At the inaugural UFC 306 event held on September 14, 2024, WWE Hall of Famer Rey Mysterio made a notable appearance alongside his son, Dominik Mysterio. Mysterio, known for his iconic status in wrestling, gifted UFC President Dana White a custom luchador mask as a gesture of camaraderie, which was celebrated by fans. The event, coinciding with Mexican Independence Day Weekend, drew significant attention from both MMA and WWE audiences, showcasing the merging of the two sports under the TKO Group Holdings banner. The interaction between Mysterio and White was widely appreciated, with fans calling it an 'awesome moment'. Despite their on-screen rivalry, Rey and Dominik were seen sitting separately during the event, reflecting their wrestling storyline. This event highlights the ongoing collaboration between WWE and UFC, particularly following their merger in late 2023.