Mil Máscaras is a Mexican luchador and actor. He is regarded as one of the greatest wrestlers of the lucha libre tradition in Mexico – along with El Santo and Blue Demon – and has been described as the first international superstar of lucha libre. Mil Máscaras is considered one of the most influential wrestlers of all time for enhancing and popularizing the lucha libre style around the world, both in the ring and as the star of 20 films. He is also an accomplished artist and cultural ambassador for his native country and has appeared on three of its postage stamps. Although he has never been unmasked and his true identity is generally kept a secret out of respect for lucha libre traditions, his real name is known due to appearing in the credits of the films he has starred in. His ring name is Spanish for "Thousand Masks".

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.