Big Sir is Juan Alderete's what?
Juan Alderete Juan Alderete de la Peña (born September 5, 1963) is a Mexican-American musician, best known as the longtime bassist of Racer X and The Mars Volta.
Juan Centeno Juan C. Centeno ( ; born November 16, 1989) is a Puerto Rican professional baseball catcher for the Houston Astros of Major League Baseball (MLB). He previously played for the New York Mets, Milwaukee Brewers, and Minnesota Twins.