The first figure up is my favorite. Romans loved the foreign and exotic. Amongst the hundreds of thousands of prisoners in the Empire, there were bound to be tattooed Celts. I'm certain the crowd would have gone mad seeing a tattooed gladiator in the area.
Laquerarius: Little is known about this gladiator type except that he was equipped with a lasso and spear. They appeared late in the gladiator games and there is speculation that the use of the lasso was reflective of a barbarian tribe that used the lasso in combat. Perhaps he was the prototype cowboy! We'll call him "The Gladiator with No Name" and exit with Ennio Morricone's theme from "The Good, the Bad and the Ugly."