Vadym Kuvakin was a competitor in American Ninja Warrior 6. He failed the Warped Wall in qualifying but made it to the finals where he failed Cannonball Alley, but was fast enough to make the Top 15 and go to Vegas. In the finals he performed well, but ultimately ended up failing the Spin Bridge, but was one of the Venice qualifiers that went the farthest.

He then competed in USA vs. The World on Team Europe and he got his revenge on the Spin Bridge, but was too slow to beat USA member Joe Moravsky's time and timed out on the Rope Ladder and he even lost a shoe. He was then set to compete in the Third Stage where he failed the Hang Climbing, however this was enough to win his heat.