The IWRG Relevos Increíbles de Máscaras y Cabelleras (Spanish for "Incredible relays for Masks and Hair") show is a major lucha libre event produced and scripted by Mexican professional wrestling promotion International Wrestling Revolution Group (IWRG), that took place on October 7, 2018 in Arena Naucalpan, Naucalpan, State of Mexico, Mexico.

In Lucha libre the wrestling mask holds a sacred place, with the most anticipated and prestigious matches being those where a wrestler's mask is on the line, a so-called Lucha de Apuestas, or "bet match" where the loser would be forced to unmask in the middle of the ring and state their birth name.

[2] By the same token a wrestler betting his hair in a Lucha de Apuestas is seen as highly prestigious, usually a step below the mask match.

[2] The event featured eight professional wrestling matches with different wrestlers involved in pre-existing scripted feuds, plots and storylines.

Afterward, the two, and El Hijo de Pirata Morgan declared that they collectively would be known as "Los Masters Juniors.