Raymundo Cuesta made his professional wrestling debut in 1968, using the ring name Ray Acosta, and generally working low card matches while gaining experience.

[2] In the early 1970s Cuesta adopted a new ring persona, an enmascarado (masked wrestler) character called El Estudiante (Spanish for "the Student").

Cuesta had a black and orange mask created that would become his trademark for many years, he wore martial artist pants and jackets and started to incorporate various kicks and chops into his wrestling style.

Los Tres Fantásticos became the first ever UWA World Trios Championship on March 18, 1984 when they defeated Solar, Super Astro and Ultraman in the finals of a tournament to crown the first champions, during a time period where the UWA shows in El Toreo were the biggest drawing shows in Mexico.

[1][6] Kung Fu, Kato and Black Man lost the UWA Trios title at some point in 1984.

[6] In 1984/85 EMLL and the UWA ran a series of joint shows, sharing wrestlers between the two promotions, including Los Tres Fantásticos.

After an initial push as a rudo Kung Fu started to sink in the ranks, being used more and more to help young wrestlers gain experience and make them look good.

Kung Fu remained with EMLL (by then renamed Consejo Mundial de Lucha Libre (CMLL)) until 1994, where he began working on the independent circuit.