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Colossal Boy (Pre-Zero Hour)
LSH-ColossalBoy-GimAllon-Cockrum
Pre-Zero Hour
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Characteristics
Real name Gim Allon
Alias Colossal Boy
Occupation Legionnaire
Alignment Good
Family Marte Allon (mother); Wynn Allon (father); Yera Allon (spouse); Rogir Allon (cousin)
Affiliation Legion of Super-Heroes (Pre-Zero Hour); Legion Academy (Pre-Zero Hour)
Homeworld Earth
First appearance Action Comics vol 1 #267 (Aug 1960)
Universe Pre-Zero Hour
Alternate versions see Colossal Boy (disambiguation)
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History[]

For Gim Allon, growing up took on a new meaning after a fateful encounter with a strange meteor when vacationing on Mars. Discovering he had the ability to grow to enormous size, he joined the Legion of Super-Heroes at the same time as Chameleon Boy and Invisible Kid. As Colossal Boy, Gim spent a lot of time tackling giant beasts, computers and robots.

Gim's most dramatic involvement came when his parents were turned to glass. Gim was blackmailed into pretending to be losing his edge, in order to retrain at Legion Academy and smuggle out their training plans. Found out, he was expelled from the Legion. Forced to flee, he took up a training post with the Legion of Super-Villains academy, in order to protect his vitrified parents. The Legion traced him via his mother’s lifeforce jewel, but he had to reveal the Legion spies to protect his parents. It was only the shock of (apparently) seeing Superboy turned to glass that caused him to rebel, so helping the Legion capture some super-powered felons.

Later, his mother entered politics and, in due course, became President of Earth. This semed to put pressure on Gim, although his mother's relationship with the Legion was mostly good.

It seemed that, secretly, Gim had a fondness for fellow Legionnaire, Shrinking Violet, but his feelings grew stronger unexpectedly at one point, and he even fought with her boyfriend, Duplicate Boy. Oddly, it turned out that he had in fact fallen in love with a Durlan imposter, Yera, who had taken Violet's place when she'd been kidnapped by Imskian rebels. When the deception was finally discovered, Yera was exonerated from blame, and Gim continued to love her. She reciprocated his feelings and they got married.

Classic period (Adventure Comics/Action Comics)[]

70s/80s (Superboy & the LSH/LSH vol 2)[]

Animated gif[]

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