Planet Comics #42
☆ Be the first to review + Add to your collection — Join free"Slave of the Hydra" delivers a classic pulp sci-fi thrill from 1946, where Dr. Grey’s defiance of Mysta ignites a dangerous transformation after a radioactive explosion. Written by Ross Gallun and illustrated by Fran Hopper, this issue blends early atomic-age anxiety with a chilling personal vendetta, all wrapped in Joe Doolin’s striking cover art.
When an Earthling captured by the Voltans undergoes a sinister transformation that turns him into one of their own, he's given a mission to infiltrate Hunt Bowman's resistance and destroy them from within. Torn between his reprogrammed Voltan loyalty and the humans who saved him, Frok must navigate a deadly deception that puts everyone—including the woman he's come to care about—in mortal danger.
In the 1946 sci-fi tale "null" from Planet Comics #42, Dr. Grey, forbidden by Mysta from pursuing his atomic research, pushes forward—only to be transformed by a catastrophic explosion. Now radiating dangerous power, he vows revenge on Mysta and sets his sights on destroying the moon.
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Reprinted in Jumbo Comics #164 (1952), Roy Thomas Presents Planet Comics #10 (2015), Gwandanaland Comics #366 (2017), Gale Allen and the Girl Squadron #1 (2024), Gale Allen and the Girl Squadron #6
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