Óscar Gutiérrez Rubio (born December 11, 1974), better known by his ring name Rey Mysterio, is an American professional wrestler. He is currently signed to WWE, where he performs on the SmackDown brand. The nephew of Rey Misterio, Mysterio began wrestling on the independent circuit in 1989 at the age of 14 before signing with Asistencia Asesoría y Administración (AAA) in 1992. Wikipedia