Mack Roesch is very prominent in Obstacle Course competitions and has participated in Spartan Race competitions, as well as in television shows such as "American Ninja Warrior" and in the third season of "Exatlón Estados Unidos", in which he made history by become the first 100% American participant with no Latino roots.

Although it is a bit difficult for him to speak Spanish, he is very appreciative of Latin culture and always tries to connect. During his previous participation in the competition he managed to have the best winning percentage for most of the season, earning him the nickname "The Machine."

Many fans believed that he would be the champion, but unfortunately the mental exhaustion generated by the competition caused him to lower his performance.

Mack was defeated and eliminated in the semifinal by Alberto "El Venado" Medina , who eventually became champion. "The Machine" has outstanding accounts and wants to finish what he started.