José Luis Rodríguez Arellano is a Mexican Luchador Enmascarado who wrestles under the ring name Dos Caras. His most active years were in the 1970s and 1980s, and he achieved his greatest success in Mexico's Universal Wrestling Alliance (UWA), where he won the UWA World Heavyweight Championship three times. He has been called "the greatest heavyweight ever to come out of Mexico". He is the creator of the Dos Caras Clutch, a hammerlock head scissors pinning combination.

Sergio Emilio Charles Garduño was a Mexican luchador, who is best known under the ring name Emilio Charles Jr. Over the years, Charles worked for all of the major Mexican professional wrestling promotions, including Consejo Mundial de Lucha Libre (CMLL), Asistencia Asesoría y Administración and International Wrestling Revolution Group.