Superman's Pal, Jimmy Olsen #50
In "The Lord of Olsen Castle!", Jimmy Olsen finds himself unexpectedly wielding 100% of Superman’s powers after a malfunctioning device meant to transfer Lex Luthor’s invention to him goes awry at his own birthday party. With the full weight of super-speed and strength, Jimmy struggles to reverse the transformation while the city watches, all drawn to the new, impossible figure at the center of the chaos. Art by Al Plastino brings the whimsical yet high-stakes adventure to life, while Curt Swan and Stan Kaye’s dynamic cover captures Jimmy’s sudden, towering presence.
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Professor Potter perfects an unsucessful invention of Lex Luthor's that switches a percentage of Superman's powers to Jimmy during a surprise birthday party for Jimmy. But he sets the machine improperly and Jimmy gets 100% of Superman's powers. Jimmy spends endless hours at Super-Speed re-wiring the machine to reverse the effects and return his powers to Superman.
Plot details indexed by the Grand Comics Database (CC BY-SA).