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Challengers of the Unknown #3 cover
Cover: Jack Kirby & Roz Kirby

Challengers of the Unknown #3

Aug 1958 · DC · 0.10 USD
📊 ~18,116 copies sold its debut month
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In "The Secret of the Sorcerer's Mirror," the Challengers of the Unknown are drawn into a bizarre experiment when a monkey infused with meteorite-derived serum gains superpowers and rockets into space—only for Rocky to take the same pill and crash-land with newfound abilities. Written by Dave Wood and Jack Kirby, with art by Jack Kirby and inks by Marvin Stein, this 1958 issue sees Rocky gain freeze rays, super strength, and invisibility, but his mind begins to unravel. Cover by Jack Kirby and Roz Kirby, the story unfolds as a crook tries to exploit Rocky’s powers—until a chance encounter with the Challengers and June sparks a moment of clarity.

Contains 5 stories
The Secret of the Sorcerer's Mirror
12 pp · Adventure
Kregon the Sorcerer (flashback)Hillary MycroftMycroft's ganga genie

In "The Secret of the Sorcerer's Mirror," the Challengers of the Unknown race against time to recover a stolen mirror and chart linked to ancient secrets, pursued by the cunning Hillary Mycroft and his gang. The mirror reveals three perilous locations—deep beneath the sea, atop a stone needle, and on the fabled Sinbad's Island—sending the team into a high-stakes split-up adventure. As Mycroft closes in on assembling the mysterious globes, a hidden betrayal may change everything.

Untitled Humor story
0.5 pp · Humor
The Menace of the Invincible Challenger
12 pp · Adventure
Professor CurtisChopperRoxie

In "The Menace of the Invincible Challenger," the Challengers of the Unknown are drawn to a mysterious lab where a monkey, enhanced by a meteorite-derived pill and sent into space, has fallen into a coma. When Rocky takes the same pill and rockets into orbit, he returns with astonishing powers—freeze rays, super strength, and invisibility—but also a fractured mind. As a crook exploits his strength for crime, the Challengers and June arrive just as Rocky’s buried decency begins to surface.

Untitled Humor story
1 pp · Humor
Untitled Humor story
1 pp · Humor
the Sultan

ComicBooks.com Value

Our Model is In Beta
Raw (VG) $30
CGC 9.0 · 3 in census $1,076*
CGC 8.5 · 3 in census $736*
CGC 8.0 · 2 in census $567*
CGC 7.5 · 5 in census $545
CGC 7.0 · 3 in census $378*
CGC 6.5 · 6 in census $316
Show all 18 grades
CGC 6.0 · 13 in census $284
CGC 5.5 none in existence
CGC 5.0 · 13 in census $221*
CGC 4.5 · 15 in census $176*
CGC 4.0 · 14 in census $175*
CGC 3.5 · 12 in census $140
CGC 3.0 · 5 in census $112*
CGC 2.5 · 5 in census $98*
CGC 2.0 · 5 in census $76*
CGC 1.5 none in existence
CGC 1.0 · 1 in census $50*
CGC 0.5 · 1 in census $46*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

This exact issue on

CGC 6.5 $1,500 1 listing CGC 3 $600 1 listing
Raw — NM $3.99–$24 2 listings
Raw — VF+ $5.19 1 listing Raw — FN $5.99 1 listing
Raw / ungraded $3.49–$484 3 listings
Verified matches for Challengers of the Unknown #3 · eBay asking prices, seen 32 days ago
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Cast · 8 characters

Full credits

writer Dave Wood
writer, artist Jack Kirby
letterer Pat Gordon
cover pencils, inks Jack Kirby
cover inks Roz Kirby

Reprints

↩ Reprints The Adventures of Bob Hope #3 (1950)

Reprinted in Mighty The 100-Page Comic! #9 (1959), The Hundred Comic Monthly #30 (1959), Challengers of the Unknown #76 (1970), Aventures Fiction #44 (1975), Super Héros #7 (1980), Super Héros #8 (1980), Challengers of the Unknown Archives #2 (2004), Showcase Presents Challengers of the Unknown #1 (2006), Challengers of the Unknown by Jack Kirby #[nn] (2012), Challengers of the Unknown by Jack Kirby #[nn] (2018), Titanes Planetarios #78

Key issues in Challengers of the Unknown

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