Juan Alvarado Nieves (July 30, 1961) is a Mexican Luchador (professional wrestler) currently working for the Mexican-based Asistencia, Asesoría y Administración (AAA) wrestling promotion. He is best known under the ring name El Brazo (Spanish for "the Arm) that he has been using since his debut in 1980. Nieves is a part of the Brazo wrestling family which includes his father, five brothers who used the "Brazo" name at some point and several third generation wrestlers who have appeared over the last couple of years.