the Justice League and the New Teen Titans to help him repel them.
- This book was first published on May 26, 1983.
- The Lois Lane segment in this issue continues from Superman #386.
- This is the final appearance of the Earth-One Sam Lane. The revised Post-Crisis Sam Lane makes his first appearance in Adventures of Superman #424.
- No trivia.
- Write your own review of this comic!
- Discuss Action Comics Vol 1 546 on the forums
- Cover gallery for the Action Comics series
- Superman Recommended Reading
- Action Comics (Volume 1)
- Action Comics (Volume 2)
- Adventures of Superman (Volume 1)
- Batman/Superman (Volume 1)
- Batman/Superman (Volume 2)
- DC Comics Presents (Volume 1)
- Superman (Volume 1)
- Superman (Volume 2)
- Superman (Volume 3)
- Superman (Volume 4)
- Superman (Volume 5)
- Superman/Batman (Volume 1)
- Superman Confidential (Volume 1)
- Superman: The Man of Steel (Volume 1)
- Superman: The Man of Tomorrow (Volume 1)
- Superman/Wonder Woman (Volume 1)
- World's Finest (Volume 1)