Captain Marvel Jr. #10
In "The Moon Menace," Japanese scientist Kursyu unleashes a sinister formula that turns Caucasians into loyal Japanese agents under Imperial Japan’s control. When General Otis becomes his first victim, Captain Marvel, Jr. must step in—only to face the same threat, forcing Freddy Freeman to use his powers to outwit Kursyu and steal the White Serum to reverse the transformation. Written by Otto Binder and illustrated by Mac Raboy, this 1943 Fawcett classic features dynamic art by Raboy on both interior and cover, capturing the wartime tension and heroism of the era.
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Japanese scientist Kursyu develops a formula which transforms Caucasians into Japanese who are loyal to Imperial Japan. General Otis is Kursyu's first victim and when Captain Marvel, Jr. intervenes, Freddy Freeman is next. However, Freddy is able to clear his mind by becoming Captain Marvel, Jr. and, pretending to be still loyal to Kursyu, he steals the White Serum which turns Kursyu's victims back to normal.
Plot details indexed by the Grand Comics Database (CC BY-SA).