In late 1999, Garza returned to AAA where he became involved in a long-running storyline feud with Heavy Metal, Latin Lover and Perro Aguayo Jr. that would span several years. On December 26, 1999 Héctor Garza defeated Pirata Morgan to win the IWC World Heavyweight Championship, his first championship reign in AAA. 98 days later, Garza lost the championship back to Pirata Morgan. Two months later Garza defeated Sangre Chicana to win the Mexican National Light Heavyweight Championship on a show in his home town of Monterrey.