| Issue | #15 |
| Published | August-September 1960 |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Jack Schiff |
| Notes | Learn more about the Challengers at www.challengersoftheunknown.com. |
| Characters | June Robbins; Challengers of the Unknown [Ace Morgan; Rocky Davis; Prof Haley; Red Ryan] |
| Genre | Adventure |
| Pencils | Bob Brown |
| Inks | Bob Brown |
| Characters | Challengers of the Unknown [Ace Morgan; Rocky Davis; Prof Haley; Red Ryan]; Duncan Pramble [Multi-Man]; Gurk; prison guards; Central American natives |
| Synopsis | In prison, an explosion "kills" Multi-Man. He resurrects with super-strength and breaks out. He meets Gurk, a wizard-collector, who wants three parts of a Golden Turtle statue. The Challengers track MM, who almost kills them with a steam shovel. MM and Gurk steal two parts to the statue and fly to Central America. Natives guard a temple and the third piece, which Gurk steals while the Challs dump antidote on Pramble, who reverts to a normal man. Gurk has assembled the statue, which unlocks a secret door pointing to lost tribal treasure. Pramble was speared and reached a final, permanent form: a frail body and giant head with super-genius. Gurk and MM are captured, but the Challs fret that MM's new super-brain will cause "plenty of trouble in the future". |
| Genre | Adventure |
| Script | Ed (France) Herron ? |
| Pencils | Bob Brown |
| Inks | Bob Brown |
| Notes | Multi-Man does return often as the Challs' arch-enemy, plaguing them with his super-brain AND morphing powers. Writer id by Bob Hughes. |
| Reprinted | in Hundred Plus Comic, The (K. G. Murray, 1959 series) #50; in Showcase Presents Challengers of the Unknown (DC, 2006 series) #1 |
| Characters | Challengers of the Unknown [Ace Morgan; Rocky Davis; Prof Haley; Red Ryan]; June Robbins; citizens; a microbe beast |
| Synopsis | Alone in Challenger Mountain, June experiments on space spores brought to Earth by a balloon. They explode and she blacks out. The Challs return to find June is giant-sized and hostile, trying to crush them, but she passes out. Another menace is a huge red dragon-beast menacing a local town. June revives, sensible again, and grapples the monster. The beast avoided crossing a stream, so the Challs commandeer a fire truck and hose it. The beast shrinks to nothingness. It was actually a microbe monster! |
| Genre | Adventure |
| Script | Dave Wood ? |
| Pencils | Bob Brown |
| Inks | Bob Brown |
| Notes | The story may have been inspired by the 1958 Science Fiction film "Attack of the 50 Ft. Woman". Writer id by Bob Hughes. |
| Synopsis | Two deep-sea scientists in a bathysphere are attacked by a giant octopus. |
| Genre | Adventure |
| Letters | typeset |
| Notes | This story is not a Challengers story; reprint was edited to replace non-Challengers characters with Ace and Prof. |
| Reprinted | in Super DC Giant (DC, 1970 series) #S-25 (July-August 1972) |
| Synopsis | Announces the first Superman Annual featuring "First" stories. |
| Genre | superhero |
| Notes | House ad for the first DC Annual, Superman Annual (1960 series) #1. |
| Characters | Superman |
| Synopsis | Superman advises two boys to welcome war refugees like Sandor. Commemorates the United Nations World Refugee Year. |
| Pencils | Curt Swan |
| Inks | Curt Swan ? |