Spencer Johnson is a gymnastics instructor from Iowa.
American Ninja Warrior 9[]
Spencer first competed in Kansas City in American Ninja Warrior 9. His qualifying run was cut, but he failed Crank It Up and placed 30th in the top 30, barely securing a spot in the city finals.
His run in the city finals was digested, but it was shown that he failed the Salmon Ladder, Spencer placed 11th overall and moved on to the national finals. His run on Stage One was also digested but it was shown that, similar to Crank It Up in Kansas City qualifying, he struggled on the Flying Squirrel and timed out there after getting tangled up in the cargo net.
American Ninja Warrior 17[]
After a seven year hiatus, Spencer returned to compete in the third qualifying episode in a full run. There he got revenge on Crank It Up before he failed on the following obstacle V Formation. He placed 12th overall and once again advanced to the semifinals.
He later competed in the last semifinals episode, being shown as the first runner of the episode. There he got revenge on V Formation and again on the Salmon Ladder before he ended up falling on The Dungeon. He placed 14th overall, once again advancing to the national finals.