Debuting in 2013's season five, Jessie Graff is one of American Ninja Warrior's biggest stars, being the first woman to attempt a city finals course, the second woman to qualify for the national finals, the first woman to clear stage one of the final course, the first woman to clear stage two of the final course, and the highest ranking ever of any woman in a city final, among many other achievements. She is also the first woman ever to clear the second stage and attempt the third stage on the original Japanese Sasuke course.

Despite all of these accomplishments, American Ninja Warrior is probably not where most people in the world have seen Jessie Graff, even if they don't actually know they were seeing her. Graff's day job is as a stuntwoman, and as she explains on her homepage, she has worked on a number of incredibly well-known projects, including Supergirl, Wonder Woman, Transformers, The Dark Knight, and Agents of SHIELD, among others. Her many projects in the superhero genre have been reflected in her tendency to wear superhero-themed costumes while running the ANW course. Her work on Wonder Woman 1984 caused her to have to miss running the national finals course in season 10, but she returned for season 11, again qualifying for the national finals. Additionally, Graff has black belts in Taekwondo and Kung Fu, as well as degrees in theater, and — yes, you guessed it — aerospace engineering.