Llanes is credited with innovating the La Cerrajera (Modified abdominal stretch) submission hold.

Enrique Juan Yañez González was born on August 24, 1919, in Otumba, a Mexico State municipality with a current population of about 8,000.

He formed a very successful tag team with his mentor Tarzán López that main evented many shows throughout the 1940s.

[1] In December, 1940 Llanes defeated Cavernario Galindo to win the Mexican National Light Heavyweight Championship.

[2] On September 24, 1951, Llanes defeated Sugi Sito to win the NWA World Middleweight Championship.