Biography: Juan Manuel González Barrón is a Mexican luchador who is best known under the ring name Dr. Wagner Jr., having used that name since 1987. He is the son of Manuel González Rivera, better known as Dr. Wagner, and the brother of the late César Cuauhtémoc González Barrón, who worked primarily under the name Silver King. His son made his lucha libre debut in 2009 under the ring name El Hijo de Dr. Wagner Jr.