The CMLL World Lightweight Championship is a professional wrestling world championship promoted by the Consejo Mundial de Lucha Libre (CMLL), a Mexican Lucha Libre wrestling promotion (franchise). Originally, CMLL promoted the "Super Lightweight" division as part of their expansion into Japan in 1999 and 2000 and later reintroduced the division in 2003, at the same time they were running a CMLL World Super Lightweight Championship in Mexico. During Máscara Dorada's reign between 2009 and 2011, the name was changed to the CMLL Lightweight Championship, adjusting the weight limit.

John Raymond Rivera, better known by his ring name Rocky Romero, is a Cuban-American professional wrestler currently signed to New Japan Pro-Wrestling (NJPW) and All Elite Wrestling (AEW), where is a Vice President in both promotions. He is a member of Chaos. He also makes appearances for Consejo Mundial de Lucha Libre (CMLL), and Major League Wrestling. Also known by his nickname "Azúcar ", he is best known for his accomplishments as a tag team wrestler. He was member of tag teams like The Havana Pitbulls/Los Cubanitos, Forever Hooligans, and Roppongi Vice. His tenure as the fourth incarnation of Black Tiger was also met with praise and recognition.