AEW x NJPW Present Forbidden Door 2023: Zero Hour was an event featuring a collaboration between All Elite Wrestling (AEW) and New Japan Pro-Wrestling (NJPW). It served as a pre-show for the larger "AEW x NJPW Forbidden Door 2023" event. The pre-show included several matches featuring wrestlers from both promotions: Athena vs. Billie Starkz - This match is part of the women's Owen Hart Foundation Memorial Cup Tournament Stu Grayson vs. El Phantasmo Mogul Embassy (Swerve Strickland, Bishop Kaun, & Toa Liona) vs. CHAOS (Rocky Romero, Trent, & El Desperado) United Empire (Jeff Cobb, Kyle Fletcher, & TJP) vs. Los Ingobernables de Japon (Hiromu Takahashi, Shingo Takagi, & BUSHI)