Nathan Ryles is a personal trainer and business owner from Adelaide, Australia. He can be recognised for his appearance as a contestant in Australian Ninja Warrior is a sports entertainment competition spin-off of the Japanese television series Sasuke.

At just 27-years-old, Ryles wowed the crowds with some incredible runs in the second, third and fourth seasons of the show. In the first four seasons of the show, viewers were able to see Ryles’s toned physique get to the Grand Finals twice. For this gutsy cancer survivor, tackling the Ninja Warrior course represents another challenge that Nathan Ryles had his sights on defeating. Ryles is an example of how coming out of one life-changing period even stronger. At 19 Ryles was diagnosed with cancer. The treatment caused Nathan to lose 30kg. Determined to find the positives, Nathan found that his battle inspired him to hit the gym and strengthen his body. Ryles is also a semi-professional AFL player, this personal trainer also plays basketball and netball.

Since the show, the star has released his own gym clothing company called Ryderwear, with his Fiance and amassed 220,000 followers on TikTok where he shares fitness and exercise tips to his followers. In the next year, Ryles is set to expand his social media following and aims to grow his television appearances.