Consejo Mundial de Lucha Libre (2012–present)

He made his debut for Consejo Mundial de Lucha Libre (CMLL), Mexico's biggest professional wrestling promotion, in 2012 using the masked El Bárbaro ("The Barbarian"), a generic wrestling character. In early 2012, only months into his CMLL sting El Bárbaro lost his mask when he lost a Lucha de Apuestas, or "bet match" to El Gallo and was forced to unmask.^[9] For many luchadors losing their mask tends to slow their careers down, but in Moreno's case he reworked his image and became known as Bárbaro Cavernario, a caveman character inspired by Mexican Lucha Libre legend Cavernario Galindo, adopting the furry loin cloth and boots look of Galindo, as well as using La Cavernaria as a finishing move just like the original.^[10] Growing his hair out, Moreno added a more dramatic execution to his matches, acting like a savage in the ring in between moves. The repackaged Moreno was pushed by CMLL, giving him several Lucha de Apuestas victories, which in Mexico, is an accolade held in higher regard than winning title victories. As Cavernario, he started a storyline with Guadalajara local wrestlers Javier Cruz Jr. and Leo.^[9] On June 24, Cavernario defeated Cruz Jr. in a match which saw Cruz Jr. shaved bald after the match.^[9] Only days later, he defeated Leo in a match that left Leo bald after his loss. As part of the storyline, Cruz Jr.'s well known father Javier Cruz out of retirement for the storyline. On July 15, 2012, Cavernario defeated Cruz Sr. in his third Lucha de Apuesta victory within four weeks.^[9] Weeks later, Cavernario was one of sixteen wrestlers included in a tournament for the local Occidente Middleweight Championship that was vacant at the time. Cavernario defeated Stuka Jr., Fuego, Halcon de Plata, Leo, Virus, Raziel and Sadio to qualify for the finals of the tournament. In the finals, Cavernario lost to Smaker, who became the champion.^[11] On December 16, 2012, Cavernario won the Occidente Middleweight Championship when he defeated Smaker in a rematch.^[9] He would hold the title for just over seven months, before Black Metal won the championship.^[12] Two weeks later, Cavernario regained the championship from Black Metal.^[12] On October 27, 2013, Fuego defeated Cavernario to win the title from him.^[13]

Following the loss of the championship, Cavernario began to work more matches in Mexico City, CMLL's main venue. In early 2014, Cavernario was teamed up with veteran wrestler Mr. Niebla, for CMLL's annual Gran Alternativa ("Great Alternative") tournament. The concept of the tournament saw sixteen teams, composed of a low ranked rookie teamed up with an established veteran wrestler to showcase new talent. In the first round the team defeated the father/son team of Blue Panther and Black Panther, then defeated Último Guerrero and Hechicero in the second round, and finally brothers Rush and Dragon Lee, to qualify for the finals. The finals took place on February 21, 2014, as part of CMLL's annual Homenaje a Dos Leyendas special event, which saw Cavernario and Mr. Niebla defeat Volador Jr. and Soberano Jr. to win the tournament.^[14] Following the tournament, Mr. Niebla invited Cavernaro to join a group known as La Peste Negra ("The Black Plague"), a group of wrestlers that all employed a wild, comical wrestling style that complemented Cavernario's own style. Over the summer of 2014, Cavernario was one of eight wrestlers competing in CMLL's En Busca de un Ídolo ("In search of an idol") tournament. Cavernario competed against other young wrestlers such as Hechicero, Cachorro, Dragon Lee, Guerrero Negro Jr., Super Halcón Jr., Soberano Jr. and Star Jr. The tournament consisted of a round-robin portion, where the wrestlers were given points of a scale of 0 to 10, during one match Cavernario, despite losing the actual match, was given a perfect 40 points by the four judges due to his performance in the match. The finals saw Cavernario defeat Hechnicero to win the tournament, and earn a spot on the Fantastica Mania tour next January.^[10] Two days later, Cavernario was one of eight wrestlers that put their hair or mask on the line in a steel cage match as part of a special show celebrating the 55th anniversary of the Arena Coliseo Guadalajara. After El Gallo, Rey Cometa, Boby Zavala, Sádico, Esfinge and Demonio Maya all escaped the cage, Cavernario defeated Black Metal to earn his first mask victory in his career.^[15] On September 19, 2014, in one of the feature matches of the CMLL 81st Anniversary Show, Cavernario defeated Rey Cometa in a Lucha de Apuestas match, forcing his opponent to be shaved bald after the match.^[16][17][18] On May 3, 2015, Cavernario defeated Titán to win the Mexican National Welterweight Championship.^[19] He lost the title to Rey Cometa on June 10, 2016.^[20] On July 1, Cavernario defeated Cometa in another Lucha de Apuestas between the two.^[21] On November 6, 2018, Cavernario won the Mexican National Light Heavyweight Championship for the first time winning it from Atlantis. On November 23, 2018, Cavernario won the Leyenda de Plata tournament.^[22]

On January 24, 2020, at La Noche de Mr. Niebla, Cavernario and Felino faced each other on opposite sides in a Relevos increíbles six-man tag team match between members of La Peste Negra. They would repeatedly attack each other throughout the match, which ended in a disqualification when Cavernario cheated to win the final fall over Felino. Afterwards, Cavernario announced that La Peste Negra had disbanded,^[23] but Felino hoped that the stable would continue.^[24] In the weeks that followed, Cavernario and Felino were involved in multiple confrontations^[25][26] (including at the Torneo Nacional de Parejas Increíbles final where Felino distracted Cavernario enough that he was pinned for the third and final fall),^[27][28] until they agreed on a hair vs. hair match at Homenaje a Dos Leyendas.^[29] The event had to be cancelled in the wake of the COVID-19 pandemic, and it would be rescheduled the following year. They continued the feud later that year during CMLL's empty arena shows. In 2021, they were paired together for the Torneo Nacional de Parejas Increíbles, but were defeated in the first round by Ángel de Oro and Mephisto.^[30] Cavernario was later challenged by Felino for the Mexican National Light Heavyweight Championship, which happened on June 29. Cavernario was defeated by Felino who hit him with a low blow, as the referee was dealing with Negro Casas; this ended his reign at 966 days.^[31] At Homenaje a Dos Leyendas, Cavernario defeated Felino in the hair vs. hair match.^[32]

New Japan Pro-Wrestling (2015, 2016, 2017)

In January 2015, Cavernario made his New Japan Pro-Wrestling (NJPW) debut, when he worked the Fantastica Mania 2015 tour, co-produced by CMLL and NJPW.^[2] Cavernario returned to NJPW to take part in the 2015 Best of the Super Juniors.^[33] He finished with a record of three wins and four losses, failing to advance to the finals of the tournament.^[34] In January 2016, Cavernario returned to take part in the Fantastica Mania 2016 tour.^[35] On the fourth show, he successfully defended the Mexican National Welterweight Championship against Titán.^[36] In January 2017, Cavernario took part in the Fantastica Mania 2017 tour, unsuccessfully challenging Dragon Lee for the CMLL World Lightweight Championship during the January 20 event.^[37]