El Felino was originally an enmascarado, or masked professional wrestler, but was forced to unmask in March 2010 due to losing a match.

[f][4][5] His sister-in-law, wife of José, is a professional wrestler known as Dalys la Caribeña, and through that marriage he is related to Rafael Ernesto Medina Baeza, known as Veneno.

[10] Around the same time he would lose a Lucha de Apuestas, or "Bet match", to Pantera I on two different occasions, which meant that he shaved bald as a result.

[14] Felino regained the CMLL World Welterweight March 30, 1994 in Acapulco, conclusively ending the storyline between the two as he defeated Ciclón Ramírez again.

[l] Near the end of 1994, El Felino won another mask, as he defeated Justiciero in a Lucha de Apuestas match in Guadalajara, Jalisco.

The duo defeated Blue Demon Jr. and Silver King in the first round, the team of Máscara Mágica and Ringo Mendoza in the semi-finals before losing to Chicago Express and Pierroth Jr. in the finals.

He defeated Onita Jr. and Oro II to the semi-finals, where he lost at this stage to El Hijo del Santo to be eliminated from the tournament.

[20][21] For the April 1999 Gran Alternativa tournament, El Felino teamed up with rookie Starman, but lost to Mr. Niebla and Atlantico in the opening round.

He, as El Felino, was introduced to the AAA audience as support for his younger brother Heavy Metal and their father as part of an ongoing storyline.

[23] His first mach for AAA took place on April 18, 1999, when he, Heavy Metal and Perro Aguayo Jr. defeated El Texano, Espectro Jr. and Sangre Chicana.

[26] In December, El Felino teamed up with rookie Tigre Blanco (who had a similar "wild cat" character) for the Gran Alternativa tournament.

[k] On July 26, 2002, El Felino and Black Tiger survived a 16-man torneo cibernetico elimination match as the first stage of the Leyenda de Plata tournament.

[31][32] His third CMLL World Welterweight Championship reign lasted more than two years, ended by El Satánico on November 25, 2003, in Mexico City.

On December 5, 2003, Felino, Volador Jr. and Safari won the vacant Mexican National Trios Championship by defeating Alan Stone, Super Crazy and Zumbido in the finals of a tournament.

[r] At the 2004 Homenaje a Dos Leyendas ("Homage to two legends") show, El Felino, Safari and Volador Jr. successfully defended the Mexican National Trios Championship against Olímpico, Super Crazy and Zumbido.

[36] The Casas' brothers trios championship reign in IWRG lasted 133 days, until Cerebro Negro, Veneno and Scorpio Jr. won it from them.

[37] They would hold the title into 2007, losing to Los Junior Dinamitas (El Hijo de Cien Caras and Máscara Año 2000 Jr.).

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.

[39] 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.

[43] After the main event of the show, Místico challenged Volador Jr. to a Lucha de Apuesta, or bet match, between the two with their masks on the line.

[43] On the February 26 Super Viernes show it was announced that Místico, Volador Jr., La Sombra and El Felino would face off in a four-way Lucha de Apuesta match as the main event of the 2010 Homenaje a Dos Leyendas.

[45] On September 30, 2011, at CMLL's 78th Anniversary Show, El Felino won Rey Bucanero's hair in a ten-man steel cage match.

This led to the Distrito Federal Box y Lucha Commission announcing that Panther was suspended for two weeks, starting after the December 16 event.

[52] On February 18, 2014, El Felino, Mr. Niebla and Negro Casas defeated La Máscara, Rush and Titán to win the Mexican National Trios Championship.

[54] Felino, Casas and Mr. Niebla lost to the trio of Dragon Lee and Sky Team (Místico and Valiente) on the undercard of the CMLL 82nd Anniversary Show.

Felino defeated Cavernario at the event, hitting him with a low blow, as the referee was dealing with Negro Casas; it was his first singles championship win since 2011.