Lucha libre is Free wrestling in Spain. So those men are wrestler
Colliseum refers also to guys who fight eachother to death
"Lucha libre (Spanish pronunciation: [ˈlutʃa ˈlibɾe], meaning "free fighting" is a term used in Mexico, and other Spanish-speaking countries, for a form of professional wrestling that has developed within those countries. Although the term nowadays refers exclusively to professional wrestling, it was originally used in the same style as the English term "freestyle wrestling", referring to an amateur wrestling style without the restrictions of Greco-Roman wrestling."