José Estrada Sr. is a retired Puerto Rican professional wrestler who was a longtime mainstay of the World Wrestling Council as well as having stints in North American promotions, most notably two separate periods of time for WWE. First in the late 1970s until 1984, holding the now inactive Junior Heavyweight Championship under his real name. From 1987 until 1989 he worked as Conquistador Dos, working as part of a masked team known as Los Conquistadores. He has also worked extensively in his native Puerto Rico, primarily for the World Wrestling Council (WWC) where he played the masked "Super Medico I", where he teamed both with a masked Don Kent in 1984 and his son José Estrada Jr. in 1990. He worked briefly in an early IWA as commissioner of the company then with the WWC in 2007 as a wrestling manager. His son is also a retired professional wrestler, who worked primarily in Puerto Rico.