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Marvel Super-Heroes #25 cover
Cover: Jack Kirby & Chic Stone

Marvel Super-Heroes #25

Mar 1970 · Marvel · 0.25 USD
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In "Sub-Mariner! Joins the Evil Mutants," the Sub-Mariner finds himself entangled in a high-stakes clash when a foreign spy hijacks an indestructible robot built by Bruce Banner—only to unleash it on the world. With the Hulk transformed and the robot out of control, the fate of the planet hangs in the balance as Banner, now powerless and vulnerable, vows to build a better weapon. Stan Lee and Steve Ditko deliver a tense, character-driven tale of ambition and consequence, with Jack Kirby's dynamic cover capturing the chaos.

Contains 3 stories
Sub-Mariner! Joins the Evil Mutants
22 pp · Superhero
The X-Men [Professor XCyclopsMarvel Girl [Jean Grey]AngelIcemanBeast]The Brotherhood of Evil Mutants [MastermindMagnetoToadQuicksilverScarlet Witch]Namor, the Sub-Mariner

In a 1970 tale from Marvel Super-Heroes #25, Namor’s underwater realm becomes the center of a surprising clash when Professor Xavier and Magneto both speculate he might be a mutant—leading Magneto to invade with an unexpected offer. Enchanted by the Scarlet Witch’s influence, Namor considers joining the Brotherhood, but when the X-Men arrive, the Sub-Mariner must decide where his loyalties truly lie.

The Incredible Hulk
10 pp · Superhero
Hulk [Bruce Banner]Thunderbolt RossBetty RossBanner Bot

When Bruce Banner completes an indestructible robot capable of surviving a nuclear blast, the strain of the deadline triggers his transformation into the Hulk—leaving the powerful machine unattended. A foreign spy seizes the opportunity, hijacking the robot and fleeing into the desert. The Hulk gives chase, but after a grueling struggle, he collapses and reverts to Banner. Found unconscious in the sand by General Ross and Betty, Bruce vows to build a stronger robot to stop the first one before it causes greater damage.

Mask!
20 pp · Superhero
DaredevilFoggy NelsonKaren PageThe Matador [Manuel Eloganto] (first appearance, origin)

In "Mask!", a disgraced matador, driven by a bitter grudge, dons a dramatic cape and becomes a criminal seeking revenge on the world that cast him aside. Daredevil must confront the flamboyant menace, whose relentless cape-waving becomes a deadly distraction, while grappling with his own shifting emotions—when Foggy reveals his plans to propose to Karen, Matt is left torn, choosing silence over confession and embracing solitude instead.

ComicBooks.com Value

Our Model is In Beta
Raw (Fine) $9
CGC 9.8 · 3 in census $976*
CGC 9.6 · 5 in census $289*
CGC 9.4 · 7 in census $167*
CGC 9.2 · 3 in census $118*
CGC 9.0 · 2 in census $96*
CGC 8.5 · 2 in census $79*
Show all 13 grades
CGC 8.0 · 1 in census $72*
CGC 7.5 · 3 in census $63*
CGC 7.0 · 1 in census $54*
CGC 6.5 · 1 in census $49*
CGC 6.0 none in existence
CGC 5.5 none in existence
CGC 5.0 · 1 in census $35*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

More listings for this title

FN $9.99 MARVEL SUPER-HEROES Issues 25 1969 Marvel Comics $6.97
Related listings we couldn't confirm as this exact issue · 2 total · seen 24 days ago

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Full credits

writer Stan Lee
letterer Sam Rosen
cover pencils Jack Kirby
cover inks Chic Stone

Reprints

↩ Reprints The X-Men #6 (1964), Tales to Astonish #60 (1964), Daredevil #5 (1964)

Reprinted in The Incredible Hulk Omnibus #1 (2008), Daredevil Omnibus #1 (2017), Marvel Origins #47 (2025)

Key issues in Marvel Super-Heroes

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