Background

2021 marked the 29th year that the Mexican professional wrestling company Lucha Libre AAA Worldwide (Triple A or AAA) has held their annual flagship Triplemanía show. Triplemanía Regia II was the 36th overall Triplemanía show promoted by AAA (AAA promoted multiple Triplemanía shows over the summers of 1994 to 1997). Since the 2012 event, Triplemanía has taken place at the Arena Ciudad de México (Mexico City Arena), an indoor arena in Azcapotzalco, Mexico City, Mexico that has a maximum capacity of 22,300 spectators.^[3][4][5][6] Triplemanía Regia II was the first Triplemanía event held outside of Arena Ciudad de México during the 2020s and the second outside Mexico City since 2007.

Triplemanía is the company's biggest show of the year, the AAA equivalent of WWE's WrestleMania or New Japan Pro-Wrestling's Wrestle Kingdom event.

Storylines

Triplemanía Regia II featured eight professional wrestling matches, with different wrestlers involved in pre-existing scripted feuds, plots and storylines. Wrestlers portrayed either heels (referred to as rudos in Mexico, those that portray the "bad guys") or faces (técnicos in Mexico, the "good guy" characters) as they engaged in a series of tension-building events, which culminated in a wrestling match.^[7][8]

On August 14, 2021, at Triplemanía XXIX, All Elite Wrestling's Kenny Omega successfully defended the AAA Mega Championship against Andrade "El Ídolo".^[9] Following the match, Omega declared that he intended to next defend the Mega Championship against Hijo del Vikingo. On October 18, AAA announced that Omega would face Vikingo at Triplemanía Regia II.^[10] On November 18, it was reported by the Wrestling Observer Newsletter that Omega would not participate in the event due to undergoing multiple surgeries.^[11] The reports were confirmed by AAA on November 22, with the promotion canceling Omega's defense and vacating the Mega Championship.^[12] Later that day, AAA posted a graphic on Instagram announcing that a new champion would be determined in a five-way match at the event. The participants in the match were later revealed to be Vikingo, Samuray del Sol, Jay Lethal, Bobby Fish, and Bandido.

Cain Velasquez made his professional wrestling debut on August 3, 2019, at Triplemanía XXVII, in a trios match, teaming with Cody Rhodes and Psycho Clown to defeat Texano Jr, Taurus, and Killer Kross.^[13] Velasquez competed in a second AAA match at Lucha Invades NY, where he teamed with Brian Cage and Psycho Clown to defeat Rey Escorpión, Texano Jr., and Taurus.^[14] Following the match, Velasquez departed AAA and signed with WWE – Velasquez was released from his WWE contract in April 2020 due to budget cuts resulting from the COVID-19 pandemic.^[15] In October 2021, AAA began airing videos teasing Velasquez's return to the promotion. On October 18, AAA announced that Velasquez would team with Psycho Clown and Pagano to face Los Mercenarios (Rey Escorpión and Taurus) and a mystery partner at Triplemanía Regia.^[10] The partner was later revealed to be L.A. Park.^[16]