S1, also known as S1-14, is a Dutch Super Smash Bros. Ultimate Ness main who is considered one of the best Ness players in Europe. He is ranked 3rd on the Dutch Power Rankings and 6th on the European Smash Rankings.
In Super Smash Bros. for Wii U, S1 was a Ness main with a strong Cloud secondary who is also considered the best Ness in Europe. He has notable wins over European smashers such as Light, quiK, iStudying, Mr.R, Glutonny, Space, Griffith, and many more. He is currently ranked 3rd on the Dutch Smash 4 Power Rankings and 5th on the European Smash 4 Power Rankings.