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Monsters Unleashed #6 cover
Cover: Boris Vallejo

Monsters Unleashed #6

Jun 1974 · Marvel · 0.75 USD
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In "Thunderbird," the original brain of the Frankenstein Monster is restored to his body, setting off a chilling transformation as the mind of James takes residence in the corpse of Derek McDowell. Written by Doug Moench and brought to life with dynamic art by Val Mayerik, this 1974 Marvel classic features a haunting twist on identity and resurrection, with Boris Vallejo’s striking cover capturing the eerie intensity of the tale.

Contains 7 stories
Thunderbird
1 pp · Horror-Suspense
Always a Monster!
12 pp · Horror-Suspense
Frankenstein Monster (also in flashback)The Master (first appearancevillain)Derek McDowell (resurrected as James)James (flashback, death, resurrection as Derek, death)Dr. Wallach (flashback, death)PeterRalph

In "Always a Monster!", the fate of two men is twisted by science and madness: the original brain of the Frankenstein Monster is restored to his body, while James’s mind finds itself trapped in the corpse of Derek McDowell. The line between man and monster blurs as identities fracture and the past refuses to stay buried.

The Strange Children!
5 pp · Horror-Suspense

In "The Strange Children!", a vengeful sorcerer, betrayed by a town that refused to honor their pact, unleashes a chilling retribution—turning the children of the community into swarming roaches, leaving the adults to face the horror they helped create.

Darkflame!
7 pp · Horror-Suspense
The Maggots!
3 pp · Horror-Suspense
The Waters of Werewolves
2 pp
Adolf Hitler (cameo)
The Scrimshaw Serpent
10 pp · Horror-Suspense

ComicBooks.com Value

Our Model is In Beta
Raw (Fine) $21
CGC 9.8 · 8 in census $323*
CGC 9.6 · 13 in census $96
CGC 9.4 · 9 in census $55*
CGC 9.2 · 6 in census $39*
CGC 9.0 · 2 in census $32*
CGC 8.5 · 1 in census $26*
Show all 12 grades
CGC 8.0 · 1 in census $20*
CGC 7.5 none in existence
CGC 7.0 · 2 in census $20*
CGC 6.5 · 1 in census $20*
CGC 6.0 none in existence
CGC 5.5 · 1 in census $20*
* 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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Full credits

artist, inker Val Mayerik
letterer Jean Izzo
cover pencils, inks Boris Vallejo

Reprints

↩ Reprints Adventures into Terror #19 (1953)

Reprinted in Monsters Unleashed Annual #1 (1975), Dracula Lives #46 (1975), Lobisomem (Capitão Mistério Apresenta) #4 (1977), Castle of Horror #4 (1978), Kull #[nn] (1984), Essential Monster of Frankenstein #1 (2004), Monster of Frankenstein #[nn] (2015), Werewolf by Night Omnibus #[nn] (2015), Marvel Horror: The Magazine Collection #[nn] (2017), Werewolf by Night: The Complete Collection #2 (2018), Werewolf by Night - Classic Collection #1 (2020), Marvel Masterworks: Werewolf by Night #2 (2023), Das Monster von Frankenstein #30, Monster Monthly #2

Key issues in Monsters Unleashed

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