| Issue | #13 |
| Published | April-May 1960 |
| Frequency | Bi-Monthly |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Jack Schiff |
| Notes | Learn more about the Challengers at www.challengersoftheunknown.com. |
| Characters | Challengers of the Unknown [Ace Morgan; Red Ryan; Prof Haley; Rocky Davis]; a centaur |
| Genre | Super Hero; Adventure; Hero Team |
| Pencils | Bob Brown |
| Characters | Challengers of the Unknown [Ace Morgan; Rocky Davis; Prof Haley; Red Ryan]; Zanna; Vraba; Benrun; Ak-Selians; Dakyab and his gang |
| Synopsis | A tiny rocket ship lands near Challenger Mountain. Inside Prof finds a tiny gold ball. Which is snatched by an alien spaceman, who runs for his own spaceship! Prof tackles him. X-rays show a tiny man inside. The ball pops open and the prisoner expands to normal size. He is Zanna, former ruler of the planet Ak-Sel. He was overthrown by an insurgent, Dakyah, shrunk, and exiled into space. In the would-be thief’s spaceship, the Challengers and Zanna fly to Ak-Sel. Zanna’s underground fighters hide in an extinct volcano. But Dakyah’s troops attack. Blacking out the complex, Zanna’s fighters and the Challengers fly to a floating island, one of many. Dakyah plans an attack from his palace. The Challengers counter-attack. With precision flying, they float the entire island over the palace and attack in jet-sleds! The Challengers blow up the main defenses and land. Zanna’s army overruns the palace. Victory! Where’s Dakyah? Trapped in a tiny space ball! He hoped to escape and be rescued later. The Challengers, their help greatly appreciated, will be flown back to Earth. |
| Genre | Super Hero; Adventure; Hero Team |
| Script | France Ed Herron |
| Pencils | Bob Brown |
| Notes | writer id by Bob Hughes |
| Reprinted | In Showcase Presents Challengers of the Unknown (DC, 2006 series) #1 |
| Characters | Senator Hiram L. Fong; Senator Oren E. Long; Rep. Daniel K. Inouye |
| Synopsis | A celebration of Brotherhood Week and Hawaii as our 50th state. |
| Genre | Fact |
| Script | Jack Schiff |
| Pencils | Bernard Baily |
| Inks | Bernard Baily |
| Letters | Ira Schnapp |
| Synopsis | Comparisons between the size of Mercury and Australia, the Moon and Europe, and the Sun against other stars. |
| Genre | Fact |
| Genre | science fiction |
| Letters | Typeset |
| Characters | Dr. Floogle |
| Synopsis | Dr. Floogle has mixed up two vials of chemicals. |
| Genre | Gag; Humor |
| Script | Henry Boltinoff |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |
| Characters | Challengers of the Unknown [Ace Morgan; Rocky Davis; Prof Haley; Red Ryan]; June Robbins; Dr. Henry; a cyclops; a centaur; a dragon. |
| Synopsis | Off the island of Colchis near Greece, Dr. Henry has a recently-uncovered volume that claims the Golden Fleece was real. June has been helping. The party lands near ruins and splits up to search. Rocky falls into a cellar and finds the Golden Fleece! He dons it to climb out. But feels dizzy... Searching, the Challengers spot Rocky in the fleece. He runs - and a flame-breathing dragon charges, then vanishes. Dr. Henry guesses Rocky is “trapped in the fleece’s powers” and summons mythical creatures from a “never-never land.” An ancient vase of fluid might be important. Hunting Rocky, the Challengers are grabbed by a cyclops! Ace recalls its weakness is vision. He grabs a beehive and pitches it. Assailed by bees, the cyclops hides in a grotto. Dr. Henry and June have deciphered that the fluid changes gold to base metals - it can destroy the fleece’s power. While Rocky charges Ace and Red on a centaur! Prof snags a hoof with a vine, cowboy-style. Rocky hears a strange siren song and wanders to the beach. A mermaid sings - then flings fluid in Rocky’s face. It’s June in disguise! The golden fleece fades to normal. With the magic gone, Rocky’s head clears. The mythical creatures fade away to the land of legends. |
| Genre | Super Hero; Adventure; Hero Team |
| Script | Dave Wood? |
| Pencils | Bob Brown |
| Notes | writer id by Bob Hughes |
| Reprinted | In Showcase Presents Challengers of the Unknown (DC, 2006 series) #1 |