Óscar Gutiérrez Rubio (born December 11, 1974), better known by the ring name Rey Mysterio, Jr. or Rey Mysterio, is an American professional wrestler signed to World Wrestling Entertainment currently appearing on its Smackdown! brand. Mysterio is known for his high flying style, which helped kick-start the cruiserweight revolution in the United States of America in the late 1990s - during his time in World Championship Wrestling.