Karson Voiles is a ninja gym owner from West Haven, Utah. He owns Ninja Warehouse, which has local locations in Ogden and Salt Lake City respectively.
American Ninja Warrior 5
American Ninja Warrior 6
Karson returned for American Ninja Warrior 6 he competed in Denver and completed the course in 2:00.36. In the city finals, he made it all the way to the Doorknob Arch and placed 9th, which was good enough for Las Vegas. There his run was digested but it showed that he got a bad bounce off the mini trampoline and couldn't stick into the Jumping Spider and fell.
American Ninja Warrior 7
He then returned to American Ninja Warrior 7 and competed in Kansas City. His qualifying run was all cut, but he cleared the course in 2:18.28. In the city finals, his run was digested but it showed him falling on the new modified Body Prop. But he ended up placing 11th and for the second year in a row, made it to Las Vegas. There, his run was digested but it showed that he got revenge on the Jumping Spider and cleared Stage 1.
On Stage 2 his run was digested again but it showed him falling on Roulette Row when he got a bad bounce off of the mini Trampoline and couldn't grab the first cycle.
Karson competed on the first season of Team Ninja Warrior where he was captain of team Karsonic Boom. Voiles, along with teammates Brandon Barrett and Beth Higginbotham competed during the fourth episode along with the teams, the Think Tank, The Wild Bunch and finalist Team Ronin.
In American Ninja Warrior 8 he was not invited back to compete despite his success in the previous season.
American Ninja Warrior 9
In American Ninja Warrior 9 he returned in Denver qualifying, although his run was all cut it was shown he fell on the new and difficult Rail Runner which was good enough for him to advance to the city finals. In the finals, his run was digested but it was shown he failed The Wedge. He placed 4th overall (the fastest to that point) and earned his third trip to the national finals.
In Vegas, his run was digested again but it was shown he cleared Stage 1 with 13.90 seconds left and moved on to Stage 2. In Stage 2, he was digested again but it was shown that he failed Wingnut Alley.
American Ninja Warrior 10
In American Ninja Warrior 10 he returned to compete in Minneapolis. His qualifying run was once again all cut, but it was shown that he once again failed the fifth obstacle, this time being the Battering Ram, but his time was still good enough to place 19th overall.
In the city finals, his run was digested but it was shown that he failed Iron Maiden but placed 8th overall and moved on to Vegas.
On Stage 1, Voiles had a noble run running for his wife, who suffered from a tumour. He rose to the occasion, conquering ninja killer obstacles like the Double Dipper and finishing the stage 1 course with 19.78 seconds left to spare. He became the first veteran in stage 1 to finish and the second to finish the course altogether.
His run on Stage 2 was digested but it was shown that he failed Wingnut Alley for the second year in a row. This became his third year making it to the fifth obstacle of stage 2. He had failed in the exact same spot he did the year before.
American Ninja Warrior 11
He competed in Tacoma this season. Although his run was digested, he completed the fifth obstacle, the Lightning Bolts, but was unable to scale the Mega Wall. He still advanced to the city finals by placing 15th overall.
In the city finals, Karson put up a great run, managing to clear the Lightning Bolts where it took out many competitors and being the first to clear the Floating Monkey Bars and becoming the first to attempt Northwest Passage (a variation of the Iron Maiden which he failed last year) where he fell. Due to the number of falls on the Lightning Bolts and Floating Monkey Bars, Karson placed 2nd and advanced to Vegas for the fifth time and qualified for the Power Tower. On the Power Tower, Karson gained the upper edge and manage to win the Safety Pass. In Vegas, his run was digested, but he cleared stage 1 for the 3rd year in a row without the need of his safety pass.
On stage 1, he cleared the course with 5.52 seconds left. Since he cleared it on his first try, he conserved his Safety Pass for the next round, being one of four Safety Pass winners to do so. However, on Stage 2, his first try was over on Snap Back, however, on his second attempt, he cleared and advanced to Stage 3. His 3rd stage run was digested, but it was shown he failed Cane Lane by not having anything in the tank.
|6||17||Failed Jumping Spider (First Stage)||Digest.|
|7||23||Failed Roulette Row (Second Stage)||Digest. Failed jump to first hoop|
|9||32||Failed Wingnut Alley (Second Stage)||Digest. Transition to the second wingnut|
|10||15||Failed Wingnut Alley (Second Stage)||Digest.|
|11||Failed Cane Lane (Third Stage)||Digest.|