In other prominent matches, Nueva Generación Dinamita (El Cuatrero, Sansón, and Forastero) defeated Los Vipers (Abismo Negro Jr., Arez, and Psicosis) and El Poder del Norte (Tito Santana, Carta Brava Jr., and Mocho Cota Jr.) in a three-way trios match to become the #1 contenders for the AAA World Trios Championship, FTR (Cash Wheeler and Dax Harwood) defeated Los Lucha Bros (Pentagón Jr. and Fénix) in a Ladder match to retain the AAA World Tag Team Championship, and Cain Velasquez teamed with Psycho Clown and Pagano to defeat L.A. Park and Los Mercenarios (Rey Escorpión and Taurus).

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.

[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".

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.

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.