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.

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.

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.

[5] 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.

[10] On June 16 at Triplemanía XXI, Blue Demon Jr. defeated El Mesías to win the vacant AAA Latin American Championship.