Colossal Boy
From superman.nu: Supermanica
Colossal Boy
Earth's Gim Allon is Colossal Boy, imbued with the power of super-growth gained from the radiation effects of a meteor from outer space that he encountered on the planet Mars (first appearance: Act No. 267/2, Aug 1960: "The Three Super-Heroes"). From the 30th century, he is a member of the Legion of Super-Heroes.
