Tags: Comics Character.
Gim Allon also known as Leviathan and Micro Lad is a fictional character in the 30th and 31st centuries of the DC Comics universe who has gone by a variety of superhero names over the past several decades although originally (and most commonly) Colossal Boy. He is a member of the Legion of Super-Heroes. He first appeared in Action Comics #267 (August 1960).