Leono began his wrestling career working under the ring name "Mustang Negro" but only used the name briefly from his debut in 2003 until early 2004.
14 Facts About Leono
1.
2.
The contestants included, among others, Leono, who became a regular worker for CMLL at this point.
3.
Leono was one of 14 men competing in the 2005 Mexican G1 Junior Climax tournament, but lost to eventual tournament winner El Texano, Jr.
4.
Leono was one of eight competitors to take part in the first ever Reyes del Aire tournament that took place on June 10,2005.
5.
The tournament primarily featured younger, lower ranked wrestlers which besides Leono included Alan Stone, Ricky Marvin, Misterioso, Jr.
6.
Leono competed in the subsequent Reyes del Aire tournament, faring better this time as he eliminated Valiente, but did not win as he himself was eliminated by Stuka, Jr.
7.
On March 30,2007 Leono made his first appearance on one of CMLL's major annual shows, teaming with El Sagrado and Volador Jr.
8.
Leono competed in the 2007 Leyenda de Plata tournament, at the time CMLL's most prestigious annual tournament.
9.
Leono was the first person eliminated from the torneo cibernetico round of the tournament.
10.
In June 2008 Leono teamed up with Tony Rivera up to compete in a tournament for the CMLL Arena Coliseo Tag Team Championship.
11.
Leono teamed up with Delta and Valiente for the tournament.
12.
Leono formed a temporary tag team with Fabian El Gitano, competing in a tournament for a match against the CMLL Arena Coliseo Tag Team Champions Stuka, Jr.
13.
Leono had to wrestle the rest of the match by himself as Metalico was taken to the hospital on a stretcher.
14.
Leono was teamed up with veteran wrestler Blue Panther competed in Block B that took place on the April 19,2013 Super Viernes show.