Lucha Libre AAA Worldwide (1996–2001)

In Lucha Libre AAA Worldwide (AAA) he formed the team Los Juniors with La Parka Jr., Mascara Sagrada Jr. and Perro Aguayo Jr. On April 18, 1999, in Zapopan, Jalisco they won the Mexican National Atómicos Championship by defeating Los Vatos Locos, a team of Charly Manson, May Flowers, Nygma and Picudo. On September 17, 1999, in Mexico City, D.F. they lost the championship to Los Vipers, a team of Histeria, Maniaco, Mosco de la Merced II and Psicosis II.

National Wrestling Alliance (2008–2010)

On October 25, 2008, Demon Jr. became the first Mexican professional wrestler, as well as first masked luchador to win the NWA World Heavyweight Championship when he defeated champion Adam Pearce. His win was also the first time the title changed hands in Mexico, although not with CMLL as would have been the case before the mid-1980s (It happened in Blue Demon Jr.'s own promotion: NWA Mexico). Pearce protested the loss with the NWA as his arm was under the bottom rope when he passed out from Blue Demon Jr's Single leg Boston crab. Blue Demon Jr. managed to hold on to the championship for 505 days before dropping it back to Pearce in a triple-threat match also involving Phill Shatter on March 14, 2010, at NWA New Beginnings.^[3]

Pro Wrestling Revolution (2010–2013)

Demon Jr. defeated Oliver John at an NWA Mexico event at the Lucha Libre Expo in Mexico City on July 23, 2010, to capture the Pro Wrestling Revolution (PWR) Heavyweight Championship. On May 11, 2013, El Hijo del Santo and his rival, Blue Demon Jr., joined forces to win the Pro Wrestling Revolution Tag Team Championship after defeating Brian Cage and Derek Sanders^[4] On September 6, 2012, Blue Demon Jr. lost the PWR World Heavyweight Championship to Carly Colón in a match that also involved La Parka II. On November 13, 2013, Blue Demon Jr. disbanded NWA Mexico and became officially affiliated with PWR.^[5]

Lucha Underground (2014–2015)

In August 2014, Blue Demon Jr. was announced as one of five AAA wrestlers to star in the El Rey network's new television series Lucha Underground.^[6] Blue Demon Jr. wrestled in the first match of the debut episode of Lucha Underground on October 29, defeating Chavo Guerrero Jr.^[7]

In the LU storyline, Blue Demon Jr. was hospitalized due to vicious after-match attacks by both Mil Muertes and Chavo Guerrero Jr. following Demon's loss to Mil Muertes in the November 5 main event match. Upon his return, he attacked Chavo and later in a face-to-face meeting with Chavo blocked another attack and emerged triumphant after laying Chavo out. On July 8, 2015, Demon turned rudo attacking Texano Jr.

Return to AAA (2013–present)

Blue Demon Jr. returned to AAA on March 3, 2013, challenging El Texano Jr. to a match for the AAA Mega Championship.^[8] The match took place on March 17 at Rey de Reyes and saw El Texano Jr. retain his title. After the match, Blue Demon Jr. challenged El Texano Jr. to a Mask vs. Hair Lucha de Apuestas.^[9] On April 15, Blue Demon Jr. announced that he had signed to become a regular member of AAA's roster.^[10] On June 16 at Triplemanía XXI, Blue Demon Jr. defeated El Mesías to win the vacant AAA Latin American Championship.^[11] He was stripped of the title on March 16, 2014, after he was unable to attend a scheduled title defense against Chessman at Rey de Reyes.^[12]