In February 2021, WWE announced that they had signed Rechsteiner to a contract.[10] Later that month, he was assigned to the WWE Performance Center in Orlando, Florida for training.[6][11] At the WrestleMania Backlash pay-per-view on May 16, 2021, Rechsteiner and several other wrestlers portrayed "zombies" in a lumberjack match between Damian Priest and The Miz.[12] Rechsteiner wrestled his first match for WWE on the September 14 episode of WWE NXT under the ring name "Bron Breakker", defeating LA Knight;[2][13] he later had a staredown with new NXT Champion Tommaso Ciampa.[14]