Joel Mattli is a Swiss extreme athlete, and also a speaker who participated in many Ninja Warrior Germany competitions, including the regular Ninja Warrior Germany Seasons 3-8, Team Ninja Warrior Germany 1 & 2 and Ninja Warrior Germany All-Stars 1 & 2. In Ninja Warrior Germany, Mattli is considered as one of the most successful and best competitors, as he reached the Finals in almost every regular season he participated in, and he also reached the Third Stage in Ninja Warrior Germany 5. In addition, Mattli is considered as once of the most talented Ninja athletes in Europe, especially due to his success in Ninja Warrior Austria 3, in which he impressively managed to become the first competitor to achieve Total Victory of the show.
On February 21st, 2023, Joel Mattli achieved the World Record for the most consecutive Flying Bar transitions (in the male category) with 27 transitions.
