Matthew Derouen is a Electronic Technician, rock climber and professional Dodgeball player from St. Louis, MO. His first season competing was American Ninja Warrior 4, and he posted up the second fastest time (1:11.94) in the 2012 Midwest region, and in the finals, he posted the fastest time (2:25.28) and locked himself a spot in Vegas. In the Las Vegas Finals, his number was 96, so his expectations were high, but he shockingly tripped up on the 3rd step of the Step Slider and ended up failing there, stunning many.
He returned back in American Ninja Warrior 5, where he competed in Denver. There, he was one of the Top 48 to clear the course. In the Denver Finals, he failed the Salmon Ladder. In American Ninja Warrior 6, he was a tester for the course in St. Louis. He didn't compete in any future seasons.