Data courtesy of the Grand Comics Database under Creative Commons license.

Issue Details

Issue #39
Published August-September 1964
Cover Price 0.12
Pages 36
Editing Murray Boltinoff
Notes Learn more about the Challengers at www.challengersoftheunknown.com.

Cover Details - "Rocky, the Genius Challenger!"

Characters Challengers of the Unknown
Genre Adventure
Pencils Bob Brown
Inks Bob Brown
Notes Learn more about the Challengers at www.challengersoftheunknown.com.

14 page Challengers of the Unknown story "The Phantom of the Fair"

Characters Challengers of the Unknown [Ace Morgan; Red Ryan; Rocky Davis; Prof Haley]; Madame Zaddum; The Sons of the Challengers [Young Ace; Young Red; Paul Haley; Roxie Davis]; June Robbins; Skokie Johnson.
Synopsis The Challengers again visit Madame Zaddum for a peek at their possibly-future children. Gazing into the crystal ball, they instead see Skokie Johnson, a crook they arrested yesterday, though this is 25 years in the future. Skokie learned an Aztec "fountain of youth" formula and made himself young. He vows to make the Challengers into kids as revenge, and sends a boobytrapped package. Skokie travels to his long-buried loot, but finds the World's Fair of 1989-90 being built on the spot. Digging up the top-secret capsule, he releases a huge "phantom" that wreaks havoc. The elder Challengers, all gray, are on tour, but get stranded with plane trouble. The Challenger Kids - three sons and a daughter - helicopter to battle the Phantom. Bombs won't stop it. The kids decide to use a wind tunnel fan to disperse it, but are too small. Their dads arrive just in time to blow the Phantom to shreds. Skokie Johnson's revenge package was thrown out accidentally, so never worked. And Skokie reverts to old age and is arrested. The Challs vote to peek in again on their "sons and daughter". (But never do.)
Genre Adventure
Script France Ed Herron?
Pencils Bob Brown
Inks Bob Brown
Notes The second and last "Sons of the Challengers" story. The first was in COTU #35. Writer id by Bob Hughes

11 page Challengers of the Unknown story "Rocky, the Genius Challenger"

Characters Challengers of the Unknown [Ace Morgan; Red Ryan; Rocky Davis; Prof Haley]; Wizard Welles.
Synopsis The Challengers surround the lab of "Wizard" Welles, greatest brain of the underworld. Wizard has built an electronic brain (computer) to transfer its infinite knowledge to his own brain. Rocky drops through a skylight and gets brain-zapped instead. His cranium swells to mega-size. Rushed to the hospital, Rocky himself dictates a drug regime to repair his electrical burns. He's a genius! He tells doctors how to adjust drugs, advises Prof and Red on their gadgets and Ace on his jet, and generally becomes a super-smart snob. Wizard freezes citizens solid with red snow. Rocky concocts a gadget and super-melts it. Wizard uses a force field and bell-jar vehicle to steal chemicals. Rocky tosses radioactive dust to track it. The electronic brain, meanwhile, sits inside a force field and calculates the formula for an (unnamed) ultimate weapon. Rocky matches wits to out-think the computer, and it blows up from overload. Rocky's back to normal, as Red quips, "beautiful but dumb!"
Genre Adventure
Script Arnold Drake?
Pencils Bob Brown
Inks Bob Brown
Notes writer id by Bob Hughes