Gig de Pio creates refined portraits in oil, charcoal, and pastel exploring various figurative styles. An outstanding student who garnered scholarships at the University of the Philippines, he eventually taught there, specializing in techniques, anatomy, and drawing. In the 1970s, he became a member of the Weekenders Group of painters in Cebu City.
Gig de Pio had eventually explored dynamic abstract styles - his abstract art is based on the theory of entropy, which involves the process from order to disorganization in the universe. He has exhibited in the Cultural Center of the Philippines, and in Singapore, among other locations. He is a member of the Saturday Group, and the Blumentritt Group of Artists.