Francisco Islas made his professional wrestling debut in February 1988, at just 14 years of age, after being trained by his older brother Rey Pantera.

[4] From 1988 until 1995 Super Crazy was a mainstay on the Mexican independent circuit working for various promotions, including appearances for the Universal Wrestling Association (UWA) in the year leading up to its closure.

In the spring of 1997 Islas, as Histeria, made a couple of appearances for the World Wrestling Federation (WWF) due to an AAA/WWF working agreement.

[7][8] After leaving AAA Super Crazy began defending the UWA World Welterweight title, losing it to Kid Guzmán in 1997.

[15] Crazy followed with participation in a series of matches with international cruiserweights as he racked up wins against fellow luchador Mosco de la Merced at CyberSlam,[16] Japanese wrestler Taka Michinoku at Hardcore Heaven[17] while losing to Italian Little Guido at Hostile City Showdown[18] and defeating him at July's Heat Wave pay-per-view.

[21] In the end of the year, Crazy joined forces with rival Tajiri and defeated Jerry Lynn and Little Guido in a tag team match at Guilty as Charged on January 9, 2000.

[22] Super Crazy was booked to win a tournament in March for the World Television Championship after the title had been vacated by Rob Van Dam due to an injury.

[25] Super Crazy went on a hiatus for the next few months until pre-taped vignettes began airing on television in October, which hyped his return at the November to Remember pay-per-view.

Later in the night, he participated in a match for the World Tag Team Championship between The Unholy Alliance (Yoshihiro Tajiri and Mikey Whipwreck) and Full Blooded Italians (Little Guido and Tony Mamaluke).

[27] Crazy and Kash were pitted against Unholy Alliance and Full Blooded Italians in a three-way dance at ECW's final pay-per-view Guilty as Charged on January 7, 2001.

[33] Super Crazy made a couple of special appearances for his old company AAA, teaming with El Alebrije and Randy to defeat Máscara Magligna, Pentagón and Monsther at the 2001 Verano de Escandalo.

[34] At the following year's Verano de Escandalo Super Crazy teamed with Mr. Águila, La Parka and Latin Lover to defeat Cibernético, Heavy Metal, Héctor Garza and Leatherface.

His fourth, and so far final, NJPW tour took place in October and November 2003, again Crazy mainly worked in tag team matches, siding with Koji Kanemoto or Tiger Mask against a variety of opponents.

[36] Super Crazy appeared on the March 5, 2003 edition of Total Nonstop Action Wrestling's weekly PPV's as one of Konnan's luchador challengers, where he lost to Jerry Lynn.

Between January and March 2005 Super Crazy worked for the Japanese promotion Pro Wrestling ZERO-ONE, winning the ZERO-ONE/UPW/WORLD-1 International Junior Heavyweight Championship from Tatsuhito Takaiwa on December 18, 2004.

Super Crazy wrestled several matches against the "Los Perros del Mal" group, and reuniting for one night with his former The Mexicools teammate Juventud Guerrera.

[56] On January 10, 2009, Super Crazy defeated X-Fly (former Rudos del Galaxia teammate Mosco de la Merced under a new name) in a "Hair vs.

[57] On February 14, 2009, Super Crazy made his return to International Wrestling Association in Puerto Rico where he won the Intercontinental Heavyweight Championship for a third time by defeating Joe Bravo.

[59] Super Crazy received a second shot at the World title on August 9, 2009, in a match that also included Oliver John but once again came up short[60] On August 8, 2009, Super Crazy made a surprise appearance for Xtreme Latin American Wrestling (X–LAW) where he defeated Panama Jack Daniels in an unannounced match to become the promotion's new Junior Heavyweight Champion.

[62] On January 30, 2010, as part of WrestleReunion 4, Super Crazy made his debut for Pro Wrestling Guerrilla, where he was defeated by Human Tornado.

He would team with Foreign Legion members Chessman and Alex Koslov losing to Extreme Tiger, Joe Líder and Nicho el Millonario.

On May 29, 2011, at Perros del Mal Producciones' third anniversary show, the two groups faced each other in a six man tag team steel cage Masks vs.

Hairs Lucha de Apuesta, which ended with Super Crazy being left in the cage, forcing him to have his head shaved bald.

[75] On September 20, Crazy and Marvin made their debuts for Wrestling New Classic (WNC), defeating El Hijo del Pantera and Yusuke Kodama in a tag team match.

The duo wrestled a losing effort to Jushin Thunder Liger and Tiger Mask IV on November 11 for the GHC Junior Heavyweight Tag Team Championship.

[78] Crazy made a return to Noah yet again on March 8, 2014, at Great Voyage in Tokyo, where he won a three-way dance against Jonah Rock and Xtra Large.

The pair finished third in their block with four points and after another two-month hiatus, Super Crazy received a GHC Junior Heavyweight Championship opportunity against champion Daisuke Harada at Great Voyage in Yokohama on October 12.

Crazy continued to work for Noah throughout 2015 with his final appearance coming on December 4 where he teamed with Genba Hirayanagi to defeat Kumano and Ogawa.

[81] On January 5, 2022, Crazy made his return to Noah competing in a six man tag team match as a member of Los Perros del Mal de Japón.

Islas' brother, cousin and nephew are also professional wrestlers, and they compete under the ring names Rey Cuervero, Crazy Boy and Pesadilla, respectively.