Héroes Inmortales
Before his WWE career, Alcantar worked as El Hijo del Fantasma for Lucha Libre AAA Worldwide (AAA) from 2013 to 2019. In AAA, he won the AAA Fusión Championship, the AAA Latin American Championship, the 2017 "Copa Antonio Peña", and is the longest-reigning AAA World Cruiserweight Champion in history. He previously worked for Consejo Mundial de Lucha Libre (CMLL) from 2008 to 2013. In CMLL, he held the CMLL World Middleweight Championship, as well as the CMLL World Trios Championship twice (with Héctor Garza and La Máscara).