Colossal Boy (disambiguation) | DC Database | Fandom

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Colossal Boy is a human member of the Legion of Super-Heroes in the 30th Century. Exposure to a radioactive meteorite gave him the ability to grow incredibly large. His mother is President Allon, and his wife is Chameleon Girl. In Reboot Legion continuity, he is a member of the Science Police who takes the name Leviathan when he joins the Legion. This version dies in battle against Doctor Regulus. In Prime Legion continuity, he belongs to a race of giants and has the power to shrink to normal size. Everyone calls him Colossal Boy, but he insists that his name is Micro Lad.

Colossal Boy was created by Jerry Siegel and Jim Mooney, first appearing in Action Comics #267 (1960).

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Leviathan

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