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"Challengers of the Unknown" #39 features Rocky, the genius challenger, in a gripping battle of wits against an electronic brain designed for world domination. The storyline highlights the intense struggle as Rocky uses his incredible intellect to decode the formula for the ultimate weapon. This issue also includes the Challenger Kids in "Phantom of the Fair!"
Keywords: Challengers of the Unknown DC Comics 1964 comic book vintage comics superhero sci-fi graphic novel collectible adventure