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Colossal Boy (DC)(Earth-0)
Real Name: Gim Allon
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Growth to 25 feet.

Gim Allon was mutated by a radioactive meteorite which gave him the ability to increase his size up to 25 feet. Following this incident, his parents encouraged him to join the Legion of Super-Heroes.

Gim had a long-time crush on fellow Legionnaire Shrinking Violet which was largely unreciprocated. For a brief time, Violet was impersonated by a shapeshifter named Yera who Gim then fell in love with and eventually married.

Gim's mother Marte Allon was the president of Earth following the Great Darkness Saga.


First Appearance: Action Comics (1938) #267

Other Identities:
Gim Allon (DC)(Legion - 5 Years Later)

Favorite Characters:
Colossal Boy (DC)(Earth-0) is a favorite character of 3 users

View a chronological listing of this character's appearances

Issue Appearances:
52 (2006)
A DC Universe Christmas (2000)
Action Comics (1938)
Adventure Comics (1938)
Adventure Comics (2009)
All-New Collectors' Edition (1978)
All-Star Squadron (1981)
Amazing World of DC Comics (1974)
Booster Gold (2007)
Christmas With the Super-Heroes (1988)
Comic Jahrbuch (1985)
Convergence Booster Gold (2015)
Convergence Superboy and the Legion of Super-Heroes (2015)
Convergence: Crisis (2015)
Convergence: Infinite Earths (2015)
Crisis on Infinite Earths (1985)
DC 100-Page Super Spectacular (1971)
DC Comics Classics Library (2009)
DC Comics Presents: Legion of Super-Heroes (2011)
DC Retroactive: Superman - The '80s (2011)
DC Special Series (1977)
DC Universe (2008)
DC/WS DreamWar (2008)
DCU Holiday Special 2010 (2011)
DCU: Legacies (2010)
Elson's Presents Super Heroes Comics (1981)
Final Crisis: Legion of Three Worlds (2008)
Heroes (1991)
History of the DC Universe (1986)
Infinity Inc. (1984)
Justice (2005)
Karate Kid (1976)
Karate Kid (1977)
La Legion Des Super-Heros (1984)
La Legion des Super-Heros et les Nouveaux Jeunes Titans (1984)
Legends of the DCU: Crisis on Infinite Earths (1999)
Legion of Super-Heroes (1980)
Legion of Super-Heroes (1984)
Legion of Super-Heroes (1989)
Legion of Super-Heroes (2010)
Legion of Super-Heroes: 1,050 Years in the Future (2008)
Legionnaires (1993)
Legionnaires 3 (1986)
MV Comix (1968)
Secret Origins (1986)
Secrets of the Legion of Super-Heroes (1981)
Star Trek/Legion of Super-Heroes (2011)
Superboy (1949)
Superboy and the Legion of Super-Heroes (1977)
Supergirl (1996)
Supergirl (2005)
Superman (1939)
Superman (1987)
Superman-Batman (1966)
Superman's Pal Jimmy Olsen (1954)
Superman/Batman (2003)
Tales of the Legion (1984)
The Best of DC (1979)
The Brave and the Bold (1955)
The Flash: A Celebration of 75 Years (2015)
The New Adventures of Superboy (1980)
The Super Heroes Monthly (Volume 2) (1981)
The Superman Family (1974)
The Superman Story (1983)
Who's Who in the Legion of Super-Heroes (1988)
Who's Who: The Definitive Directory of the DC Universe (1985)
World's Finest Comics (1941)

Group Affiliation(s):
Legion of Super-Heroes (DC)(Earth-0)

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