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,

Penta is being billed as WWE's newest "dark luchador," one that has no fear of any person or thing and is driven to be as aggressive as he can in order to accomplish his goals. The creative blurb with Penta's replica mask also touts how he will dive onto and dominate any person who dares to stand in his way.