Penta made his entrance to a hyped crowd inside the SAP Center in San Jose, California, and he emerged from the darkness with his signature "Cero Miedo" signature mark. He soaked it all in as he made his way to the ring and the crowd cheered him on.

Pentagon Jr., known as Penta El Zero M, debuted in WWE on January 13, 2025, during SmackDown, aligning with Rey Mysterio against Dominik Mysterio and The Judgment Day. Penta's segment ran five minutes over time due to its significance,

WWE Shop has released merchandise for Penta, FKA Penta El Zero Miedo/Pentagon Jr. While vignettes promoting his eventual arrival in the company have aired on WWE programming for

WWE Superstar Dominik Mysterio has an idea for former AEW star Penta El Zero Miedo's next matchup following RAW. On the January 13th edition of WWE RAW, fans witnessed the highly anticipated debut of Penta El Zero Miedo.