From Wikipedia:

Gladiator is a fictional character that appears in comic books published by Marvel Comics. The character first appeared in X-Men vol. 1, #107 (October 1977) and was created by Chris Claremont and Dave Cockrum.

Gladiator is the Praetor (leader) of the elite corps of the Shi'ar Imperial Guard — an army of powerful beings that enforce Shi'ar Imperial law on all planets within the Shi'ar Galaxy. The elite corps also protects and carries out the personal directives of the majestor or majestrix (emperor or empress) of the Shi’ar Empire.

For Gladiator Sculpts, see:

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