Contents 1 Appearing in "The Mystery of Spaceman X!" 2 Synopsis for "The Mystery of Spaceman X!" 3 Notes 4 Trivia 5 See Also 6 Recommended Reading 7 Links and References

Appearing in "The Mystery of Spaceman X!"

Featured Characters:

• Justice League of America
  •  Aquaman 
  •  Atom 
  •  Batman 
  •  Flash 
  •  Green Arrow 
  •  Green Lantern 
  •  Martian Manhunter 
  •  Superman 
  •  Wonder Woman 

Supporting Characters:

• Snapper Carr

Villains:

• Spaceman X

Other Characters:

• 
  

Locations:

• 
  

Items:

• 
  

Vehicles:

• 
  
  
  

Synopsis for "The Mystery of Spaceman X!"

When a giant alien called Spaceman X arrives on Earth and begins to terrorize the planet, the Justice League comes to the rescue.

Realizing that Spaceman X is really a robot, Batman, Superman and the Atom travel into space to find the source of its power, while the other members of the League try to contain the robots rampage across the planet. When the heroes in space track down the controller of Spaceman X, Superman is able to defeat him with his super strength, rendering the Spaceman X inert, ending it's threat.

Notes

• This issue is reprinted in Justice League of America Archives Volume 3.

Trivia

• No trivia.

See Also

• Write your own review of this comic!
• Discuss Justice League of America Vol 1 20 on the forums
• Cover gallery for the Justice League of America series

Recommended Reading

• None.

Links and References

• No external links.

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