Braulio Castillo, hijo reached national fame in Puerto Rico when he participated in 1984s Spanish soap opera Coralito at channel 2. There, he shared star billing with Mexican actor Salvador Pineda and with Sully Diaz. Braulio Castillo, hijo reached teen idol status across Puerto Rico after that soap opera. In 1985, he was the star of the Tanairi soap opera, alongside Von Marie.
Braulio Castillo, hijo subsequently worked on soap operas in different countries, such as Mexico, Peru and Venezuela.
In 2003, Braulio Castillo, hijo resurfaced, in the film Los Diaz de Doris, alongside co-star Cordelia Gonzalez, actress and senator Velda Gonzalez, actor Kidany Lugo and former Major League Baseball player Cirilo Cruz.