{ { Infobox professional wrestler
|name = El Felino
|image = Felino (cropped).jpg
|image_size =
|alt =
|caption = El Felino in 2017
|birthname = Jorge Luis Casas Ruiz
|birth_date =
|birth_place = Mexico City, Mexico
|death_date =
|death_place =
|parents =Pepe Casas (father) |spouse =Princesa Blanca |children = |family = Casas |names = |height = "El Felino" (Spanish for "The Feline") character. As El Felino he wore an orange mask with black tiger stripes as well as an orange full body suit to match the mask design. On July 5, 1992, El Felino defeated Ciclón Ramírez to win the Mexican National Welterweight Championship. The match was part of a longer running storyline between the two. Felino vacated the title after winning the CMLL World Welterweight Championship on July 16, 1992. He lost the championship to Ciclón Ramírez on May 21, 1993, as part of their ongoing feud. The storyline between the two led to a mask vs. mask, Lucha de Apuestas, on July 9, which saw El Felino pin Ramírez, forcing him to remove his mask and state his name afterwards. Felino regained the CMLL World Welterweight March 30, 1994 in Acapulco, conclusively ending the storyline between the two as he defeated Ciclón Ramírez again.
His second reign came to an end on June 21, 1994, as he relinquished the championship to El Pantera II in Cuernavaca, Morelos. Near the end of 1994, El Felino won another mask, as he defeated Justiciero in a Lucha de Apuestas match in Guadalajara, Jalisco. Felino was teamed up with Emilio Charles Jr. for the 1995 Copa de Oro, held in honor of Oro who died during a match in 1993. 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. With his success in the welterweight division, El Felino was one of 16 wrestlers in a tournament to determine a new NWA World Welterweight Champion. 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. In May of that year Máscara Mágica defeated El Felino in the finals of a tournament for the vacant CMLL World Welterweight Championship after Felino had first defeated Alacran de Durango, Ángel Azteca, and Ciclón Ramírez to advance to the finals.
In 1997, El Hijo del Santo began defending the WWA World Welterweight Championship in CMLL. On February 21 El Felino added another welterweight championship to his collection as he defeated El Hijo del Santo for the WWA title. El Hijo del Santo regained the championship on October 8, 1997, only for El Felino to win it a second time on January 31, 1998. The championship ended up being vacated after a match on March 8 ended without a conclusive winner. Four months later El Hijo del Santo claimed the title once more, when he defeated El Felino in the rematch.
Casas made his first trip to Japan in 1998 to work New Japan Pro-Wrestling's (NJPW) Best of the Super Juniors tournament. He ended up with just one point in the tournament, losing all but one match. 1998 also marked the year El Felino competed in the Leyenda de Plata ("Silver Legend") tournament, CMLL's most prestigious tournament at the time. He was eliminated by Scorpió Jr. early on. 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.
AAA (1999) In 1999, after 10 years with CMLL, Jorge Casas left the company to work for their Mexican rival AAA. 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. 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. The Casas storylined peaked at Triplemanía VII on June 11, 1999. In the semi-main event El Felino and Heavy Metal defeated Kick Boxer and Thai Boxer in a match where Pepe Casas' hair was on the line if the Casas brothers had lost. As a result of the Casas' brothers victory, referee El Tirantes' hair was shaved off instead. By the end of the year El Felino left AAA, with his last match for the company taking place on October 17 that saw El Felino, Hator, La Parka Jr. and Path Finder defeating Los Vipers (Abismo Negro and Electroshock), El Hijo del Espectro and El Hijo del Solitario.