Joseph was born on July 12, 1968 in Calaca, Batangas. He studied as a Fine Arts major at the Feati University. He is part of the Saturday Group headed by Mauro Malang, where he usually frequents. Villamar dwells on themes of Mother and Child, and has been known largely for it. His works have graced the GSIS Painting contest in 2005, and his beautiful renditions made its way as calendar art for the Pediatric Incorporated, as well as in several books and publications.