Gladiator (Kallark)
Fictional character
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Gladiator (Kallark) is a fictional character appearing in American comic books published by Marvel Comics. He first appeared in The X-Men #107 and was created by writer Chris Claremont and artist Dave Cockrum. Wikipedia
Creators: Chris Claremont and Dave Cockrum
Notable aliases: Captain Universe, Cal Kramer, Gladiator, and Kallark
Alter ego: Kallark
First appearance: The X-Men #107 (Oct. 1977)
Species: Strontian
Team affiliations: Imperial Guard; Annihilators; Dark Guardians; Guardians of the Galaxy