Colossal Boy
Gim Allon
25 series
702 issues
Gim Allon is Colossal Boy, a Legionnaire from Mars who possesses the ability to grow to enormous size, first appearing in Action Comics #267 in 1960 during the early expansion of the Legion of Super-Heroes roster. Created by Jerry Siegel and Jim Mooney, he is among the longest-serving members of the Legion and has been a consistent presence across the team's many decades of publication in various continuities.
Real Name
Gim Allon
Hero Name
Colossal Boy
Publisher
First Appearance
Powers
Super Strength, Flight, Gadgets, Size Manipulation
Gender
Male
Teams
Teammates
Appears alongside
Story Arcs
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