The gladiatorial games were then moved to more permanent structures. These structures are called amphitheaters. The first permanent stone amphitheater was built by Statilius Taurus in 29 BC. Amphitheaters are located around the Empire ranging from Rome, Spain, Gaul, northern Africa and in the Greek east.
Inside of the amphitheater is a cross section of Roman society. The first fourteen rows of the amphitheater are reserved for the members of the upper class and aristocrats of society. There are also sections for the plebs, the common citizens, as well. The higher up the theater you go, the lower in society's class structure you are.
The Cast.
The cast will consist mostly of captured soldiers of foreign nations (where most of the contestants will come from), serious criminals, rebellious slaves and even some people like you, a free citizen. Once a gladiator you will have to take the gladiatorial oath. The oath binds you to "agree to being branded, being chained, being killed by an iron weapon, to pay for the food and drink they received with their blood and to suffer things even if they do not wish too.".
Why would a free citizen want to become a gladiator? Money. As a citizen without a certain trade, career options were very limited. You can either enter the army (where you"ll be treated possibly just as bad as a gladiator), teaching (if you are even literate and willing to fight for your wages) or become a gladiator. As a gladiator at least you"ll be given three meals daily, some medical attention and a roof over your head. Please remember that you will be way too valuable to your lanista for you to be in poor health and not in top condition to fight. Even if you were to die and your lanista would loose your future services, if you were to not even put of a decent fight, your lanista's reputation could be at stake of providing quality gladiators.
Once a gladiator, you"ll be designated as a certain type of gladiators.