Challengers of the Unknown #6
In "Captives of the Space Circus," the Challengers of the Unknown answer a distress call only to be ensnared by a sinister rocket ship circus floating through space. Trapped among alien performers and forced to battle the monstrous Quadro, the team must rely on quick thinking and a surprising twist in the environment to turn the tide. Written by Dave Wood and Jack Kirby, with art by Jack Kirby and inks by Wally Wood, this 1959 DC adventure features cover art by Jack Kirby, who also pencils and inks the interior.
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The Challengers answer a shipwreck distress call, but find it's a trap. They're pulled through space on a light beam and made captives of a rocket ship space circus. The heroes are prodded through cages and catapulted into a tank to fight Quadro, the Four-Finned Demons. Other alien performers are also captives. As the Challengers prepare for a last stand, Prof learns the atmosphere gives them super-strength. They bombard the circus guards with boulders and disable the ships. The aliens are surprised to learn the circus owners are criminals and promise to send all the captives home.
Plot details indexed by the Grand Comics Database (CC BY-SA).