Kevin Klein is an NFL entertainer who had competed three times on American Ninja Warrior. He first competing in American Ninja Warrior 4 in the Midsouth region. In the Qualifying round his run was digested but he finished in the with the 17th fastest time. In the Semi Finals he finished with the 5th fastest time. In Las Vegas he made all the way the Jumping Spider.
Although he didn't compete in American Ninja Warrior 5, Klein returned to American Ninja Warrior 6 and competed in Dallas. He blazed through the Qualifying round with the 2nd fastest time. In the City Finals he put on a strong run, but fell on the Pole Grasper. He placed 8th and had the fastest time for a non finisher. In Las Vegas he had a good run but god stuck on the Warped Wall, he got up on his fifth try but had under 15 seconds left, as the time ran out he rushed through the Spin Bridge and fell on the third ball.
In American Ninja Warrior 7 he competed in Houston. In the Qualifying Round his run was all cut but its is know that he fell on the Swinging Spikes and placed 23rd. In the Semi Finals he got past the Swinging Spikes, and made it all the way to the Walking Bar and placed 11th, making it the second year in a row that he had qualified for Las Vegas. On Stage 1 his run was digested but it showed him clearing with 4 seconds left. On Stage 2, his run was digested again but it showed that he got caught up on Rope Jungle, when one of the ropes got tied around the rope he was on. After so many tries of trying to untie it he ran out of strength to hold on and fell.
In American Ninja Warrior 8 he competed in Oklahoma. His run was digested but it was shown that he was one of many competitors who failed the Log Runner. This is the first time that he didn't go to Las Vegas.
In American Ninja Warrior 9 Kevin cleared San Antonio qualifying, placing 7th overall. However, in the city finals, he failed the Hourglass Drop when he failed to grab the board, leaning towards the landing platform and disqualifying him, a DQ that occurred to many like David Campbell in ANW 7. He did not advance to Vegas for the second year in a row, as he ultimately placed 19th overall.