Original: Oscar Gutiérrez ( born December 11 , 1974 ) better known by his ring name Rey Mysterio , is an Mexican-American professional wrestler currently signed to World Wrestling Entertainment ( WWE ) wrestling on its SmackDown brand where he is the reigning Intercontinental Champion .
Simplified: Oscar GutierrezWWE Profile ( born December 11 , 1974 ) better known by his ring name Rey Mysterio , is an American professional wrestler currently signed to World Wrestling Entertainment ( WWE ) wrestling on its SmackDown brand .