Pedro Aguayo Ramírez was a Mexican professional wrestler and promoter who achieved fame in wrestling as Perro Aguayo Jr. or El Hijo del Perro Aguayo. He was the real-life son of lucha libre legend Perro Aguayo and not a storyline "Junior". Aguayo was best known as the leader of the Los Perros del Mal stable, which he started in Consejo Mundial de Lucha Libre (CMLL) in mid-2004. The stable became a significant draw in Mexican professional wrestling, peaking during Aguayo's storyline rivalries with Místico and Héctor Garza. In October 2008, Aguayo left CMLL to start his own independent professional wrestling promotion Perros del Mal Producciones, built around members of his Los Perros del Mal stable. In June 2010, Aguayo returned to AAA after a seven-year absence to start an invasion storyline involving his stable.

Luis Ignacio Urive Alvirde, better known by his ring name Místico, is a Mexican luchador enmascarado, who currently works for Consejo Mundial de Lucha Libre (CMLL), where he is the current NWA World Historic Middleweight Champion, in his first reign. He also makes appearances for partner promotions All Elite Wrestling (AEW) and Major League Wrestling (MLW), where he is the current MLW World Middleweight Champion, in his first reign. Initially working as Místico, he later signed with WWE, where he was known under the name Sin Cara. Upon his return to Mexico, he worked under the name Myzteziz in AAA, before settling on the ring name Carístico upon returning to CMLL in 2015. In 2021, he regained the Místico name, due to his successor and tag team partner Místico II leaving CMLL.