Gladiators were slaves, criminals, or war captives who were trained to fight in combat sports for entertainment in the Roman Colosseum. There were many different types of gladiators categorized by their armor, weapons, and fighting styles - from lightly armored fighters using swords and spears to heavily armored fighters battling on foot or horseback. Gladiators trained rigorously at schools like the Ludus Magnus for their specific roles and had varying levels of prestige, with some even achieving fame and freedom from their victories in the arena.