Monsters on the Prowl #27
In "Sserpo! the Creature Who Crushed the Earth!", a discarded growth serum transforms a humble lizard into a planet-threatening giant—only for the crisis to be resolved by a daring call to alien allies from Jupiter, thanks to the ingenuity of the serum’s great-grandson. Written by Stan Lee and Larry Lieber, with dynamic art by Jack Kirby and inks by George Klein, this 1973 Marvel classic delivers a wild, imaginative sci-fi adventure with a uniquely cosmic twist. The cover, penciled by Kirby and inked by Klein, captures the towering menace with thrilling flair.
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A growth serum is abandoned and eaten by a lizard, which grows big enough to menace the Earth. The world is only saved when a scientist, the great-grandson of the inventor of the serum, contacts aliens on Jupiter, who use their advanced technology to restore the creature to normal.
Plot details indexed by the Grand Comics Database (CC BY-SA).