A title shot was scheduled, and later signed, for Apuesta Letal on May 17, 2019, where BJ retained. Mendoza was then pushed to the background as an underling of a mysterious adviser to the heels simply known as “El Conciliario”, who gave him tasks through Tommy Diablo. On June 15, 2019, Mendoza won the World Heavyweight Championship due to outside intervention. For War in the West 2019, he teamed with Thunder and Lightning in a loss to BJ, Justin Dynamite and Star Roger. The identity of the adviser was revealed to be El Bronco, but his role atop the heel stable was short lived, since Diablo led them in a rebellion. Despite being reduced to a secondary role and being hounded by an unknown masked assailant, Mendoza scored successful defenses over Roger (twice, in regular and iron man matches) and Justin Dynamite. At Insurrection, he lost the title against a returning Fashion (revealed to have been the mysterious figure), failing to recapture it at La Revancha. On November 15, 2019, Mendoza closed the year with a win over Navarro at Guerra de Poder, since Black Xmas was later cancelled.
