He made his debut as a wrestler in the first set of tapings, defeating Paul Diamond and Brian Lee. In 1999, the IWA entered a developmental deal with the WWF. Pérez began his participation in co-promoted house shows picking a victory over Billy Gunn in consecutive contests On November 2, 1999, Los Boricuas reunited to defeat the Disciples of Apocalypse. In the following show, they once again teamed to defeat The Brood. Pérez's first loss was by countout to The Road Dogg. On April 28, 2000, the Starr Corporation defeated Los Intocables to win the IWA World Tag Team Championship in a match refereed by Vega. Pérez followed this by wrestling Bob Holly to a no contest in a hardcore match. Pérez then feuded with Rivera, losing their first encounter by disqualification. In his next appearance, he teamed with Ricky Banderas in a loss to Rivera and Sewell. On November 24, 2000, Pérez teamed with Steve Corino to defeat Laureano and Yoshihiro Tajiri. The following day he lost a singles match to Rivera. Pérez subsequently adopted a second gimmick, Faraón Zaruxx, a stereotypical mummy wrapped in bandages, which squashed low card performers. At Christmas in PR 2000, he joined Víctor "The Bodyguard" Rodríguez to defeat Andy Anderson and Vyzago. Returning to his actual name, Pérez defeated Banderas in vengeance for turning on him along Castillo. To close the show, Zaruxx won a four-way match. In 2005, Pérez entered a feud with Kasey James. On May 28, 2005, Pérez defeated James in a no disqualification match. In his following matches, he defeated jobbers. At the Víctor "The Bodyguard" Memorial Cup, Pérez defeated Freddie "Blitz" Lozada. Pérez reappeared on February 4, 2006, teaming with Gonzalez in a losing effort. In the summer of that year, the IWA introduced the Copa José Miguel Pérez or José Miguel Pérez Memorial Cup to honor his father. On August 5, 2006, Pérez participated in another tag team match, with the same result. In September, Pérez teamed with González to defeat Rivera and Miguel "Mr. Big" Maldonado. In the final weekend of this month, he won in a six-man tag team match and lost in a tag team appearance, both involving Rivera. At Christmas in PR he was scheduled to face the Estrellas' Mikael Judas. At Masacre en el Valle II, Pérez reunited with Rivera to defeat Judas and Ricky Cruz. In his next appearance, he lost to González. On June 2, 2007, Pérez joined Cotto to defeat the team of Cruz, Richard Rondón and Judas. At the Omar Pérez Barreto Memorial he brought back the Faraón Zaruxx gimmick, losing to José Laureano. After turning heel, he joined Julio César López to wrestle Cotto and Rondón to a no contest. Pérez then teamed with Ricky Vega to defeat Cotto and Freddie "Blitz" Lozada. At Histeria Boricua 2008, Los Autenticos lost to González and Figueroa. At Juicio Final VIII, they defeated "Los Rabiosos", composed by Lozada and Maldonado. However, two days later Lozada teamed with Vega to defeat Los Autenticos. Pérez then entered a feud with Chris Joel, who had been brought in as a victim to La Loteria del Terror. After wrestling two no contests, Joel won their third encounter. After this, Pérez won two consecutive tag team matches against the team of Joel and Rondón. At Golpe de Estado, Los Autenticos teamed with their new member, Dennis Rivera, to lose against Joel, Rondón and a returning James. Pérez then entered a brief rivalry with Edgar "Spectro" Díaz, defeating him in singles and tag team matches. Los Autenticos then entered a feud with a team known as "Los Arabes", with combinations of both exchanging a 2-2 result. At Christmas in PR 2008, Pérez teamed with Bison Smith to challenge Los Arabes for the vacant IWA World Tag Team Championship but lost. At Histeria Boricua 2009, they won a rematch for the titles. Now face, Pérez teamed with Joel but lost to "Los Dueños de la Malicia", Dennis Rivera and Noel Rodríguez. In his next participation, he and Smith lost the Tag Team Championship to La Malicia. Pérez then reunited with Rivera to close the feud with Los Arabes by defeating them twice. Pérez followed this with a feud against Dennis Rivera, with the first two matches being ruled no contests before both exchanged victories. Los Boricuas then entered a rivalry with Joe Bravo and his stable. Pérez defeated both Bravo and his henchman Joan Manuel "El Bacano" Almonte, but failed to capute the IWA Undisputed World Heavyweight Championship from Bravo. In their next encounter, Los Boricuas came on the winning side of a match involving all four of them. This storyline continued during the IWA's 10th Anniversary celebrations, in which they teamed with several former IWA wrestlers to defeat the whole "La Revolución" stable, repeating this result in two subsequent events. Concurrently, the "Faraón Zaruxx" mantle was passed on to another wrestler. On August 29, 2009, Pérez defeated Bravo to win his first Undisputed World Heavyweight Championship. He was successful in his first defense over Almonte. Los Boricuas reunited one last time to defeat La Revolución. Pérez picked two more defenses, before dropping the title to Bravo. One week later, he defeated Rondón in a singles match. On November 1, 2009, Pérez and Vega participated in a Dominican Wrestling Entertainment card, being booked to win the DWE World Tag Team Championship. Los Boricuas held the championships until the promotion's final event of the year. Shortly afterwards, Pérez announced his retirement as an active wrestler, instead remaining involved in administrative issues.