For the proconsul of the same name and planet, see Claudius Marcus.

Claudius Marcus was deemed the "heavyweight champion" gladiator on 892-IV in 2268. For this, he appeared on the magazine cover of The Gallian.

In the same year, he killed the last surviving crewmember of the SS Beagle, William B. Harrison, in a fight broadcast on Empire TV. (TOS: "Bread and Circuses")

Claudius Marcus was played by an unknown actor.