Dates
- Cover date
- February-March 1959
- On sale
- December 16, 1958
- Pages
- 36
Editions and covers
- Original editionSource ↗
Creators
Stories
- Captives of the Space Circus · 14.67 pages
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.
- Battle under the Sea · 1 pages
- The Sorceress of Forbidden Valley · 9.67 pages
June Robbins crash-lands on an uncharted island and finds an Aladdin's lamp in a cave. Lighting it creates fumes that overpower her. The Challengers track June down, discovering a hidden valley where they are attacked. They find June under a spell and with magical powers, controlled by Charles Agar, a criminal from the states.
- Ghostly Miners · 1 pages
Characters
Reprinted in
Challengers of the Unknown (1960), Challengers of the Unknown Archives (2003), Showcase Presents Challengers of the Unknown (2006), Challengers of the Unknown by Jack Kirby (2012), Challengers of the Unknown by Jack Kirby (2017), The Hundred Comic Monthly (1956), All Favourites, The 100-Page Comic (1957), Blackhawk (1957), Super DC Giant (1970)