BeforeRyan Guzman was saving lives as firefighter Eddie Diaz on 9-1-1, he was shaking up the dance floor in the Step Upfranchise. Guzman played the role of the rugged dance troupe ringleader, Sean Asa, in the Step Up Revolution (2014), the fourth installment of the popular dance films. The actor was joined by So You Think You Can Dance alum, Kathryn McCormick, as the leading lady.