José Casas Ruiz (born January 10, 1960) is a Mexican professional wrestler (called a Luchador in Spanish) and trainer currently working for Consejo Mundial de Lucha Libre (CMLL) under the ring name Negro Casas. He is the son of former wrestler, turned referee Pepe Casas and brother of professeional wrestlers El Felino and Heavy Metal. Casas has trained several wrestlers, including Mephisto, Kazushige Nosawa, T.J. Perkins, Rocky Romero, and Ricky Marvin.

Casas has worked all over the world, making appearances for the World Wrestling Federation (WWF) in the United States of America as well as touring with New Japan Pro Wrestling (NJPW) in Japan for over a decade. In Mexico Casas has worked for CMLL since the 1990s but has also wrestled for the Universal Wrestling Association (UWA), World Wrestling Association (WWA) and International Wrestling Revolution Group (IWRG). In 2008 Negro Casas joined with Mr. Niebla and Heavy Metal to form the group La Peste Negra (Spanish for "the Black Plague), a group that would later be joined by El Felino. He currently holds the NWA World Historic Welterweight Championship.

Jorge Guzmán Rodríguez (born August 2, 1963), better known as El Hijo del Santo ("The Son of the Saint"), is a Mexican professional wrestler, political activist and one of the most successful stars in Lucha Libre. He is the youngest son of the legendary professional wrestler, film actor and Mexican folk hero El Santo.

"Santito", as he is often called, was the only one of his father's 10 children to become a professional wrestler. He began wrestling without his father's consent in February 1982 as "El Korak" but he made his official debut as "El Hijo del Santo" in October of that year after he earned his college degree in Communication Science per his father's request. He shared his father's look, the silver mask, tights and cape, and moves but he was shorter and, although he would never become the same cultural icon, he would become a better in-ring performer than his father.

Early in his career, he was wrestled mainly for World Wrestling Association (WWA) (The Tijuana circuit) and Universal Wrestling Association (UWA) (a promotion that worked in the Mexico City area) but he did make his debut for Empressa Mexicana de Lucha Libre (EMLL) the promotion that later became Consejo Mundial de Lucha Libre (CMLL) in Arena Mexico in the summer of 1983. He also was voted "Rookie of the Year" in Mexico.