Johannes "Sintro" Teufl is a R.O.B. main, Austrian Super Smash Bros Ultimate player currently representing Flayn eSports.

Ranked 2nd place on the Austria Power Rankings, Sintro has competed in tournaments such as A1 eSports Game City Major, A1 eSports League Austria Finale, Battle of the Armada, Coca-Cola Breakpoint Ultimate, DATEV Ultimate Series - Prelude 2, EnvySnakes Crew Collab Edition, Pound Online, Smash Contest: DoKomi 2020, SWT: Europe Ultimate Online Qualifier, Syndicate 2019, The Rising Star, The Ultimate Performance 3, Valhalla III, and VCA Vienna Challengers Arena 2019.