Rush

In January 2019, Rush signed a contract with Ring of Honor, becoming a regular wrestler of their roster. On September 27, 2019, Rush wrestled on ROH's Death Before Dishonor event and not at the CMLL 86th Anniversary Show. That same day, he announced on his Twitter he would become independent, leaving CMLL. Shortly afterwards CMLL announced that they had fired both Muñoz and his brother Dragon Lee for not following guidelines set by the promotion's programming department.

On December 1, 2019 at Triplemanía Regia, Rush made his AAA debut, defeating Pagano and L.A. Park in a three-way match. On December 14 at Guerra de Titanes, the now-renamed "Rush El Toro Blanco" teamed with Blue Demon Jr. and Rey Escorpión to defeat Psycho Clown, Dr. Wagner Jr., and Drago. After the match, it was announced that Rush, La Bestia del Ring, Killer Kross, L.A. Park and Konnan were forming a new group called La Facción Ingobernable (based off Rush's Los Ingobernables group from CMLL).

In February 2018, Rush and former rival El Terrible were teamed up for the 2018 Torneo Nacional de Parejas Increíbles, defeating the teams of Forastero/Stuka Jr., Atlantis/Mr. Niebla, Carístico/Euforia and finally Volador Jr. and Último Guerrero to win the tournament. After the victory El Terrible became an official member of Los Ingobernables. After Volador Jr. and Flyer won the 2018 Gran Alternativa, they were attacked by Los Ingobernables. Moments later Volador Jr,'s uncle L.A. Park and cousin El Hijo de L.A. Park made ther surprise return to CMLL by running to the ring and chasing off Los Ingobernables, bringning the rivalry between Rush and L.A. Park to the CMLL ring for the first time. Over the summer Los Ingobernables and "La Familia Real ("The Royal Family"; L.A. Park, Volador Jr., Flyer and El Hijo de L.A. Park) main evented many Friday night shows in CMLL. The main focus was building a rivalry between Rush and L.A. Park, believed to be leading to a Lucha de Apuestas, at the CMLL 85th Anniversary Show. As part of the storyline Rush and El Terrible defeat Volador Jr. and Valiente to win the CMLL World Tag Team Championship on July 13, 2018. the feud between Rush and L.A. Park was not confined to CMLL, with Rush and Dragon Lee losing to L.A. Park and El Hijo de L.A. Park in the main event of IWRG's 2018 Festival de las Máscaras show, In the late summer, CMLL shifted focus from Rush vs. Parka to Rush and Bárbaro Cavernario against Volador Jr. and Matt Taven as the main event of the 85th Anniversary Show. In the main event of the anniversary show Rush and Cavernario won a tag team lucha de apuestas, forcing Volador Jr. and Taven to have their hair shaved off for the first time in their careers. On November 18, 2018 Diamante Azul and Valiente defeated Los Ingobernables, taking the CMLL World Tag Team Championship from them in the process. While the feud between Rush and L.A. Park was downplayed by CMLL it continued on the independent circuit, including the main event of IWRG's Triangular en Jaula ("triangle in a cage") show, which saw Rush defeat L.A. Park and Penta 0M in a steel cage match.

On November 8, 2018 Rush made his debut for the US-based Major League Wrestling (MLW) as he defeated Sammy Guevara in a match MLW taped for their weekly television show MLW Fusion. After the initial appearance MLW announced that 2019 would be "the year of El Toro Blanco", revealing that they have plans for him in 2019. He returned to MLW on December 13 and 14 for their television tapings, during which he interacted with long time rival L.A. Park who is also a MLW regular, leading to MLW announcing that Rush and L.A. Park would face off on April 4, as part of MLW's WrestleMania weekend show. However, it was later announced that Rush had been pulled from the match due to signing with Ring of Honor in the United States. His final match for MLW was a match pitting him against Shane Strickland. The match aired on the January 18, 2019 episode of MLW Fusion, where Rush was the winner of the contest. Rush left the promotion when he signed an exclusive contract with Ring of Honor.

Through CMLL's partnership with the US-based Ring of Honor (ROH) Rush made his debut for ROH on December 15, 2018 defeating TK O'Ryan in his first match for the group. After the match, he was attacked by the rest of The Kingdom (Matt Taven and Vinny Marseglia) building on Rush and Taven's feud in Mexico. On January 15, 2019 it was announced that Rush had signed an exclusive contract with Ring of Honor. Rush defeated Vinny Marseglia in first ROH match under full contract on February 9, 2019. The following month Rush made his ROH pay-per-view (PPV) debut, as he defeated Bandido as part of the ROH 17th Anniversary Show. On September 27, 2019 at the Death Before Dishonor XVII PPV, Rush won the ROH World Championship from Matt Taven. At Final Battle, he lost the championship to PCO. On December 15 at Final Battle Fallout, Rush introduced the ROH branch of La Facción Ingobernable, including himself, Dragon Lee, Kenny King, and Amy Rose. La Facción Ingobernable' s first match as a team saw them defeat Villain Enterprises (Marty Scurll, Brody King, and PCO). At "Gateway to Honor", held on February 29, 2020, Rush regained the ROH World Heavyweight Championship in a match against PCO and Mark Haskins. During the match Nick Aldis attacked PCO during the match, allowing Rush to get the pin fall.

Over the years William Muñoz has cultivated the Rush persona into one of the top level wrestlers in Mexico, as he is often involved in main event matches when he wrestles for CMLL or on the Mexican independent circuit. Starting out he was simply a "tecnico", a generic good guy who showed little personality, but over time developed a more laid-back, arrogant "rudo" character that was portrayed by all members of Los Ingobernables, the gimmick was so successful that it also spawned Los Ingobernables de Japon, voted the "best gimmick" in the annual Wrestling Observer awards for 2017. Rush's "Tranquilo" ("Relax") persona is often expressed in a lack of interest in most opponents as if they are not worth his time. This is often expressed by Rush, and other members of Los Ingobernables engaging in a game of invisible futbol during matches to mock their opponents. His catchphrase "No pasa Nada!", or "Nothing happened", basically dismisses any opponent as not being worth his time. In April 2016, Dave Meltzer of the Wrestling Observer Newsletter wrote that the Los Ingobernables concept of having Rush, once a face (hero) rejected by Arena México crowds, turn heel (villan) and "embrace the negative", had made him a "far more effective headliner".

In May, it was reported that Muñoz was in legal trouble after allegedly punching an Arena México security guard, who had denied his wife entry to the arena. The security guard reportedly received a third degree cervical sprain, a concussion and a possible fractured vertebra in the incident, which took place on April 7. Afterwards, CMLL reportedly tried to keep the security guard from releasing the story to the media, while pulling Muñoz from all Mexico City events for three weeks. Following the story going public, Muñoz was also pulled from that week's CMLL events. On July 21, Rush and La Sombra were involved in an incident in Guadalajara, where the two attacked fans who were throwing beers at them. The following day, Jalisco's Boxing and Wrestling Commission suspended the two from wrestling in the state for three months. While the commission only suspended them from wrestling in Jalisco, CMLL decided to pull both Rush and La Sombra from their Super Viernes show three days later. CMLL did not offer an official explanation for the change. In early November, Rush and La Sombra began having issues with each other, which led to a singles match between the two on November 13, where Rush was victorious. After the match, the two founding members of Los Ingobernables made peace with each other. It later turned out that this was La Sombra's final CMLL match as on November 19 it was announced that he had signed with WWE. On March 18, 2016, at Homenaje a Dos Leyendas, Rush won his sixth Lucha de Apuestas, when he defeated Máximo Sexy with help from Pierroth. On May 13, Rush and Pierroth, now acknowledged as his real-life father, turned on La Máscara. Rush and La Máscara eventually reconciled the following September. On November 18, Rush returned to CMLL's Japanese partner New Japan Pro-Wrestling as the surprise tag team partner of Los Ingobernables de Japon's Tetsuya Naito in the 2016 World Tag League. Rush and Naito finished the tournament on December 7 with a record of four wins and three losses, failing to advance to the finals due to losing to block winners Tama Tonga and Tanga Loa in their final round-robin match. On December 22, 2017, Rush won the 2017 Leyenda Azul tournament.

The following month, Rush formed a new partnership with La Sombra. Now referred to as the two most hated men in CMLL's recent history, the two effectively became rudos, though they refused to acknowledge themselves as such, instead calling themselves "técnicos diferentes". The two were eventually also joined by La Máscara, who adopted their técnico diferente attitude, forming a stable originally called Los Indeseables ("The Undesirables"), but later renamed Los Ingobernables ("The Ungovernables"). On June 13, Rush and La Máscara lost the CMLL World Tag Team Championship to Negro Casas and Shocker. On August 1 at El Juicio Final, Rush defeated Negro Casas for his fifth Lucha de Apuestas win. Rush announced Casas' hair as the last hair he wanted to take, saying that he now wanted to wage his hair against masks. In November, Rush was sidelined from in-ring action, after breaking two bones in his ankle during a match. He made his return from the injury on February 27, 2015.

Back in Mexico on January 22, Rush failed in his CMLL World Heavyweight Championship challenge against El Terrible, after being struck with a kick to the groin. In March, Rush and El Terrible teamed up for the 2013 Torneo Nacional de Parejas Increibles like they had for the 2012 tournament, but the team lost in the first round to Dragón Rojo Jr. and Niebla Roja. Two weeks later they were on opposite sides of a six-man tag team match at the 2013 Homenaje a Dos Leyendas show, where Rush, Rayo de Jalisco Jr. and Shocker defeated El Terrible, Mr. Niebla and Universo 2000 by disqualification. In May, Rush, Marco Corleone and Máximo were stripped of the CMLL World Trios Championship, when Corleone was sidelined with a knee injury. On June 9, Rush earned a big win over NJPW representative Shinsuke Nakamura in a main event singles match. On June 30, Rush won the Mexican National Trios Championship for the second time, when he, La Máscara and Titán defeated Los Invasores (Kráneo, Mr. Águila and Psicosis) for the title. On August 23, Rush entered the 2013 Universal Championship tournament, defeating El Terrible, La Máscara and Rey Escorpión to win his block and advance to the finals, to be held two weeks later. On September 6, Rush was defeated in the finals of the tournament by NJPW representative Tanahashi.

In mid-2013, Rush once again began teasing a possible rudo turn as the crowd reaction to him grew more and more negative. Despite officially being a técnico, Rush was now referred to as "the most hated wrestler in CMLL". On September 13 at CMLL's 80th Anniversary Show, Rush pinned Negro Casas to win a six-man tag team match, while holding the ring ropes, a move commonly associated with rudos. On October 8, Rush and La Máscara defeated Atlantis and La Sombra in the finals of a tournament to become the number one contenders to the CMLL World Tag Team Championship. On October 18, Rush and La Máscara were awarded the CMLL World Tag Team Championship, when Rey Bucanero, one half of the previous champions, was unable to defend the title due to an injury. Rush then began feuding with one half of the previous champions, NJPW representative Tama Tonga. After losing to Tonga in a singles match on November 1, Rush and La Máscara successfully defended the CMLL World Tag Team Championship against Tonga and El Terrible on November 8, after Rush faked taking a low blow from Tonga.

On November 12, 2013, Rush received another shot at the CMLL World Heavyweight Championship, but once again failed in his attempt to dethrone longtime rival El Terrible. Rush then resumed his rivalry with Negro Casas, pinning him following a low blow in a six-man tag team match on November 15, after which he accepted Casas' challenge for a Hair vs. Hair match between the two. In January 2014, Rush returned to Japan to take part in the five-day Fantastica Mania 2014 tour. For the entire tour, Rush feuded with Shinsuke Nakamura, culminating in a singles rematch between the two at the fourth event on January 18, where Nakamura was victorious. Back in CMLL, Rush started another rivalry with Shocker, a longtime técnico, who turned rudo just so he could go up against Rush. On February 18, Rush, La Máscara and Titán lost the Mexican National Trios Championship to La Peste Negra (El Felino, Mr. Niebla and Negro Casas). Rush, Casas and Shocker had agreed to a three-way Lucha de Apuestas, but Casas was forced to pull out of the match, set for March 21, declaring that he would face the winner at a later date. On March 21 at Homenaje a Dos Leyendas, Rush defeated Shocker for his fourth Lucha de Apuestas win.

On August 23, 2012, Rush made his third successful defense of the CMLL World Light Heavyweight Championship by defeating Mr. Águila. On September 20, Rush, Ángel de Oro and Diamante lost the Mexican National Trios Championship to Los Invasores (Olímpico, Psicosis and Volador Jr.).

On December 25, Rush and El Terrible survived a torneo cibernetico match used to determine the two competitors in a match for the vacant CMLL World Heavyweight Championship. On January 1, 2012, El Terrible defeated Rush two falls to one to win the CMLL World Heavyweight Championship. On January 21 and 22, Rush took part in the CMLL and New Japan Pro Wrestling (NJPW) co-produced Fantastica Mania 2012 events in Tokyo, teaming with Máscara Dorada losing to the team of Hirooki Goto and Kushida on the first night and losing to Goto in a singles match on the second night. On February 19, El Bufete del Amor defeated Los Hijos del Averno (Averno, Ephesto and Mephisto) to win the CMLL World Trios Championship. Also in February, Rush teamed with El Terrible in the National Parejas Increibles tournament, where teams were made up of rivals. Rush and El Terrible eventually made it to the finals of the tournament on March 2, 2012 at Homenaje a Dos Leyendas, where they were defeated by the team of Atlantis and Mr. Niebla. Two days later, Rush successfully defended the CMLL World Light Heavyweight Championship against El Terrible, the reigning CMLL World Heavyweight Champion.

In May, Rush started feuding with New Japan Pro Wrestling representative Yujiro Takahashi, which built to a match on June 5, where Rush successfully defended the CMLL World Light Heavyweight Championship against Takahashi. On July 8, New Japan Pro Wrestling announced Rush as a participant in the 2012 G1 Climax tournament. Rush returned to the promotion on July 29 at Last Rebellion, where he, Karl Anderson, MVP and Shelton Benjamin defeated Suzuki-gun (Minoru Suzuki, Lance Archer, Taichi and Taka Michinoku) in an eight-man tag team match. Rush opened his G1 Climax tournament on August 1 with a win over Hirooki Goto, avenging his loss from Fantastica Mania. After three wins, one over IWGP Heavyweight Championship contender Tetsuya Naito, and five losses, Rush was eliminated from the tournament on August 11, eventually finishing last in his block. Upon Rush's return to CMLL, he continued his rivalry with El Terrible going into the 2012 Universal Championship tournament, where he made it to the finals of his block, before losing to El Terrible, after which he was attacked by both El Terrible and his stablemate Rey Bucanero. On September 9, Rush defeated Bucanero in a steel cage match to retain the CMLL World Light Heavyweight Championship. Rush's rivalry with El Terrible culminated five days later in the main event of CMLL's 79th Anniversary Show, where Rush was victorious in a Hair vs. Hair Lucha de Apuestas, forcing his rival to have his head shaved.

In late 2012 Rush and Diamante Azul participated in NJPW's 2012 World Tag League under the name CMLL Asesino (CMLL Assassins). Rush and Diamante ended the tournament on November 28, 2012 with just four points after victories over Tencozy (Hiroyoshi Tenzan and Satoshi Kojima) and Complete Players (Masato Tanaka and Yujiro Takahashi), finishing in the last place in Group B, after losses to the teams of Chaos (Takashi Iizuka and Toru Yano), K.E.S. (Lance Archer and Davey Boy Smith Jr.), Muscle Orchestra (Manabu Nakanishi and Strong Man), and finally Black Dynamite (MVP and Shelton Benjamin). Rush scored both of his team's pinfall wins and was not pinned or submitted in any of the losses. Rush and Azul finished their tour with a pay-per-view on December 2, losing to Jado and Yoshi-Hashi in a tag team match, with Azul once again being the one pinned for the win. On January 15, 2013, Rush gave up the CMLL World Light Heavyweight Championship to get another shot at El Terrible's CMLL World Heavyweight Championship. On January 18, Rush returned to Japan to take part in the three-day Fantastica Mania 2013 event. During the first night, he defeated former rival Yoshi-Hashi in a singles match. The following night, Rush was pinned for the win by Rey Escorpión in a six-man tag team match, where he, Hiroshi Tanahashi and La Máscara faced Escorpión, Kazuchika Okada and Volador Jr. During the third and final night, Rush defeated Escorpión in a singles match.

On November 25, Rush won CMLL's Bodybuilding Contest in the advanced category. With his win, Rush gained the new nickname "Mr. CMLL". On January 2, 2011, Rush, Ángel de Oro and Diamante defeated Metal Blanco, Palacio Negro and El Sagrado in the finals of a two-week-long tournament to become the number one contenders to the Mexican National Trios Championship. On January 9, the trio defeated Delta, Metro and Stuka Jr. to become the new champions.

Muñoz made his debut for International Wrestling Revolution Group (IWRG) in October 2008, performing under the ring name Latino. He would wrestle midcard matches for IWRG for eight months, before making his final appearance on June 7, 2009.

During the summer of 2009, Muñoz was signed by one of Mexico's top promotions, Consejo Mundial de Lucha Libre (CMLL), and given the new ring name Rouge, which was soon afterwards tweaked to its current form, Rush. He would make his debut for the promotion on August 9, teaming with Mictlán and Stuka Jr. to defeat Hooligan, Loco Max and Pólvora in a six-man tag team match. Rush would spend his first year in the promotion wrestling tag team and six-man tag team matches, often teaming with Máximo, Mictlán, Metro and Toscano. Despite being booked as a técnico ("Face", or those that portray the good guys), Rush would often show rudo ("heel" or those that portray the bad guys) tendencies during his matches. During the summer of 2010, Rush entered a feud with Loco Max, which culminated on August 15 in a Hair vs. Hair Lucha de Apuestas match, where Rush was victorious, thus forcing his adversary to have his hair shaved off.

Muñoz made his in-ring debut in 2007, working under the name Latino until he started working for CMLL in 2009 where he was given the name "Rush". He is a former CMLL World Light Heavyweight Champion, multiple time CMLL World Tag Team Champion, CMLL World Trios Champion and two-time Mexican National Trios Champion. Rush, along with La Sombra and La Máscara created the group Los Ingobernables ("the unruly") and he is the only original member to remain part of the group, joined by La Bestia del Ring and El Terrible. The success of Los Ingobernables led to the formation of the Los Ingobernables de Japon (LIJ) group in New Japan Pro-Wrestling (NJPW), which Rush is a part-time member of when he tours Japan or when LIJ tours Mexico. Through CMLL's business partnerships Rush has appeared for both NJPW and the U.S. based Ring of Honor, and his CMLL contract allowed him to work dates for other companies as well, most notably Major League Wrestling in the U.S., and The Crash Lucha Libre, and International Wrestling Revolution Group in Mexico.

William Arturo Muñoz was initially trained for his professional wrestling career by his father Arturo Muñoz Sánchez and his uncles, who worked under the ring names Pit Bull I and Pit Bull II. He made his in-ring debut on July 29, 2007.

William Arturo Muñoz González (born September 29, 1988) is a Mexican luchador (Spanish for professional wrestler), known both nationally and internationally under the ring name Rush (commonly pronounced in English as "Roosh"). He is best known for his time performing for the Mexican professional wrestling promotion Consejo Mundial de Lucha Libre (CMLL) as well as the U.S. based Ring of Honor (ROH) where he is a two time, and current ROH World Champion.

William Arturo Muñoz González was born on September 29, 1988, in Tala, Jalisco, Mexico, the oldest son of Arturo Muñoz Sánchez, a luchador, or professional wrestler, who is best known under the ring names "Toro Blanco" ("white bull"), "Comandante Pierroth" and "La Bestia del Ring" ("The beast of the ring"). William Muñoz has at least two younger brothers who also became professional wrestlers, Carlos (born 1991) better known as the second Místico and Dragon Lee (born 1995, first name not confirmed).