Dates
- Cover date
- December 1958-January 1959
- On sale
- October 16, 1958
- Pages
- 36
Editions and covers
- Original editionSource ↗
Creators
Stories
- The Riddle of the Star-Stone, Chapter One · 7.67 pages
Professor Brandon's assistant Vreedl has stolen the Star-Stone, a device created by an ancient sorcerer, and is stealing gems to place in the stone and give himself powers. The first gem makes Vreedl into a flame man and allows him to start a stampede and delay the Challs while he secures a second gem.
- Chapter Two: The Birdman of Djiizari! · 7.67 pages
The second gem turns Vreedl into the "Birdman of Djiizari" and with that flying power he escapes the Challs.
- The Singing Sorceress · 1 pages
- Chapter Three: The Challenge of the Super Creature! · 8.67 pages
With another gem, Vreedl becomes a fish man and again evades the Challs. Finally, with the fourth gem, Vreedl becomes invincible until Ace points out that anyone could become like him through possession of the stone, so Vreedl destroys it, transforming himself back into an ordinary man.
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), My Greatest Adventure (1955), Mighty The 100-Page Comic! (1957), Flash Album (1965)