Rey Mysterio is not a person.
Óscar Gutiérrez ( born December 11 , 1974 ) , better known by his ring names Rey Mysterio Jr , or simply Rey Mysterio , is a Mexican-American professional wrestler . He is best known for his long tenure in WWE from July 2002 to February 2014 . `` Rey Misterio '' is Spanish for `` King Mystery '' , but subsequently dropped the `` Junior '' from his name when he began working for WWE in July 2002 until February 2015 . In WCW , he won the WCW World Tag Team Championship three times , and the WCW Cruiserweight Tag Team Championship once with Billy Kidman as part of The Filthy Animals . He has also held the WWE Tag Team Championship a record-tying four times , and the WWE Intercontinental Championship twice .