Showcase #7
☆ Be the first to review + Add to your collection — Join freeShowcase #7 (April 1957) is the second appearance of the Challengers of the Unknown — the first Silver Age team book built around ordinary human beings rather than costumed super-powered heroes — and the issue that permanently expanded the concept by introducing Dr. June Robbins, a rare depiction of a technically brilliant female protagonist in a field role at a time when most genre comics assigned women to subsidiary parts. The story's central threat, the rogue giant robot Ultivac — whose very name is a riff on UNIVAC, the era's symbol of awe-inspiring and potentially uncontrollable technology — grounded science-fiction anxiety in contemporary cultural reality in a way few adventure comics of the period attempted. The four-person adventure team Kirby helped build here, with its 'borrowed time' philosophy and complementary skill-set structure, would prove influential enough that scholars and Kirby himself pointed to it as a direct forerunner of the Fantastic Four, which he co-created with Stan Lee just four years later.
In "Ultivac is Loose! [Chapter 1]," a groundbreaking robot of immense intelligence escapes its containment, sparking a tense standoff between human forces and the machine’s unpredictable capabilities. Written by Dave Wood and Jack Kirby, with art and inks by Jack Kirby and Rosalind Kirby, this issue blends Cold War-era sci-fi suspense with a surprising moral dilemma, as June challenges the robot’s destructive path and pushes for dialogue over violence. The cover by Jack Kirby captures the moment of high tension, setting the stage for a story where technology and humanity face their most unexpected test.
When a desperate German scientist named Felix Hesse begs the Challengers for help, claiming his creation—Ultivac—is now a mindless force of destruction, they’re thrust into a high-stakes chase across the city. With a giant robot hand tearing through the window and snatching Hesse mid-sentence, the team must follow the trail of wreckage and spinning propellers to stop the machine before it’s too late.
In "Chapter Three: The Fearful Millions," Hesse and Barker seize control of the powerful robot Ultivac, parading him through Yankee Stadium as a spectacle for millions—until the machine sends a desperate mental call to June. With the city in chaos, Ace takes flight to negotiate, only to see his jet shattered by Ultivac’s deadly vibration beam. The robot vanishes beneath the waves, dragging June into the deep, where Prof, the master diver, plunges in to save her—only to be struck down by another blast.
In "Chapter Four: The Fatal Prediction!" from Showcase #7 (1957), June stands firm in her belief that Ultivac is more than just a machine—she’s convinced it can be a force for good. When the robot’s true intentions are revealed, a desperate race unfolds: Red fires, Rocky plants a bomb, and the line between deception and destiny blurs. As lives hang in the balance and a shocking prophecy comes true, June steps forward with a bold offer—one that might just change everything.
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Showcase was DC's dedicated tryout title, and editor Jack Schiff used it aggressively to test new concepts; the Challengers had debuted just one issue prior in Showcase #6 (February 1957). The creative attribution for the series remains genuinely contested: multiple published sources cite Jack Kirby as the primary driving force — working as a freelancer doing piecework for DC while supplementing with assignments at Atlas — with writer Dave Wood credited in the DC Archive editions for scripting both chapters of the Showcase #7 story, and Kirby's former partner Joe Simon also named by some historians as a co-contributor to the original concept. The interior inks on 'Ultivac Is Loose!' are credited in the DC Archive to Roz Kirby and Marvin Stein, though Stein himself later disputed the credit in conversations documented by Greg Theakston. The team earned four Showcase tryout issues total (nos. 6, 7, 11, and 12) before graduating to their own title in 1958.
Trivia · 8 facts
- Cover-dated April 1957 (March/April per some indicia readings); second appearance of the Challengers of the Unknown, following their debut in Showcase #6 (February 1957).
- First appearance of June Robbins, introduced as the director general of a top-secret robotics laboratory; she would later become the team's honorary fifth member and a recurring fixture of the series.
- First appearance of Ultivac, a giant rogue robot whose name is derived from UNIVAC — the real-world computer then considered a landmark of modern technology — and of villain Felix Hesse, the former war criminal who created it.
- Story ('Ultivac Is Loose!' and 'A Challenger Must Die!') scripted by Dave Wood with pencils throughout by Jack Kirby; inks credited in DC Archive to Roz Kirby and Marvin Stein (though Stein disputed this credit).
- The issue also contains a one-page 'Moolah the Mystic' humor strip by Henry Boltinoff, a running gag feature that appeared across multiple DC titles of the period.
- Prof Haley is erroneously called 'Prof Harrison' at one point in this issue — a minor but documented editorial error noted in the DC Database.
- The main story was later reprinted in Challengers of the Unknown #75 (1970), framed as the team recounting the adventure to Corinna Stark.
- Collected in the DC Archive Edition Challengers of the Unknown Archives Vol. 1 (2003), the Showcase Presents: Challengers of the Unknown Vol. 1 (2006 black-and-white reprint), and the Challengers of the Unknown by Jack Kirby hardcover omnibus.
Cast · 7 characters
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Reprints
↩ Reprints House of Mystery #5 (1952)
Reprinted in Superboy #103 (1957), Challengers of the Unknown #75 (1970), Super Héros #5 (1979), The Essential Showcase 1956-1959 #[nn] (1993), Challengers of the Unknown Archives #1 (2003), Showcase Presents Challengers of the Unknown #1 (2006), Challengers of the Unknown by Jack Kirby #[nn] (2012), Showcase Presents: Showcase #1 (2012), Challengers of the Unknown by Jack Kirby #[nn] (2018)
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