Appearing in "The Menace of the "Atom" Bomb!"
Featured Characters:
- Justice League of America
Aquaman 
- Atom (Joins Team)
- Batman
- Flash
- Green Arrow
- Green Lantern
- Martian Manhunter
- Superman
- Wonder Woman
Supporting Characters:
Adversaries:
- Mister Memory
- Hector Hammond
- Pied Piper
- Sea Thief
- Angle Man
- Dr. Davis
Other Characters:
Locations:
Items:
Vehicles:
Synopsis for "The Menace of the "Atom" Bomb!"
- Synopsis not yet written
Notes
- This issue is reprinted in Justice League of America Archives Volume 2.