Nick Kostner is a motorcycle mechanic who competed in American Ninja Warrior 4. He cleared the Midwest qualifiers and placed 7th, but failed the Lamp Grasper in the Midwest semifinals, placing 14th. Nick would be digested in the national finals, but was shown to have timed up while climbing the Rope Ladder, looking disappointed that he could not clear Stage One within the time limit. It's rumored he returned in season 6 and failed the Rope Swing into Cargo Net. This cannot be confirmed entirely.