To answer this question quickly and straight to the point, yes, he is. If you are familiar with the famous Japanese game show, you know that people from all over the world go to compete in various, rigorous physical test that usually end up getting destroyed. Not many have ever completed the 4 part obstacle course, but if one American has a good chance, I would give it to Mr. Campbell. In this video, he displays a number of skills that are essential to mastering Ninja Warrior. The only skill left for him that he may need would be luck. Great video, enjoy.