History of character has not yet been written.
- This version of the character is exclusive to the continuity of the DC Animated Universe and is an adaptation of Colossal Boy. The original character was created by Jerry Siegel and Jim Mooney and first appeared in Action Comics #267.
- 1 Appearances of Gim Allon (DCAU)
- 2 Images featuring Gim Allon (DCAU)
- Quotations by or about Gim Allon (DCAU)
- Character Gallery: Gim Allon (DCAU)
- Colossal Boy at dccomics.com
- Colossal Boy at Wikipedia.org
- Black Mass at the DC Animated Universe Wiki
Legion of Super-Heroes member