Luis Ignascio Urive Alvirde (born December 22, 1982) is a Mexican luchador enmascarado, or masked professional wrestler, currently signed to WWE, working on its SmackDown brand under the name Sin Cara (Spanish for "Faceless"). He is best known for his time in the lucha libre promotion Consejo Mundial de Lucha Libre (CMLL) under the ringname Místico, where since 2006 he was the main técnico (face/storyline hero) in CMLL and the biggest box office draw in all of Mexico. Místico is Spanish for "Mystic", a religious ring character who is the storyline protégé of the wrestling priest Fray Tormenta. Upon signing with WWE in January 2011, Urive was repackaged as Sin Cara.

Urive is the son of Manuel Almanza, who wrestled under the ring name "Dr. Karonte", the brother of wrestlers Astro Boy, Argos, Argenis and an unspecified member of Los Mini Psycho Circus, the cousin of wrestler Magnus and the nephew of CMLL booker Tony Salazar.

Urive was trained for his professional wrestling debut by his father and his uncle Tony Salazar who is a retired wrestler that works as a booker for Consejo Mundial de Lucha Libre, Mexico's oldest and largest wrestling promotion. Místico made his debut on April 30, 1998 working as "Dr. Karonte, Jr." at the age of 15. In 2000 he changed his ring name to "Astro Boy" in honor of his older brother who had died months earlier, who had worked as the original Astro Boy. Later on he was joined by another brother who worked as "Astro Boy II" to form a tag team. In 2003 Místico travelled to Japan to work for Michinoku Pro where he was billed as "Komachi", a ring persona he took over from fellow luchador Volador, Jr. who had played the part for about a year.

Rey Gutierrez Mysterio Jr. (born December 11, 1974) is a Mexican American professional wrestler in World Wrestling Entertainment currently wrestling on the RAW Brand. In WWE, Gutierrez was trained by his uncle Rey Misterio, Sr. and wrestled early on in Mexico where he learned the Lucha Libre high flying style that has been his trademark.

Gutierrez originally worked for Asistencia Asesoría y Administración (AAA) in Mexico, from 1992 to 1995. He wrestled in Extreme Championship Wrestling (ECW) from 1995 to 1996 and World Championship Wrestling (WCW) from 1996 to 2001, as Rey Misterio, Jr./Rey Mysterio, Jr. but dropped the "Junior" from his name when he began working for WWE in 2002.

Mysterio is known for having a high flying style, which helped kick-start the cruiserweight wrestling revolution in the United States in the late 1990s during his time in WCW. In WCW he won the WCW World Tag Team Championship three times, and the WCW Cruiserweight Tag Team Championship once with Billy Kidman as part of the Filthy Animals. In WWE, Mysterio is a three time world champion having held the World Heavyweight Championship twice, the WWE Championship once and is currently listed as the lightest world champion in WWE history. He has also held the WWE Tag Team Championship a record-tying four times, and the WWE Intercontinental Championship twice. He also held the WCW/WWE Cruiserweight Championship a record eight times (five times in WCW, three in WWE). All totaled, he has won 21 titles between WWE and WCW. Mysterio was the 21st person to win the WWE Triple Crown Championship, and was the winner of the 2006 Royal Rumble.