Fielder's career began with stand-up comedy, where he quickly gained a reputation for his offbeat humor and unapologetic irreverence. He soon transitioned to television, creating and starring in his own show, Nathan for You, which premiered in 2013 and ran for four seasons. The show was a massive hit, with Fielder using his boosted confidence to help struggling businesses, often with disastrous and hilarious results.
On Nathan for You, Fielder would infiltrate various businesses, from funeral homes to fast-food joints, and implement his own unorthodox strategies to boost sales and customer engagement. The results were often cringe-worthy and sidesplitting, making for some of the most uncomfortable yet mesmerizing TV you'll ever watch. With his deadpan delivery and Complete lack of self-awareness, Fielder became an unlikely hero of anti-comedy.