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Creatures on the Loose #23 cover
Cover: John Romita

Creatures on the Loose #23

May 1973 · Marvel · 0.20 USD
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In "Where Broods the Demon!", Thongor faces his greatest trial yet when he's captured and imprisoned by the malevolent Demon of Zangabal. With the help of fellow captive Ald Thurmis, he escapes the dungeon and must wield the legendary Shield of Cathloda to confront the ancient evil. Written by George Alec Effinger and illustrated by Val Mayerik, with inks by Vince Colletta and colors by Glynis Wein, this 1973 Marvel adventure blends sword-and-sorcery grit with cosmic mystery. The cover, penciled and inked by John Romita, captures the dread of the Demon’s domain.

Contains 2 stories
Where Broods the Demon!
15 pp · Sword And Sorcery
Black Hawk Tribe [Thumitor (mentioned)]ValkarthansAld ThurmisFather Gorm (mentioned)Kaman ThuuGods of Zangabal (mentioned)Demon of Zangabal (dies)Athmar Phong (dies)Aqquoonkagua [Prince of Hell]

In "Where Broods the Demon!", Thongor finds himself captured and imprisoned by the fearsome Demon of Zangabal, but his fate takes a turn when he meets the imprisoned Ald Thurmis. Together, they escape the dungeon and face the Demon with the legendary Shield of Cathloda—only for Thongor to stumble into a new peril when he’s captured again by Athmar Phong. When he accidentally shatters the Black Mirror, a powerful entity awakens, and the consequences ripple beyond the mortal realm.

The Coming of the Giants!
5 pp · Science Fiction
Giants

In "The Coming of the Giants!" from Creatures on the Loose #23 (1973), humanity’s pride in its spacefaring ambitions is upended when colossal alien giants descend upon Earth—only to overlook the planet entirely, their sheer size rendering human civilization invisible. The story explores the quiet irony of survival through insignificance, where the very thing that makes us small becomes our greatest shield.

ComicBooks.com Value

Our Model is In Beta
Raw (Fine) $7
CGC 9.8 · 11 in census $313*
CGC 9.6 · 16 in census $93*
CGC 9.4 · 6 in census $54*
CGC 9.2 · 2 in census $38*
CGC 9.0 · 1 in census $31*
CGC 8.5 · 1 in census $30*
Show all 9 grades
CGC 8.0 none in existence
CGC 7.5 · 1 in census $30*
CGC 7.0 · 1 in census $30*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

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Cast · 1 character

Full credits

colorist Glynis Wein
letterer John Costanza
cover pencils, inks John Romita

Reprints

↩ Reprints Tales of Suspense #34 (1962)

Reprinted in L'étonnant Spider-Man #25 (1973), Frankenstein #2 (1975), Savage Sword of Conan #14 (1975)

Key issues in Creatures on the Loose

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