Casas played football, soccer, volleyball and baseball while still in school and even started training in professional wrestling classes taught by his father and Raúl Reyes.

By 1984 Casas had begun working for Universal Wrestling Association, winning the UWA World Lightweight Championship from Black Terry on January 1, 1984.

The storyline included Hijo del Santo forcing Negro Casas to be shaved bald after losing a Luchas de Apuestas, or bet match.

Promoter Paco Alonso even entered the ring and asked the crowd to show their appreciation for the match they just saw, earning both Negro Casas and Fuerza Guerrera a regular job with Empresa Mexicana de Lucha Libre (EMLL).

On December 1, 1995, Negro Casas defeated longtime rival Hijo del Santo in the finals of a tournament to crown a new NWA World Welterweight Championship.

[11] The team reigned for over 400 days, until El Hijo del Santo left CMLL; forcing Negro Casas to vacate the title.

When El Hijo del Santo returned in 2001 the duo picked up where they left off by defeating Último Guerrero and Rey Bucanero to win the tag team championship once again.

Following the loss of the tag team title Negro Casas began focusing on his singles career once again, winning the CMLL World Middleweight Championship from Emilio Charles Jr. on April 26, 2004.

[8] Casas and Místico lost the tag team titles to Último Guerrero and Dr. Wagner Jr. on July 13, 2007 but quickly regained them a week later.

[15] On November 11, 2007, Negro Casas won the IWRG Intercontinental Middleweight Championship by defeating Villano III in the finals of a tournament to find a new champion.

The trio started wearing large afro wigs, painting their faces black and dancing during their entrances and generally worked a less serious style of match than was unusual, especially for a serious wrestler like Negro Casas.

[17] La Pesta Negra's biggest triumph to date is Negro Casas' title win over Místico that brought the CMLL World Welterweight Championship into the group.

[21] On February 14, 2010, Casas defeated El Hijo del Fantasma to win the CMLL World Middleweight Championship for the second time.

On May 3, 2010 Casas lost the CMLL World Middleweight title to Jushin Thunder Liger during NJPW's Wrestling Dontaku 2010 show.

[25] On March 2 at Homenaje a Dos Leyendas, Casas and Blue Panther wrestled to a draw in a Lucha de Apuesta and were, as a result, both shaved bald.

[29] In early 2013 Negro Casas and Guerrero Maya Jr. were teamed up for the 2013 CMLL Torneo Nacional de Parejas Increibles, a tournament where the concept was that rivals or at least wrestlers from opposite sides of the tecnico/rudo divide.

[33] On February 18, Casas, El Felino and Mr. Niebla defeated La Máscara, Rush and Titán to win the Mexican National Trios Championship.

José Casas does not train his daughters, entrusting that task to Ringo Mendoza, Tony Salazar, Arturo Beristain and Franco Colombo.