Isaac Caldiero

Isaac Caldiero, born 2 March 1982, is an American rock climber, carpenter and obstacle-course competitor who became the first official winner of American Ninja Warrior. He competed on the series in seasons five, six, seven and ten. In season seven he completed all four stages of the National Finals course and, finishing the Stage 4 rope climb faster than Geoff Britten, who had also completed it, took the title and the 1,000,000 dollar prize, a result some fans and competitors debated because Britten had run first. As a climber he began at 15 and took up bouldering at 17, specializes in highball bouldering, and has made V14 first ascents and 5.14 free solos, including a ropeless climb of The Present in southern Utah. He stepped away from the show in season eight to act as a spokesman, returned for season ten but fell early in the Indianapolis city finals, and now helps develop ninja gyms while living in Chattanooga, Tennessee.