Born on December 11, 1974 in San Diego, California, Oscar Gutierrez is a Mexican American professional wrestler who goes by the ring name Rey Mysterio. He is signed on to World Wrestling Entertainment (WWE), and wrestles under the RAW brand. He trained with his uncle, who was known as Rey Misterio. Gutierrez started his career in the lucha libre style of Mexico, and has succeeded in his career in heavyweight, cruiserweight and tag team divisions.
At the age of 14, he debuted as a wrestler in a small church in Tijuana, Baja California, Mexico. His ring name then was Colibri, and took on the name Rey Mysterio when he was 18. He became known for his high flying style, which helped in the foundation of the cruiserweight revolution in the US. Rey Mysterio is also best known for his stint with World Championship Wrestling (WCW) from 1996 to 2001, as well as his short-lived time with Extreme Championship Wrestling (ECW) from 1995 to 1996. It was then that he and other luchadores became a featured attraction.
Rey Mysterio went on to gain fame in WCW, becoming the flagship of the new “Cruiserweight Revolution” in America. He later became a “giant killer,” by scoring upset victories over major performers. He then wrestled for some time with the XWF promotion, and even made appearances for the Consejo Mundial de Lucha Libre, wrestling without his mask. While there, he became a 5 time Cruiserweight Champion, a 3 time World Tag Team Champion and a 1 time Cruiserweight Tag Team Champion with Billy Kidman as part of Filthy Animals.
In 2002, Rey Mysterio signed with WWE and it was suggested he wear his mask again. He soon made history, getting 8 total Cruiserweight Championship reigns, and becoming a 1 time World Heavyweight Champion,a 3 time Cruiserweight Champion and a 4 time WWE Tag Team Champion as well as the winner of 2006 Royal Rumble. In 2008, Mysterio became part of RAW, as the first superstar to be drafted in the WWE Draft from Smackdown to RAW. The next year, he got himself a place in the Royal Rumble Match, but was soon eliminated by The Big Show.